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/*
* tkWinDialog.c --
*
* Contains the Windows implementation of the common dialog boxes.
*
* Copyright (c) 1996-1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/

#include "tkWinInt.h"
#include "tkFileFilter.h"
#include "tkFont.h"

#include <commdlg.h> /* includes common dialog functionality */
#ifdef _MSC_VER
# pragma comment (lib, "comdlg32.lib")
#endif
#include <dlgs.h> /* includes common dialog template defines */
#include <cderr.h> /* includes the common dialog error codes */

#include <shlobj.h> /* includes SHBrowseForFolder */
#ifdef _MSC_VER
# pragma comment (lib, "shell32.lib")
#endif

/* These needed for compilation with VC++ 5.2 */
#ifndef BIF_EDITBOX
#define BIF_EDITBOX 0x10
#endif

#ifndef BIF_VALIDATE
#define BIF_VALIDATE 0x0020
#endif

#ifndef BIF_NEWDIALOGSTYLE
#define BIF_NEWDIALOGSTYLE 0x0040
#endif

#ifndef BFFM_VALIDATEFAILED
#ifdef UNICODE
#define BFFM_VALIDATEFAILED 4
#else
#define BFFM_VALIDATEFAILED 3
#endif
#endif /* BFFM_VALIDATEFAILED */

#ifndef OPENFILENAME_SIZE_VERSION_400
#define OPENFILENAME_SIZE_VERSION_400 76
#endif

/*
* The following structure is used by the new Tk_ChooseDirectoryObjCmd to pass
* data between it and its callback. Unique to Windows platform.
*/

typedef struct ChooseDirData {
   TCHAR initDir[MAX_PATH]; /* Initial folder to use */
   TCHAR retDir[MAX_PATH]; /* Returned folder to use */
   Tcl_Interp *interp;
   int mustExist; /* True if file must exist to return from
* callback */
} CHOOSEDIRDATA;

typedef struct ThreadSpecificData {
    int debugFlag; /* Flags whether we should output debugging
* information while displaying a builtin
* dialog. */
    Tcl_Interp *debugInterp; /* Interpreter to used for debugging. */
    UINT WM_LBSELCHANGED; /* Holds a registered windows event used for
* communicating between the Directory Chooser
* dialog and its hook proc. */
    HHOOK hMsgBoxHook; /* Hook proc for tk_messageBox and the */
    HICON hSmallIcon; /* icons used by a parent to be used in */
    HICON hBigIcon; /* the message box */
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;

/*
* The following structures are used by Tk_MessageBoxCmd() to parse arguments
* and return results.
*/

static const TkStateMap iconMap[] = {
    {MB_ICONERROR, "error"},
    {MB_ICONINFORMATION, "info"},
    {MB_ICONQUESTION, "question"},
    {MB_ICONWARNING, "warning"},
    {-1, NULL}
};

static const TkStateMap typeMap[] = {
    {MB_ABORTRETRYIGNORE, "abortretryignore"},
    {MB_OK, "ok"},
    {MB_OKCANCEL, "okcancel"},
    {MB_RETRYCANCEL, "retrycancel"},
    {MB_YESNO, "yesno"},
    {MB_YESNOCANCEL, "yesnocancel"},
    {-1, NULL}
};

static const TkStateMap buttonMap[] = {
    {IDABORT, "abort"},
    {IDRETRY, "retry"},
    {IDIGNORE, "ignore"},
    {IDOK, "ok"},
    {IDCANCEL, "cancel"},
    {IDNO, "no"},
    {IDYES, "yes"},
    {-1, NULL}
};

static const int buttonFlagMap[] = {
    MB_DEFBUTTON1, MB_DEFBUTTON2, MB_DEFBUTTON3, MB_DEFBUTTON4
};

static const struct {int type; int btnIds[3];} allowedTypes[] = {
    {MB_ABORTRETRYIGNORE, {IDABORT, IDRETRY, IDIGNORE}},
    {MB_OK, {IDOK, -1, -1 }},
    {MB_OKCANCEL, {IDOK, IDCANCEL, -1 }},
    {MB_RETRYCANCEL, {IDRETRY, IDCANCEL, -1 }},
    {MB_YESNO, {IDYES, IDNO, -1 }},
    {MB_YESNOCANCEL, {IDYES, IDNO, IDCANCEL}}
};

#define NUM_TYPES (sizeof(allowedTypes) / sizeof(allowedTypes[0]))

/*
* Abstract trivial differences between Win32 and Win64.
*/

#define TkWinGetHInstance(from) \
((HINSTANCE) GetWindowLongPtr((from), GWLP_HINSTANCE))
#define TkWinGetUserData(from) \
GetWindowLongPtr((from), GWLP_USERDATA)
#define TkWinSetUserData(to,what) \
SetWindowLongPtr((to), GWLP_USERDATA, (LPARAM)(what))

/*
* The value of TK_MULTI_MAX_PATH dictates how many files can be retrieved
* with tk_get*File -multiple 1. It must be allocated on the stack, so make it
* large enough but not too large. - hobbs
*
* The data is stored as <dir>\0<file1>\0<file2>\0...<fileN>\0\0. Since
* MAX_PATH == 260 on Win2K/NT, *40 is ~10Kbytes.
*/

#define TK_MULTI_MAX_PATH (MAX_PATH*40)

/*
* The following structure is used to pass information between the directory
* chooser function, Tk_ChooseDirectoryObjCmd(), and its dialog hook proc.
*/

typedef struct ChooseDir {
    Tcl_Interp *interp; /* Interp, used only if debug is turned on,
* for setting the "tk_dialog" variable. */
    int lastCtrl; /* Used by hook proc to keep track of last
* control that had input focus, so when OK is
* pressed we know whether to browse a new
* directory or return. */
    int lastIdx; /* Last item that was selected in directory
* browser listbox. */
    char path[MAX_PATH]; /* On return from choose directory dialog,
* holds the selected path. Cannot return
* selected path in ofnPtr->lpstrFile because
* the default dialog proc stores a '\0' in
* it, since, of course, no _file_ was
* selected. */
    OPENFILENAME *ofnPtr; /* pointer to the OFN structure */
} ChooseDir;

/*
* The following structure is used to pass information between GetFileName
* function and OFN dialog hook procedures. [Bug 2896501, Patch 2898255]
*/

typedef struct OFNData {
    Tcl_Interp *interp; /* Interp, used only if debug is turned on,
* for setting the "tk_dialog" variable. */
    int dynFileBufferSize; /* Dynamic filename buffer size, stored to
* avoid shrinking and expanding the buffer
* when selection changes */
    TCHAR *dynFileBuffer; /* Dynamic filename buffer */
} OFNData;

/*
* Definitions of functions used only in this file.
*/

static UINT APIENTRY ChooseDirectoryValidateProc(HWND hdlg, UINT uMsg,
LPARAM wParam, LPARAM lParam);
static UINT CALLBACK ColorDlgHookProc(HWND hDlg, UINT uMsg, WPARAM wParam,
LPARAM lParam);
static int GetFileName(ClientData clientData,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[], int isOpen);
static int MakeFilter(Tcl_Interp *interp, Tcl_Obj *valuePtr,
Tcl_DString *dsPtr, Tcl_Obj *initialPtr,
int *indexPtr);
static UINT APIENTRY OFNHookProc(HWND hdlg, UINT uMsg, WPARAM wParam,
LPARAM lParam);
static LRESULT CALLBACK MsgBoxCBTProc(int nCode, WPARAM wParam, LPARAM lParam);
static void SetTkDialog(ClientData clientData);
static const char *ConvertExternalFilename(TCHAR *filename,
Tcl_DString *dsPtr);

/*
*-------------------------------------------------------------------------
*
* EatSpuriousMessageBugFix --
*
* In the file open/save dialog, double clicking on a list item causes
* the dialog box to close, but an unwanted WM_LBUTTONUP message is sent
* to the window underneath. If the window underneath happens to be a
* windows control (eg a button) then it will be activated by accident.
*
* This problem does not occur in dialog boxes, because windows must do
* some special processing to solve the problem. (separate message
* processing functions are used to cope with keyboard navigation of
* controls.)
*
* Here is one solution. After returning, we poll the message queue for
* 1/4s looking for WM_LBUTTON up messages. If we see one it's consumed.
* If we get a WM_LBUTTONDOWN message, then we exit early, since the user
* must be doing something new. This fix only works for the current
* application, so the problem will still occur if the open dialog
* happens to be over another applications button. However this is a
* fairly rare occurrance.
*
* Results:
* None.
*
* Side effects:
* Consumes an unwanted BUTTON messages.
*
*-------------------------------------------------------------------------
*/

static void
EatSpuriousMessageBugFix(void)
{
    MSG msg;
    DWORD nTime = GetTickCount() + 250;

    while (GetTickCount() < nTime) {
if (PeekMessageA(&msg, 0, WM_LBUTTONDOWN, WM_LBUTTONDOWN, PM_NOREMOVE)){
break;
}
PeekMessageA(&msg, 0, WM_LBUTTONUP, WM_LBUTTONUP, PM_REMOVE);
    }
}

/*
*-------------------------------------------------------------------------
*
* TkWinDialogDebug --
*
* Function to turn on/off debugging support for common dialogs under
* windows. The variable "tk_debug" is set to the identifier of the
* dialog window when the modal dialog window pops up and it is safe to
* send messages to the dialog.
*
* Results:
* None.
*
* Side effects:
* This variable only makes sense if just one dialog is up at a time.
*
*-------------------------------------------------------------------------
*/

void
TkWinDialogDebug(
    int debug)
{
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    tsdPtr->debugFlag = debug;
}

/*
*-------------------------------------------------------------------------
*
* Tk_ChooseColorObjCmd --
*
* This function implements the color dialog box for the Windows
* platform. See the user documentation for details on what it does.
*
* Results:
* See user documentation.
*
* Side effects:
* A dialog window is created the first time this function is called.
* This window is not destroyed and will be reused the next time the
* application invokes the "tk_chooseColor" command.
*
*-------------------------------------------------------------------------
*/

int
Tk_ChooseColorObjCmd(
    ClientData clientData, /* Main window associated with interpreter. */
    Tcl_Interp *interp, /* Current interpreter. */
    int objc, /* Number of arguments. */
    Tcl_Obj *const objv[]) /* Argument objects. */
{
    Tk_Window tkwin = clientData, parent;
    HWND hWnd;
    int i, oldMode, winCode, result;
    CHOOSECOLOR chooseColor;
    static int inited = 0;
    static COLORREF dwCustColors[16];
    static long oldColor; /* the color selected last time */
    static const char *const optionStrings[] = {
"-initialcolor", "-parent", "-title", NULL
    };
    enum options {
COLOR_INITIAL, COLOR_PARENT, COLOR_TITLE
    };

    result = TCL_OK;
    if (inited == 0) {
/*
* dwCustColors stores the custom color which the user can modify. We
* store these colors in a static array so that the next time the
* color dialog pops up, the same set of custom colors remain in the
* dialog.
*/

for (i = 0; i < 16; i++) {
dwCustColors[i] = RGB(255-i * 10, i, i * 10);
}
oldColor = RGB(0xa0, 0xa0, 0xa0);
inited = 1;
    }

    parent = tkwin;
    chooseColor.lStructSize = sizeof(CHOOSECOLOR);
    chooseColor.hwndOwner = NULL;
    chooseColor.hInstance = NULL;
    chooseColor.rgbResult = oldColor;
    chooseColor.lpCustColors = dwCustColors;
    chooseColor.Flags = CC_RGBINIT | CC_FULLOPEN | CC_ENABLEHOOK;
    chooseColor.lCustData = (LPARAM) NULL;
    chooseColor.lpfnHook = (LPOFNHOOKPROC) ColorDlgHookProc;
    chooseColor.lpTemplateName = (LPTSTR) interp;

    for (i = 1; i < objc; i += 2) {
int index;
const char *string;
Tcl_Obj *optionPtr, *valuePtr;

optionPtr = objv[i];
valuePtr = objv[i + 1];

if (Tcl_GetIndexFromObj(interp, optionPtr, optionStrings, "option",
TCL_EXACT, &index) != TCL_OK) {
return TCL_ERROR;
}
if (i + 1 == objc) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"value for \"%s\" missing", Tcl_GetString(optionPtr)));
Tcl_SetErrorCode(interp, "TK", "COLORDIALOG", "VALUE", NULL);
return TCL_ERROR;
}

string = Tcl_GetString(valuePtr);
switch ((enum options) index) {
case COLOR_INITIAL: {
XColor *colorPtr;

colorPtr = Tk_GetColor(interp, tkwin, string);
if (colorPtr == NULL) {
return TCL_ERROR;
}
chooseColor.rgbResult = RGB(colorPtr->red / 0x100,
colorPtr->green / 0x100, colorPtr->blue / 0x100);
break;
}
case COLOR_PARENT:
parent = Tk_NameToWindow(interp, string, tkwin);
if (parent == NULL) {
return TCL_ERROR;
}
break;
case COLOR_TITLE:
chooseColor.lCustData = (LPARAM) string;
break;
}
    }

    Tk_MakeWindowExist(parent);
    chooseColor.hwndOwner = NULL;
    hWnd = Tk_GetHWND(Tk_WindowId(parent));
    chooseColor.hwndOwner = hWnd;

    oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
    winCode = ChooseColor(&chooseColor);
    (void) Tcl_SetServiceMode(oldMode);

    /*
* Ensure that hWnd is enabled, because it can happen that we have updated
* the wrapper of the parent, which causes us to leave this child disabled
* (Windows loses sync).
*/

    EnableWindow(hWnd, 1);

    /*
* Clear the interp result since anything may have happened during the
* modal loop.
*/

    Tcl_ResetResult(interp);

    /*
* 3. Process the result of the dialog
*/

    if (winCode) {
/*
* User has selected a color
*/

Tcl_SetObjResult(interp, Tcl_ObjPrintf("#%02x%02x%02x",
GetRValue(chooseColor.rgbResult),
GetGValue(chooseColor.rgbResult),
GetBValue(chooseColor.rgbResult)));
oldColor = chooseColor.rgbResult;
result = TCL_OK;
    }

    return result;
}

/*
*-------------------------------------------------------------------------
*
* ColorDlgHookProc --
*
* Provides special handling of messages for the Color common dialog box.
* Used to set the title when the dialog first appears.
*
* Results:
* The return value is 0 if the default dialog box function should handle
* the message, non-zero otherwise.
*
* Side effects:
* Changes the title of the dialog window.
*
*----------------------------------------------------------------------
*/

static UINT CALLBACK
ColorDlgHookProc(
    HWND hDlg, /* Handle to the color dialog. */
    UINT uMsg, /* Type of message. */
    WPARAM wParam, /* First message parameter. */
    LPARAM lParam) /* Second message parameter. */
{
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
    const char *title;
    CHOOSECOLOR *ccPtr;

    if (WM_INITDIALOG == uMsg) {

/*
* Set the title string of the dialog.
*/

ccPtr = (CHOOSECOLOR *) lParam;
title = (const char *) ccPtr->lCustData;

if ((title != NULL) && (title[0] != '\0')) {
Tcl_DString ds;

SetWindowText(hDlg, Tcl_WinUtfToTChar(title,-1,&ds));
Tcl_DStringFree(&ds);
}
if (tsdPtr->debugFlag) {
tsdPtr->debugInterp = (Tcl_Interp *) ccPtr->lpTemplateName;
Tcl_DoWhenIdle(SetTkDialog, hDlg);
}
return TRUE;
    }
    return FALSE;
}

/*
*----------------------------------------------------------------------
*
* Tk_GetOpenFileCmd --
*
* This function implements the "open file" dialog box for the Windows
* platform. See the user documentation for details on what it does.
*
* Results:
* See user documentation.
*
* Side effects:
* A dialog window is created the first this function is called.
*
*----------------------------------------------------------------------
*/

int
Tk_GetOpenFileObjCmd(
    ClientData clientData, /* Main window associated with interpreter. */
    Tcl_Interp *interp, /* Current interpreter. */
    int objc, /* Number of arguments. */
    Tcl_Obj *const objv[]) /* Argument objects. */
{
    return GetFileName(clientData, interp, objc, objv, 1);
}

/*
*----------------------------------------------------------------------
*
* Tk_GetSaveFileCmd --
*
* Same as Tk_GetOpenFileCmd but opens a "save file" dialog box
* instead
*
* Results:
* Same as Tk_GetOpenFileCmd.
*
* Side effects:
* Same as Tk_GetOpenFileCmd.
*
*----------------------------------------------------------------------
*/

int
Tk_GetSaveFileObjCmd(
    ClientData clientData, /* Main window associated with interpreter. */
    Tcl_Interp *interp, /* Current interpreter. */
    int objc, /* Number of arguments. */
    Tcl_Obj *const objv[]) /* Argument objects. */
{
    return GetFileName(clientData, interp, objc, objv, 0);
}

/*
*----------------------------------------------------------------------
*
* GetFileName --
*
* Calls GetOpenFileName() or GetSaveFileName().
*
* Results:
* See user documentation.
*
* Side effects:
* See user documentation.
*
*----------------------------------------------------------------------
*/

static int
GetFileName(
    ClientData clientData, /* Main window associated with interpreter. */
    Tcl_Interp *interp, /* Current interpreter. */
    int objc, /* Number of arguments. */
    Tcl_Obj *const objv[], /* Argument objects. */
    int open) /* 1 to call GetOpenFileName(), 0 to call
* GetSaveFileName(). */
{
    OPENFILENAME ofn;
    TCHAR file[TK_MULTI_MAX_PATH];
    OFNData ofnData;
    int cdlgerr;
    int filterIndex = 0, result = TCL_ERROR, winCode, oldMode, i, multi = 0;
    int confirmOverwrite = 1;
    const char *extension = NULL, *title = NULL;
    Tk_Window tkwin = clientData;
    HWND hWnd;
    Tcl_Obj *filterObj = NULL, *initialTypeObj = NULL, *typeVariableObj = NULL;
    Tcl_DString utfFilterString, utfDirString, ds;
    Tcl_DString extString, filterString, dirString, titleString;
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
    static const char *const saveOptionStrings[] = {
"-confirmoverwrite", "-defaultextension", "-filetypes", "-initialdir",
"-initialfile", "", "-parent", "-title", "-typevariable", NULL
    };
    static const char *const openOptionStrings[] = {
"", "-defaultextension", "-filetypes", "-initialdir", "-initialfile",
"-multiple", "-parent", "-title", "-typevariable", NULL
    };
    enum options {
FILE_CONFIRMOW, FILE_DEFAULT, FILE_TYPES, FILE_INITDIR, FILE_INITFILE,
FILE_MULTIPLE, FILE_PARENT, FILE_TITLE, FILE_TYPEVARIABLE
    };

    file[0] = '\0';
    ZeroMemory(&ofnData, sizeof(OFNData));
    Tcl_DStringInit(&utfFilterString);
    Tcl_DStringInit(&utfDirString);

    /*
* Parse the arguments.
*/

    for (i = 1; i < objc; i += 2) {
int index;
const char *string;
Tcl_Obj *valuePtr = objv[i + 1];

if (Tcl_GetIndexFromObj(interp, objv[i],
open ? openOptionStrings : saveOptionStrings,
"option", 0, &index) != TCL_OK) {
goto end;
}

if (i + 1 == objc) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"value for \"%s\" missing", Tcl_GetString(objv[i])));
Tcl_SetErrorCode(interp, "TK", "FILEDIALOG", "VALUE", NULL);
goto end;
}

string = Tcl_GetString(valuePtr);
switch ((enum options) index) {
case FILE_DEFAULT:
if (string[0] == '.') {
string++;
}
extension = string;
break;
case FILE_TYPES:
filterObj = valuePtr;
break;
case FILE_INITDIR:
Tcl_DStringFree(&utfDirString);
if (Tcl_TranslateFileName(interp, string,
&utfDirString) == NULL) {
goto end;
}
break;
case FILE_INITFILE:
if (Tcl_TranslateFileName(interp, string, &ds) == NULL) {
goto end;
}
Tcl_UtfToExternal(NULL, TkWinGetUnicodeEncoding(),
Tcl_DStringValue(&ds), Tcl_DStringLength(&ds), 0, NULL,
(char *) file, sizeof(file), NULL, NULL, NULL);
Tcl_DStringFree(&ds);
break;
case FILE_PARENT:
tkwin = Tk_NameToWindow(interp, string, tkwin);
if (tkwin == NULL) {
goto end;
}
break;
case FILE_TITLE:
title = string;
break;
case FILE_TYPEVARIABLE:
typeVariableObj = valuePtr;
initialTypeObj = Tcl_ObjGetVar2(interp, typeVariableObj, NULL,
TCL_GLOBAL_ONLY);
break;
case FILE_MULTIPLE:
if (Tcl_GetBooleanFromObj(interp, valuePtr, &multi) != TCL_OK) {
return TCL_ERROR;
}
break;
case FILE_CONFIRMOW:
if (Tcl_GetBooleanFromObj(interp, valuePtr,
&confirmOverwrite) != TCL_OK) {
return TCL_ERROR;
}
break;
}
    }

    if (MakeFilter(interp, filterObj, &utfFilterString, initialTypeObj,
&filterIndex) != TCL_OK) {
goto end;
    }

    Tk_MakeWindowExist(tkwin);
    hWnd = Tk_GetHWND(Tk_WindowId(tkwin));

    ZeroMemory(&ofn, sizeof(OPENFILENAME));
    if (LOBYTE(LOWORD(GetVersion())) < 5) {
ofn.lStructSize = OPENFILENAME_SIZE_VERSION_400;
    } else {
ofn.lStructSize = sizeof(OPENFILENAME);
    }
    ofn.hwndOwner = hWnd;
    ofn.hInstance = TkWinGetHInstance(ofn.hwndOwner);
    ofn.lpstrFile = file;
    ofn.nMaxFile = TK_MULTI_MAX_PATH;
    ofn.Flags = OFN_HIDEREADONLY | OFN_PATHMUSTEXIST | OFN_NOCHANGEDIR
| OFN_EXPLORER | OFN_ENABLEHOOK| OFN_ENABLESIZING;
    ofn.lpfnHook = (LPOFNHOOKPROC) OFNHookProc;
    ofn.lCustData = (LPARAM) &ofnData;

    if (open != 0) {
ofn.Flags |= OFN_FILEMUSTEXIST;
    } else if (confirmOverwrite) {
ofn.Flags |= OFN_OVERWRITEPROMPT;
    }
    if (tsdPtr->debugFlag != 0) {
ofnData.interp = interp;
    }
    if (multi != 0) {
ofn.Flags |= OFN_ALLOWMULTISELECT;

/*
* Starting buffer size. The buffer will be expanded by the OFN dialog
* procedure when necessary
*/

ofnData.dynFileBufferSize = 512;
ofnData.dynFileBuffer = ckalloc(512 * sizeof(TCHAR));
    }

    if (extension != NULL) {
Tcl_WinUtfToTChar(extension, -1, &extString);
ofn.lpstrDefExt = (TCHAR *) Tcl_DStringValue(&extString);
    }

    Tcl_WinUtfToTChar(Tcl_DStringValue(&utfFilterString),
Tcl_DStringLength(&utfFilterString), &filterString);
    ofn.lpstrFilter = (TCHAR *) Tcl_DStringValue(&filterString);
    ofn.nFilterIndex = filterIndex;

    if (Tcl_DStringValue(&utfDirString)[0] != '\0') {
Tcl_WinUtfToTChar(Tcl_DStringValue(&utfDirString),
Tcl_DStringLength(&utfDirString), &dirString);
    } else {
/*
* NT 5.0 changed the meaning of lpstrInitialDir, so we have to ensure
* that we set the [pwd] if the user didn't specify anything else.
*/

Tcl_DString cwd;

Tcl_DStringFree(&utfDirString);
if ((Tcl_GetCwd(interp, &utfDirString) == NULL) ||
(Tcl_TranslateFileName(interp,
Tcl_DStringValue(&utfDirString), &cwd) == NULL)) {
Tcl_ResetResult(interp);
} else {
Tcl_WinUtfToTChar(Tcl_DStringValue(&cwd),
Tcl_DStringLength(&cwd), &dirString);
}
Tcl_DStringFree(&cwd);
    }
    ofn.lpstrInitialDir = (TCHAR *) Tcl_DStringValue(&dirString);

    if (title != NULL) {
Tcl_WinUtfToTChar(title, -1, &titleString);
ofn.lpstrTitle = (TCHAR *) Tcl_DStringValue(&titleString);
    }

    /*
* Popup the dialog.
*/

    oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
    if (open != 0) {
winCode = GetOpenFileName(&ofn);
    } else {
winCode = GetSaveFileName(&ofn);
    }
    Tcl_SetServiceMode(oldMode);
    EatSpuriousMessageBugFix();

    /*
* Ensure that hWnd is enabled, because it can happen that we have updated
* the wrapper of the parent, which causes us to leave this child disabled
* (Windows loses sync).
*/

    EnableWindow(hWnd, 1);

    /*
* Clear the interp result since anything may have happened during the
* modal loop.
*/

    Tcl_ResetResult(interp);

    /*
* Process the results.
*
* Use the CommDlgExtendedError() function to retrieve the error code.
* This function can return one of about two dozen codes; most of these
* indicate some sort of gross system failure (insufficient memory, bad
* window handles, etc.). Most of the error codes will be ignored; as we
* find we want more specific error messages for particular errors, we can
* extend the code as needed.
*/

    cdlgerr = CommDlgExtendedError();

    /*
* We now allow FNERR_BUFFERTOOSMALL when multiselection is enabled. The
* filename buffer has been dynamically allocated by the OFN dialog
* procedure to accomodate all selected files.
*/

    if ((winCode != 0)
|| ((cdlgerr == FNERR_BUFFERTOOSMALL)
&& (ofn.Flags & OFN_ALLOWMULTISELECT))) {
int gotFilename = 0; /* Flag for tracking whether we have any
* filename at all. For details, see
* http://stackoverflow.com/q/9227859/301832
*/

if (ofn.Flags & OFN_ALLOWMULTISELECT) {
/*
* The result in dynFileBuffer contains many items, separated by
* NUL characters. It is terminated with two nulls in a row. The
* first element is the directory path.
*/

TCHAR *files = ofnData.dynFileBuffer;
Tcl_Obj *returnList = Tcl_NewObj();
int count = 0;

/*
* Get directory.
*/

ConvertExternalFilename(files, &ds);

while (*files != '\0') {
while (*files != '\0') {
files++;
}
files++;
if (*files != '\0') {
Tcl_Obj *fullnameObj;
Tcl_DString filenameBuf;

count++;
ConvertExternalFilename(files, &filenameBuf);

fullnameObj = Tcl_NewStringObj(Tcl_DStringValue(&ds),
Tcl_DStringLength(&ds));
Tcl_AppendToObj(fullnameObj, "/", -1);
Tcl_AppendToObj(fullnameObj, Tcl_DStringValue(&filenameBuf),
Tcl_DStringLength(&filenameBuf));
gotFilename = 1;
Tcl_DStringFree(&filenameBuf);
Tcl_ListObjAppendElement(NULL, returnList, fullnameObj);
}
}

if (count == 0) {
/*
* Only one file was returned.
*/

Tcl_ListObjAppendElement(NULL, returnList,
Tcl_NewStringObj(Tcl_DStringValue(&ds),
Tcl_DStringLength(&ds)));
gotFilename |= (Tcl_DStringLength(&ds) > 0);
}
Tcl_SetObjResult(interp, returnList);
Tcl_DStringFree(&ds);
} else {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
ConvertExternalFilename(ofn.lpstrFile, &ds), -1));
gotFilename = (Tcl_DStringLength(&ds) > 0);
Tcl_DStringFree(&ds);
}
result = TCL_OK;
if ((ofn.nFilterIndex > 0) && gotFilename && typeVariableObj
&& filterObj) {
int listObjc, count;
Tcl_Obj **listObjv = NULL;
Tcl_Obj **typeInfo = NULL;

if (Tcl_ListObjGetElements(interp, filterObj,
&listObjc, &listObjv) != TCL_OK) {
result = TCL_ERROR;
} else if (Tcl_ListObjGetElements(interp,
listObjv[ofn.nFilterIndex - 1], &count,
&typeInfo) != TCL_OK) {
result = TCL_ERROR;
} else if (Tcl_ObjSetVar2(interp, typeVariableObj, NULL,
typeInfo[0], TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
result = TCL_ERROR;
}
}
    } else if (cdlgerr == FNERR_INVALIDFILENAME) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"invalid filename \"%s\"",
ConvertExternalFilename(ofn.lpstrFile, &ds)));
Tcl_SetErrorCode(interp, "TK", "FILEDIALOG", "INVALID_FILENAME",
NULL);
Tcl_DStringFree(&ds);
    } else {
result = TCL_OK;
    }

    if (ofn.lpstrTitle != NULL) {
Tcl_DStringFree(&titleString);
    }
    if (ofn.lpstrInitialDir != NULL) {
Tcl_DStringFree(&dirString);
    }
    Tcl_DStringFree(&filterString);
    if (ofn.lpstrDefExt != NULL) {
Tcl_DStringFree(&extString);
    }

  end:
    Tcl_DStringFree(&utfDirString);
    Tcl_DStringFree(&utfFilterString);
    if (ofnData.dynFileBuffer != NULL) {
ckfree(ofnData.dynFileBuffer);
ofnData.dynFileBuffer = NULL;
    }

    return result;
}

/*
*-------------------------------------------------------------------------
*
* OFNHookProc --
*
* Dialog box hook function. This is used to sets the "tk_dialog"
* variable for test/debugging when the dialog is ready to receive
* messages. When multiple file selection is enabled this function
* is used to process the list of names.
*
* Results:
* Returns 0 to allow default processing of messages to occur.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------------
*/

static UINT APIENTRY
OFNHookProc(
    HWND hdlg, /* Handle to child dialog window. */
    UINT uMsg, /* Message identifier */
    WPARAM wParam, /* Message parameter */
    LPARAM lParam) /* Message parameter */
{
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
    OPENFILENAME *ofnPtr;
    OFNData *ofnData;

    if (uMsg == WM_INITDIALOG) {
TkWinSetUserData(hdlg, lParam);
    } else if (uMsg == WM_NOTIFY) {
OFNOTIFY *notifyPtr = (OFNOTIFY *) lParam;

/*
* This is weird... or not. The CDN_FILEOK is NOT sent when the
* selection exceeds declared buffer size (the nMaxFile member of the
* OPENFILENAME struct passed to GetOpenFileName function). So, we
* have to rely on the most recent CDN_SELCHANGE then. Unfortunately
* this means, that gathering the selected filenames happens twice
* when they fit into the declared buffer. Luckily, it's not frequent
* operation so it should not incur any noticeable delay. See [Bug
* 2987995]
*/

if (notifyPtr->hdr.code == CDN_FILEOK ||
notifyPtr->hdr.code == CDN_SELCHANGE) {
int dirsize, selsize;
TCHAR *buffer;
int buffersize;

/*
* Change of selection. Unscramble the unholy mess that's in the
* selection buffer, resizing it if necessary.
*/

ofnPtr = notifyPtr->lpOFN;
ofnData = (OFNData *) ofnPtr->lCustData;
buffer = ofnData->dynFileBuffer;
hdlg = GetParent(hdlg);

selsize = SendMessage(hdlg, CDM_GETSPEC, 0, 0);
dirsize = SendMessage(hdlg, CDM_GETFOLDERPATH, 0, 0);
buffersize = (selsize + dirsize + 1);

/*
* Just empty the buffer if dirsize indicates an error. [Bug
* 3071836]
*/

if ((selsize > 1) && (dirsize > 0)) {
if (ofnData->dynFileBufferSize < buffersize) {
buffer = ckrealloc(buffer, buffersize * sizeof(TCHAR));
ofnData->dynFileBufferSize = buffersize;
ofnData->dynFileBuffer = buffer;
}

SendMessage(hdlg, CDM_GETFOLDERPATH, dirsize, (LPARAM) buffer);
buffer += dirsize;

SendMessage(hdlg, CDM_GETSPEC, selsize, (LPARAM) buffer);

/*
* If there are multiple files, delete the quotes and change
* every second quote to NULL terminator
*/

if (buffer[0] == '"') {
BOOL findquote = TRUE;
TCHAR *tmp = buffer;

while (*buffer != '\0') {
if (findquote) {
if (*buffer == '"') {
findquote = FALSE;
}
buffer++;
} else {
if (*buffer == '"') {
findquote = TRUE;
*buffer = '\0';
}
*tmp++ = *buffer++;
}
}
*tmp = '\0'; /* Second NULL terminator. */
} else {
buffer[selsize] = '\0'; /* Second NULL terminator. */

/*
* Replace directory terminating NULL with a backslash.
*/

buffer--;
*buffer = '\\';
}
} else {
/*
* Nothing is selected, so just empty the string.
*/

if (buffer != NULL) {
*buffer = '\0';
}
}
}
    } else if (uMsg == WM_WINDOWPOSCHANGED) {
/*
* This message is delivered at the right time to enable Tk to set the
* debug information. Unhooks itself so it won't set the debug
* information every time it gets a WM_WINDOWPOSCHANGED message.
*/

ofnPtr = (OPENFILENAME *) TkWinGetUserData(hdlg);
if (ofnPtr != NULL) {
ofnData = (OFNData *) ofnPtr->lCustData;
if (ofnData->interp != NULL) {
hdlg = GetParent(hdlg);
tsdPtr->debugInterp = ofnData->interp;
Tcl_DoWhenIdle(SetTkDialog, hdlg);
}
TkWinSetUserData(hdlg, NULL);
}
    }
    return 0;
}

/*
*----------------------------------------------------------------------
*
* MakeFilter --
*
* Allocate a buffer to store the filters in a format understood by
* Windows.
*
* Results:
* A standard TCL return value.
*
* Side effects:
* ofnPtr->lpstrFilter is modified.
*
*----------------------------------------------------------------------
*/

static int
MakeFilter(
    Tcl_Interp *interp, /* Current interpreter. */
    Tcl_Obj *valuePtr, /* Value of the -filetypes option */
    Tcl_DString *dsPtr, /* Filled with windows filter string. */
    Tcl_Obj *initialPtr, /* Initial type name */
    int *indexPtr) /* Index of initial type in filter string */
{
    char *filterStr;
    char *p;
    const char *initial = NULL;
    int pass;
    int ix = 0; /* index counter */
    FileFilterList flist;
    FileFilter *filterPtr;

    if (initialPtr) {
initial = Tcl_GetStringFromObj(initialPtr, NULL);
    }
    TkInitFileFilters(&flist);
    if (TkGetFileFilters(interp, &flist, valuePtr, 1) != TCL_OK) {
return TCL_ERROR;
    }

    if (flist.filters == NULL) {
/*
* Use "All Files (*.*) as the default filter if none is specified
*/
const char *defaultFilter = "All Files (*.*)";

p = filterStr = ckalloc(30);

strcpy(p, defaultFilter);
p+= strlen(defaultFilter);

*p++ = '\0';
*p++ = '*';
*p++ = '.';
*p++ = '*';
*p++ = '\0';
*p++ = '\0';
*p = '\0';

    } else {
int len;

if (valuePtr == NULL) {
len = 0;
} else {
(void) Tcl_GetStringFromObj(valuePtr, &len);
}

/*
* We format the filetype into a string understood by Windows: {"Text
* Documents" {.doc .txt} {TEXT}} becomes "Text Documents
* (*.doc,*.txt)\0*.doc;*.txt\0"
*
* See the Windows OPENFILENAME manual page for details on the filter
* string format.
*/

/*
* Since we may only add asterisks (*) to the filter, we need at most
* twice the size of the string to format the filter
*/

filterStr = ckalloc(len * 3);

for (filterPtr = flist.filters, p = filterStr; filterPtr;
filterPtr = filterPtr->next) {
const char *sep;
FileFilterClause *clausePtr;

/*
* Check initial index for match, set *indexPtr. Filter index is 1
* based so increment first
*/

ix++;
if (indexPtr && initial
&& (strcmp(initial, filterPtr->name) == 0)) {
*indexPtr = ix;
}

/*
* First, put in the name of the file type.
*/

strcpy(p, filterPtr->name);
p+= strlen(filterPtr->name);
*p++ = ' ';
*p++ = '(';

for (pass = 1; pass <= 2; pass++) {
/*
* In the first pass, we format the extensions in the name
* field. In the second pass, we format the extensions in the
* filter pattern field
*/

sep = "";
for (clausePtr=filterPtr->clauses;clausePtr;
clausePtr=clausePtr->next) {
GlobPattern *globPtr;

for (globPtr = clausePtr->patterns; globPtr;
globPtr = globPtr->next) {
strcpy(p, sep);
p += strlen(sep);
strcpy(p, globPtr->pattern);
p += strlen(globPtr->pattern);

if (pass == 1) {
sep = ",";
} else {
sep = ";";
}
}
}
if (pass == 1) {
*p ++ = ')';
}
*p++ = '\0';
}
}

/*
* Windows requires the filter string to be ended by two NULL
* characters.
*/

*p++ = '\0';
*p = '\0';
    }

    Tcl_DStringAppend(dsPtr, filterStr, (int) (p - filterStr));
    ckfree(filterStr);

    TkFreeFileFilters(&flist);
    return TCL_OK;
}

/*
*----------------------------------------------------------------------
*
* Tk_ChooseDirectoryObjCmd --
*
* This function implements the "tk_chooseDirectory" dialog box for the
* Windows platform. See the user documentation for details on what it
* does. Uses the newer SHBrowseForFolder explorer type interface.
*
* Results:
* See user documentation.
*
* Side effects:
* A modal dialog window is created. Tcl_SetServiceMode() is called to
* allow background events to be processed
*
*----------------------------------------------------------------------
*
* The function tk_chooseDirectory pops up a dialog box for the user to select
* a directory. The following option-value pairs are possible as command line
* arguments:
*
* -initialdir dirname
*
* Specifies that the directories in directory should be displayed when the
* dialog pops up. If this parameter is not specified, then the directories in
* the current working directory are displayed. If the parameter specifies a
* relative path, the return value will convert the relative path to an
* absolute path. This option may not always work on the Macintosh. This is
* not a bug. Rather, the General Controls control panel on the Mac allows the
* end user to override the application default directory.
*
* -parent window
*
* Makes window the logical parent of the dialog. The dialog is displayed on
* top of its parent window.
*
* -title titleString
*
* Specifies a string to display as the title of the dialog box. If this
* option is not specified, then a default title will be displayed.
*
* -mustexist boolean
*
* Specifies whether the user may specify non-existant directories. If this
* parameter is true, then the user may only select directories that already
* exist. The default value is false.
*
* New Behaviour:
*
* - If mustexist = 0 and a user entered folder does not exist, a prompt will
* pop-up asking if the user wants another chance to change it. The old
* dialog just returned the bogus entry. On mustexist = 1, the entries MUST
* exist before exiting the box with OK.
*
* Bugs:
*
* - If valid abs directory name is entered into the entry box and Enter
* pressed, the box will close returning the name. This is inconsistent when
* entering relative names or names with forward slashes, which are
* invalidated then corrected in the callback. After correction, the box is
* held open to allow further modification by the user.
*
* - Not sure how to implement localization of message prompts.
*
* - -title is really -message.
* ToDo:
* - Fix bugs.
* - test to see what platforms this really works on. May require v4.71 of
* shell32.dll everywhere (what is standard?).
*
*----------------------------------------------------------------------
*/

int
Tk_ChooseDirectoryObjCmd(
    ClientData clientData, /* Main window associated with interpreter. */
    Tcl_Interp *interp, /* Current interpreter. */
    int objc, /* Number of arguments. */
    Tcl_Obj *const objv[]) /* Argument objects. */
{
    TCHAR path[MAX_PATH];
    int oldMode, result = TCL_ERROR, i;
    LPCITEMIDLIST pidl; /* Returned by browser */
    BROWSEINFO bInfo; /* Used by browser */
    CHOOSEDIRDATA cdCBData; /* Structure to pass back and forth */
    LPMALLOC pMalloc; /* Used by shell */
    Tk_Window tkwin = clientData;
    HWND hWnd;
    const char *utfTitle = NULL;/* Title for window */
    TCHAR saveDir[MAX_PATH];
    Tcl_DString titleString; /* Title */
    Tcl_DString initDirString; /* Initial directory */
    Tcl_DString tempString; /* temporary */
    Tcl_Obj *objPtr;
    static const char *const optionStrings[] = {
"-initialdir", "-mustexist", "-parent", "-title", NULL
    };
    enum options {
DIR_INITIAL, DIR_EXIST, DIR_PARENT, FILE_TITLE
    };

    /*
* Initialize
*/

    path[0] = '\0';
    ZeroMemory(&cdCBData, sizeof(CHOOSEDIRDATA));
    cdCBData.interp = interp;

    /*
* Process the command line options
*/

    for (i = 1; i < objc; i += 2) {
int index;
const char *string;
const TCHAR *uniStr;
Tcl_Obj *optionPtr, *valuePtr;

optionPtr = objv[i];
valuePtr = objv[i + 1];

if (Tcl_GetIndexFromObj(interp, optionPtr, optionStrings, "option", 0,
&index) != TCL_OK) {
goto cleanup;
}
if (i + 1 == objc) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"value for \"%s\" missing", Tcl_GetString(optionPtr)));
Tcl_SetErrorCode(interp, "TK", "DIRDIALOG", "VALUE", NULL);
goto cleanup;
}

string = Tcl_GetString(valuePtr);
switch ((enum options) index) {
case DIR_INITIAL:
if (Tcl_TranslateFileName(interp,string,&initDirString) == NULL) {
goto cleanup;
}
Tcl_WinUtfToTChar(Tcl_DStringValue(&initDirString), -1,
&tempString);
uniStr = (TCHAR *) Tcl_DStringValue(&tempString);

/*
* Convert possible relative path to full path to keep dialog
* happy.
*/

GetFullPathName(uniStr, MAX_PATH, saveDir, NULL);
_tcsncpy(cdCBData.initDir, saveDir, MAX_PATH);
Tcl_DStringFree(&initDirString);
Tcl_DStringFree(&tempString);
break;
case DIR_EXIST:
if (Tcl_GetBooleanFromObj(interp, valuePtr,
&cdCBData.mustExist) != TCL_OK) {
goto cleanup;
}
break;
case DIR_PARENT:
tkwin = Tk_NameToWindow(interp, string, tkwin);
if (tkwin == NULL) {
goto cleanup;
}
break;
case FILE_TITLE:
utfTitle = string;
break;
}
    }

    /*
* Get ready to call the browser
*/

    Tk_MakeWindowExist(tkwin);
    hWnd = Tk_GetHWND(Tk_WindowId(tkwin));

    /*
* Setup the parameters used by SHBrowseForFolder
*/

    bInfo.hwndOwner = hWnd;
    bInfo.pszDisplayName = path;
    bInfo.pidlRoot = NULL;
    if (_tcslen(cdCBData.initDir) == 0) {
GetCurrentDirectory(MAX_PATH, cdCBData.initDir);
    }
    bInfo.lParam = (LPARAM) &cdCBData;

    if (utfTitle != NULL) {
Tcl_WinUtfToTChar(utfTitle, -1, &titleString);
bInfo.lpszTitle = (LPTSTR) Tcl_DStringValue(&titleString);
    } else {
bInfo.lpszTitle = TEXT("Please choose a directory, then select OK.");
    }

    /*
* Set flags to add edit box, status text line and use the new ui. Allow
* override with magic variable (ignore errors in retrieval). See
* http://msdn.microsoft.com/en-us/library/bb773205(VS.85).aspx for
* possible flag values.
*/

    bInfo.ulFlags = BIF_EDITBOX | BIF_STATUSTEXT | BIF_RETURNFSANCESTORS
| BIF_VALIDATE | BIF_NEWDIALOGSTYLE;
    objPtr = Tcl_GetVar2Ex(interp, "::tk::winChooseDirFlags", NULL,
TCL_GLOBAL_ONLY);
    if (objPtr != NULL) {
int flags;
Tcl_GetIntFromObj(NULL, objPtr, &flags);
bInfo.ulFlags = flags;
    }

    /*
* Callback to handle events
*/

    bInfo.lpfn = (BFFCALLBACK) ChooseDirectoryValidateProc;

    /*
* Display dialog in background and process result. We look to give the
* user a chance to change their mind on an invalid folder if mustexist is
* 0.
*/

    oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
    GetCurrentDirectory(MAX_PATH, saveDir);
    if (SHGetMalloc(&pMalloc) == NOERROR) {
pidl = SHBrowseForFolder(&bInfo);

/*
* This is a fix for Windows 2000, which seems to modify the folder
* name buffer even when the dialog is canceled (in this case the
* buffer contains garbage). See [Bug #3002230]
*/

path[0] = '\0';

/*
* Null for cancel button or invalid dir, otherwise valid.
*/

if (pidl != NULL) {
if (!SHGetPathFromIDList(pidl, path)) {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"error: not a file system folder", -1));
Tcl_SetErrorCode(interp, "TK", "DIRDIALOG", "PSEUDO", NULL);
}
pMalloc->lpVtbl->Free(pMalloc, (void *) pidl);
} else if (_tcslen(cdCBData.retDir) > 0) {
_tcscpy(path, cdCBData.retDir);
}
pMalloc->lpVtbl->Release(pMalloc);
    }
    SetCurrentDirectory(saveDir);
    Tcl_SetServiceMode(oldMode);

    /*
* Ensure that hWnd is enabled, because it can happen that we have updated
* the wrapper of the parent, which causes us to leave this child disabled
* (Windows loses sync).
*/

    EnableWindow(hWnd, 1);

    /*
* Change the pathname to the Tcl "normalized" pathname, where back
* slashes are used instead of forward slashes
*/

    Tcl_ResetResult(interp);
    if (*path) {
Tcl_DString ds;

Tcl_SetObjResult(interp, Tcl_NewStringObj(
ConvertExternalFilename(path, &ds), -1));
Tcl_DStringFree(&ds);
    }

    result = TCL_OK;

    if (utfTitle != NULL) {
Tcl_DStringFree(&titleString);
    }

  cleanup:
    return result;
}

/*
*----------------------------------------------------------------------
*
* ChooseDirectoryValidateProc --
*
* Hook function called by the explorer ChooseDirectory dialog when
* events occur. It is used to validate the text entry the user may have
* entered.
*
* Results:
* Returns 0 to allow default processing of message, or 1 to tell default
* dialog function not to close.
*
*----------------------------------------------------------------------
*/

static UINT APIENTRY
ChooseDirectoryValidateProc(
    HWND hwnd,
    UINT message,
    LPARAM lParam,
    LPARAM lpData)
{
    TCHAR selDir[MAX_PATH];
    CHOOSEDIRDATA *chooseDirSharedData = (CHOOSEDIRDATA *) lpData;
    Tcl_DString tempString;
    Tcl_DString initDirString;
    TCHAR string[MAX_PATH];
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (tsdPtr->debugFlag) {
tsdPtr->debugInterp = (Tcl_Interp *) chooseDirSharedData->interp;
Tcl_DoWhenIdle(SetTkDialog, hwnd);
    }
    chooseDirSharedData->retDir[0] = '\0';
    switch (message) {
    case BFFM_VALIDATEFAILED:
/*
* First save and check to see if it is a valid path name, if so then
* make that path the one shown in the window. Otherwise, it failed
* the check and should be treated as such. Use
* Set/GetCurrentDirectoryA which allows relative path names and names
* with forward slashes. Use Tcl_TranslateFileName to make sure names
* like ~ are converted correctly.
*/

Tcl_WinTCharToUtf((TCHAR *) lParam, -1, &initDirString);
if (Tcl_TranslateFileName(chooseDirSharedData->interp,
Tcl_DStringValue(&initDirString), &tempString) == NULL) {
/*
* Should we expose the error (in the interp result) to the user
* at this point?
*/

chooseDirSharedData->retDir[0] = '\0';
return 1;
}
Tcl_DStringFree(&initDirString);
Tcl_WinUtfToTChar(Tcl_DStringValue(&tempString), -1, &initDirString);
Tcl_DStringFree(&tempString);
_tcsncpy(string, (TCHAR *) Tcl_DStringValue(&initDirString),
MAX_PATH);
Tcl_DStringFree(&initDirString);

if (SetCurrentDirectory(string) == 0) {

/*
* Get the full path name to the user entry, at this point it does
* not exist so see if it is supposed to. Otherwise just return
* it.
*/

GetFullPathName(string, MAX_PATH,
chooseDirSharedData->retDir, NULL);
if (chooseDirSharedData->mustExist) {
/*
* User HAS to select a valid directory.
*/

wsprintf(selDir, TEXT("Directory '%s' does not exist,\n")
TEXT("please select or enter an existing directory."),
chooseDirSharedData->retDir);
MessageBox(NULL, selDir, NULL, MB_ICONEXCLAMATION|MB_OK);
chooseDirSharedData->retDir[0] = '\0';
return 1;
}
} else {
/*
* Changed to new folder OK, return immediatly with the current
* directory in utfRetDir.
*/

GetCurrentDirectory(MAX_PATH, chooseDirSharedData->retDir);
return 0;
}
return 0;

    case BFFM_SELCHANGED:
/*
* Set the status window to the currently selected path and enable the
* OK button if a file system folder, otherwise disable the OK button
* for things like server names. Perhaps a new switch
* -enablenonfolders can be used to allow non folders to be selected.
*
* Not called when user changes edit box directly.
*/

if (SHGetPathFromIDList((LPITEMIDLIST) lParam, selDir)) {
SendMessage(hwnd, BFFM_SETSTATUSTEXT, 0, (LPARAM) selDir);
// enable the OK button
SendMessage(hwnd, BFFM_ENABLEOK, 0, (LPARAM) 1);
} else {
// disable the OK button
SendMessage(hwnd, BFFM_ENABLEOK, 0, (LPARAM) 0);
}
UpdateWindow(hwnd);
return 1;

    case BFFM_INITIALIZED: {
/*
* Directory browser intializing - tell it where to start from, user
* specified parameter.
*/

TCHAR *initDir = chooseDirSharedData->initDir;

SetCurrentDirectory(initDir);

if (*initDir == '\\') {
/*
* BFFM_SETSELECTION only understands UNC paths as pidls, so
* convert path to pidl using IShellFolder interface.
*/

LPMALLOC pMalloc;
LPSHELLFOLDER psfFolder;

if (SUCCEEDED(SHGetMalloc(&pMalloc))) {
if (SUCCEEDED(SHGetDesktopFolder(&psfFolder))) {
LPITEMIDLIST pidlMain;
ULONG ulCount, ulAttr;

if (SUCCEEDED(psfFolder->lpVtbl->ParseDisplayName(
psfFolder, hwnd, NULL, (TCHAR *)
initDir, &ulCount,&pidlMain,&ulAttr))
&& (pidlMain != NULL)) {
SendMessage(hwnd, BFFM_SETSELECTION, FALSE,
(LPARAM) pidlMain);
pMalloc->lpVtbl->Free(pMalloc, pidlMain);
}
psfFolder->lpVtbl->Release(psfFolder);
}
pMalloc->lpVtbl->Release(pMalloc);
}
} else {
SendMessage(hwnd, BFFM_SETSELECTION, TRUE, (LPARAM) initDir);
}
SendMessage(hwnd, BFFM_ENABLEOK, 0, (LPARAM) 1);
break;
    }

    }
    return 0;
}

/*
*----------------------------------------------------------------------
*
* Tk_MessageBoxObjCmd --
*
* This function implements the MessageBox window for the Windows
* platform. See the user documentation for details on what it does.
*
* Results:
* See user documentation.
*
* Side effects:
* None. The MessageBox window will be destroy before this function
* returns.
*
*----------------------------------------------------------------------
*/

int
Tk_MessageBoxObjCmd(
    ClientData clientData, /* Main window associated with interpreter. */
    Tcl_Interp *interp, /* Current interpreter. */
    int objc, /* Number of arguments. */
    Tcl_Obj *const objv[]) /* Argument objects. */
{
    Tk_Window tkwin = clientData, parent;
    HWND hWnd;
    Tcl_Obj *messageObj, *titleObj, *detailObj, *tmpObj;
    int defaultBtn, icon, type;
    int i, oldMode, winCode;
    UINT flags;
    static const char *const optionStrings[] = {
"-default", "-detail", "-icon", "-message",
"-parent", "-title", "-type", NULL
    };
    enum options {
MSG_DEFAULT, MSG_DETAIL, MSG_ICON, MSG_MESSAGE,
MSG_PARENT, MSG_TITLE, MSG_TYPE
    };
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    defaultBtn = -1;
    detailObj = NULL;
    icon = MB_ICONINFORMATION;
    messageObj = NULL;
    parent = tkwin;
    titleObj = NULL;
    type = MB_OK;

    for (i = 1; i < objc; i += 2) {
int index;
Tcl_Obj *optionPtr, *valuePtr;

optionPtr = objv[i];
valuePtr = objv[i + 1];

if (Tcl_GetIndexFromObj(interp, optionPtr, optionStrings, "option",
TCL_EXACT, &index) != TCL_OK) {
return TCL_ERROR;
}
if (i + 1 == objc) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"value for \"%s\" missing", Tcl_GetString(optionPtr)));
Tcl_SetErrorCode(interp, "TK", "MSGBOX", "VALUE", NULL);
return TCL_ERROR;
}

switch ((enum options) index) {
case MSG_DEFAULT:
defaultBtn = TkFindStateNumObj(interp, optionPtr, buttonMap,
valuePtr);
if (defaultBtn < 0) {
return TCL_ERROR;
}
break;

case MSG_DETAIL:
detailObj = valuePtr;
break;

case MSG_ICON:
icon = TkFindStateNumObj(interp, optionPtr, iconMap, valuePtr);
if (icon < 0) {
return TCL_ERROR;
}
break;

case MSG_MESSAGE:
messageObj = valuePtr;
break;

case MSG_PARENT:
parent = Tk_NameToWindow(interp, Tcl_GetString(valuePtr), tkwin);
if (parent == NULL) {
return TCL_ERROR;
}
break;

case MSG_TITLE:
titleObj = valuePtr;
break;

case MSG_TYPE:
type = TkFindStateNumObj(interp, optionPtr, typeMap, valuePtr);
if (type < 0) {
return TCL_ERROR;
}
break;
}
    }

    while (!Tk_IsTopLevel(parent)) {
parent = Tk_Parent(parent);
    }
    Tk_MakeWindowExist(parent);
    hWnd = Tk_GetHWND(Tk_WindowId(parent));

    flags = 0;
    if (defaultBtn >= 0) {
int defaultBtnIdx = -1;

for (i = 0; i < (int) NUM_TYPES; i++) {
if (type == allowedTypes[i].type) {
int j;

for (j = 0; j < 3; j++) {
if (allowedTypes[i].btnIds[j] == defaultBtn) {
defaultBtnIdx = j;
break;
}
}
if (defaultBtnIdx < 0) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"invalid default button \"%s\"",
TkFindStateString(buttonMap, defaultBtn)));
Tcl_SetErrorCode(interp, "TK", "MSGBOX", "DEFAULT", NULL);
return TCL_ERROR;
}
break;
}
}
flags = buttonFlagMap[defaultBtnIdx];
    }

    flags |= icon | type | MB_TASKMODAL | MB_SETFOREGROUND;

    tmpObj = messageObj ? Tcl_DuplicateObj(messageObj)
: Tcl_NewUnicodeObj(NULL, 0);
    Tcl_IncrRefCount(tmpObj);
    if (detailObj) {
Tcl_AppendUnicodeToObj(tmpObj, L"\n\n", 2);
Tcl_AppendObjToObj(tmpObj, detailObj);
    }

    oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);

    /*
* MessageBoxW exists for all platforms. Use it to allow unicode error
* message to be displayed correctly where possible by the OS.
*
* In order to have the parent window icon reflected in a MessageBox, we
* have to create a hook that will trigger when the MessageBox is being
* created.
*/

    tsdPtr->hSmallIcon = TkWinGetIcon(parent, ICON_SMALL);
    tsdPtr->hBigIcon = TkWinGetIcon(parent, ICON_BIG);
    tsdPtr->hMsgBoxHook = SetWindowsHookEx(WH_CBT, MsgBoxCBTProc, NULL,
GetCurrentThreadId());
    winCode = MessageBox(hWnd, Tcl_GetUnicode(tmpObj),
titleObj ? Tcl_GetUnicode(titleObj) : L"", flags);
    UnhookWindowsHookEx(tsdPtr->hMsgBoxHook);
    (void) Tcl_SetServiceMode(oldMode);

    /*
* Ensure that hWnd is enabled, because it can happen that we have updated
* the wrapper of the parent, which causes us to leave this child disabled
* (Windows loses sync).
*/

    EnableWindow(hWnd, 1);

    Tcl_DecrRefCount(tmpObj);
    Tcl_SetObjResult(interp, Tcl_NewStringObj(
TkFindStateString(buttonMap, winCode), -1));
    return TCL_OK;
}

static LRESULT CALLBACK
MsgBoxCBTProc(
    int nCode,
    WPARAM wParam,
    LPARAM lParam)
{
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (nCode == HCBT_CREATEWND) {
/*
* Window owned by our task is being created. Since the hook is
* installed just before the MessageBox call and removed after the
* MessageBox call, the window being created is either the message box
* or one of its controls. Check that the class is WC_DIALOG to ensure
* that it's the one we want.
*/

LPCBT_CREATEWND lpcbtcreate = (LPCBT_CREATEWND) lParam;

if (WC_DIALOG == lpcbtcreate->lpcs->lpszClass) {
HWND hwnd = (HWND) wParam;

SendMessage(hwnd, WM_SETICON, ICON_SMALL,
(LPARAM) tsdPtr->hSmallIcon);
SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM) tsdPtr->hBigIcon);
}
    }

    /*
* Call the next hook proc, if there is one
*/

    return CallNextHookEx(tsdPtr->hMsgBoxHook, nCode, wParam, lParam);
}

/*
* ----------------------------------------------------------------------
*
* SetTkDialog --
*
* Records the HWND for a native dialog in the 'tk_dialog' variable so
* that the test-suite can operate on the correct dialog window. Use of
* this is enabled when a test program calls TkWinDialogDebug by calling
* the test command 'tkwinevent debug 1'.
*
* ----------------------------------------------------------------------
*/

static void
SetTkDialog(
    ClientData clientData)
{
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
    char buf[32];

    sprintf(buf, "0x%p", (HWND) clientData);
    Tcl_SetVar(tsdPtr->debugInterp, "tk_dialog", buf, TCL_GLOBAL_ONLY);
}

/*
* Factored out a common pattern in use in this file.
*/

static const char *
ConvertExternalFilename(
    TCHAR *filename,
    Tcl_DString *dsPtr)
{
    char *p;

    Tcl_WinTCharToUtf(filename, -1, dsPtr);
    for (p = Tcl_DStringValue(dsPtr); *p != '\0'; p++) {
/*
* Change the pathname to the Tcl "normalized" pathname, where back
* slashes are used instead of forward slashes
*/

if (*p == '\\') {
*p = '/';
}
    }
    return Tcl_DStringValue(dsPtr);
}

/*
* ----------------------------------------------------------------------
*
* GetFontObj --
*
* Convert a windows LOGFONT into a Tk font description.
*
* Result:
* A list containing a Tk font description.
*
* ----------------------------------------------------------------------
*/

static Tcl_Obj *
GetFontObj(
    HDC hdc,
    LOGFONT *plf)
{
    Tcl_DString ds;
    Tcl_Obj *resObj;
    int pt = 0;

    resObj = Tcl_NewListObj(0, NULL);
    Tcl_WinTCharToUtf(plf->lfFaceName, -1, &ds);
    Tcl_ListObjAppendElement(NULL, resObj,
Tcl_NewStringObj(Tcl_DStringValue(&ds), -1));
    Tcl_DStringFree(&ds);
    pt = -MulDiv(plf->lfHeight, 72, GetDeviceCaps(hdc, LOGPIXELSY));
    Tcl_ListObjAppendElement(NULL, resObj, Tcl_NewIntObj(pt));
    if (plf->lfWeight >= 700) {
Tcl_ListObjAppendElement(NULL, resObj, Tcl_NewStringObj("bold", -1));
    }
    if (plf->lfItalic) {
Tcl_ListObjAppendElement(NULL, resObj,
Tcl_NewStringObj("italic", -1));
    }
    if (plf->lfUnderline) {
Tcl_ListObjAppendElement(NULL, resObj,
Tcl_NewStringObj("underline", -1));
    }
    if (plf->lfStrikeOut) {
Tcl_ListObjAppendElement(NULL, resObj,
Tcl_NewStringObj("overstrike", -1));
    }
    return resObj;
}

static void
ApplyLogfont(
    Tcl_Interp *interp,
    Tcl_Obj *cmdObj,
    HDC hdc,
    LOGFONT *logfontPtr)
{
    int objc;
    Tcl_Obj **objv, **tmpv;

    Tcl_ListObjGetElements(NULL, cmdObj, &objc, &objv);
    tmpv = ckalloc(sizeof(Tcl_Obj *) * (objc + 2));
    memcpy(tmpv, objv, sizeof(Tcl_Obj *) * objc);
    tmpv[objc] = GetFontObj(hdc, logfontPtr);
    TkBackgroundEvalObjv(interp, objc+1, tmpv, TCL_EVAL_GLOBAL);
    ckfree(tmpv);
}

/*
* ----------------------------------------------------------------------
*
* HookProc --
*
* Font selection hook. If the user selects Apply on the dialog, we call
* the applyProc script with the currently selected font as arguments.
*
* ----------------------------------------------------------------------
*/

typedef struct HookData {
    Tcl_Interp *interp;
    Tcl_Obj *titleObj;
    Tcl_Obj *cmdObj;
    Tcl_Obj *parentObj;
    Tcl_Obj *fontObj;
    HWND hwnd;
    Tk_Window parent;
} HookData;

static UINT_PTR CALLBACK
HookProc(
    HWND hwndDlg,
    UINT msg,
    WPARAM wParam,
    LPARAM lParam)
{
    CHOOSEFONT *pcf = (CHOOSEFONT *) lParam;
    HWND hwndCtrl;
    static HookData *phd = NULL;
    ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (WM_INITDIALOG == msg && lParam != 0) {
phd = (HookData *) pcf->lCustData;
phd->hwnd = hwndDlg;
if (tsdPtr->debugFlag) {
tsdPtr->debugInterp = phd->interp;
Tcl_DoWhenIdle(SetTkDialog, hwndDlg);
}
if (phd->titleObj != NULL) {
Tcl_DString title;

Tcl_WinUtfToTChar(Tcl_GetString(phd->titleObj), -1, &title);
if (Tcl_DStringLength(&title) > 0) {
SetWindowText(hwndDlg, (LPCTSTR) Tcl_DStringValue(&title));
}
Tcl_DStringFree(&title);
}

/*
* Disable the colour combobox (0x473) and its label (0x443).
*/

hwndCtrl = GetDlgItem(hwndDlg, 0x443);
if (IsWindow(hwndCtrl)) {
EnableWindow(hwndCtrl, FALSE);
}
hwndCtrl = GetDlgItem(hwndDlg, 0x473);
if (IsWindow(hwndCtrl)) {
EnableWindow(hwndCtrl, FALSE);
}
TkSendVirtualEvent(phd->parent, "TkFontchooserVisibility");
return 1; /* we handled the message */
    }

    if (WM_DESTROY == msg) {
phd->hwnd = NULL;
TkSendVirtualEvent(phd->parent, "TkFontchooserVisibility");
return 0;
    }

    /*
* Handle apply button by calling the provided command script as a
* background evaluation (ie: errors dont come back here).
*/

    if (WM_COMMAND == msg && LOWORD(wParam) == 1026) {
LOGFONT lf = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0}};
HDC hdc = GetDC(hwndDlg);

SendMessage(hwndDlg, WM_CHOOSEFONT_GETLOGFONT, 0, (LPARAM) &lf);
if (phd && phd->cmdObj) {
ApplyLogfont(phd->interp, phd->cmdObj, hdc, &lf);
}
if (phd && phd->parent) {
TkSendVirtualEvent(phd->parent, "TkFontchooserFontChanged");
}
return 1;
    }
    return 0; /* pass on for default processing */
}

/*
* Helper for the FontchooserConfigure command to return the current value of
* any of the options (which may be NULL in the structure)
*/

enum FontchooserOption {
    FontchooserParent, FontchooserTitle, FontchooserFont, FontchooserCmd,
    FontchooserVisible
};

static Tcl_Obj *
FontchooserCget(
    HookData *hdPtr,
    int optionIndex)
{
    Tcl_Obj *resObj = NULL;

    switch(optionIndex) {
    case FontchooserParent:
if (hdPtr->parentObj) {
resObj = hdPtr->parentObj;
} else {
resObj = Tcl_NewStringObj(".", 1);
}
break;
    case FontchooserTitle:
if (hdPtr->titleObj) {
resObj = hdPtr->titleObj;
} else {
resObj = Tcl_NewStringObj("", 0);
}
break;
    case FontchooserFont:
if (hdPtr->fontObj) {
resObj = hdPtr->fontObj;
} else {
resObj = Tcl_NewStringObj("", 0);
}
break;
    case FontchooserCmd:
if (hdPtr->cmdObj) {
resObj = hdPtr->cmdObj;
} else {
resObj = Tcl_NewStringObj("", 0);
}
break;
    case FontchooserVisible:
resObj = Tcl_NewBooleanObj(hdPtr->hwnd && IsWindow(hdPtr->hwnd));
break;
    default:
resObj = Tcl_NewStringObj("", 0);
    }
    return resObj;
}

/*
* ----------------------------------------------------------------------
*
* FontchooserConfigureCmd --
*
* Implementation of the 'tk fontchooser configure' ensemble command. See
* the user documentation for what it does.
*
* Results:
* See the user documentation.
*
* Side effects:
* Per-interp data structure may be modified
*
* ----------------------------------------------------------------------
*/

static int
FontchooserConfigureCmd(
    ClientData clientData, /* Main window */
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const objv[])
{
    Tk_Window tkwin = clientData;
    HookData *hdPtr = NULL;
    int i, r = TCL_OK;
    static const char *const optionStrings[] = {
"-parent", "-title", "-font", "-command", "-visible", NULL
    };

    hdPtr = Tcl_GetAssocData(interp, "::tk::fontchooser", NULL);

    /*
* With no arguments we return all the options in a dict.
*/

    if (objc == 1) {
Tcl_Obj *keyObj, *valueObj;
Tcl_Obj *dictObj = Tcl_NewDictObj();

for (i = 0; r == TCL_OK && optionStrings[i] != NULL; ++i) {
keyObj = Tcl_NewStringObj(optionStrings[i], -1);
valueObj = FontchooserCget(hdPtr, i);
r = Tcl_DictObjPut(interp, dictObj, keyObj, valueObj);
}
if (r == TCL_OK) {
Tcl_SetObjResult(interp, dictObj);
}
return r;
    }

    for (i = 1; i < objc; i += 2) {
int optionIndex, len;

if (Tcl_GetIndexFromObj(interp, objv[i], optionStrings,
"option", 0, &optionIndex) != TCL_OK) {
return TCL_ERROR;
}
if (objc == 2) {
/*
* If one option and no arg - return the current value.
*/

Tcl_SetObjResult(interp, FontchooserCget(hdPtr, optionIndex));
return TCL_OK;
}
if (i + 1 == objc) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"value for \"%s\" missing", Tcl_GetString(objv[i])));
Tcl_SetErrorCode(interp, "TK", "FONTDIALOG", "VALUE", NULL);
return TCL_ERROR;
}
switch (optionIndex) {
case FontchooserVisible: {
static const char *msg = "cannot change read-only option "
"\"-visible\": use the show or hide command";

Tcl_SetObjResult(interp, Tcl_NewStringObj(msg, -1));
Tcl_SetErrorCode(interp, "TK", "FONTDIALOG", "READONLY", NULL);
return TCL_ERROR;
}
case FontchooserParent: {
Tk_Window parent = Tk_NameToWindow(interp,
Tcl_GetString(objv[i+1]), tkwin);

if (parent == None) {
return TCL_ERROR;
}
if (hdPtr->parentObj) {
Tcl_DecrRefCount(hdPtr->parentObj);
}
hdPtr->parentObj = objv[i+1];
if (Tcl_IsShared(hdPtr->parentObj)) {
hdPtr->parentObj = Tcl_DuplicateObj(hdPtr->parentObj);
}
Tcl_IncrRefCount(hdPtr->parentObj);
break;
}
case FontchooserTitle:
if (hdPtr->titleObj) {
Tcl_DecrRefCount(hdPtr->titleObj);
}
hdPtr->titleObj = objv[i+1];
if (Tcl_IsShared(hdPtr->titleObj)) {
hdPtr->titleObj = Tcl_DuplicateObj(hdPtr->titleObj);
}
Tcl_IncrRefCount(hdPtr->titleObj);
break;
case FontchooserFont:
if (hdPtr->fontObj) {
Tcl_DecrRefCount(hdPtr->fontObj);
}
Tcl_GetStringFromObj(objv[i+1], &len);
if (len) {
hdPtr->fontObj = objv[i+1];
if (Tcl_IsShared(hdPtr->fontObj)) {
hdPtr->fontObj = Tcl_DuplicateObj(hdPtr->fontObj);
}
Tcl_IncrRefCount(hdPtr->fontObj);
} else {
hdPtr->fontObj = NULL;
}
break;
case FontchooserCmd:
if (hdPtr->cmdObj) {
Tcl_DecrRefCount(hdPtr->cmdObj);
}
Tcl_GetStringFromObj(objv[i+1], &len);
if (len) {
hdPtr->cmdObj = objv[i+1];
if (Tcl_IsShared(hdPtr->cmdObj)) {
hdPtr->cmdObj = Tcl_DuplicateObj(hdPtr->cmdObj);
}
Tcl_IncrRefCount(hdPtr->cmdObj);
} else {
hdPtr->cmdObj = NULL;
}
break;
}
    }
    return TCL_OK;
}

/*
* ----------------------------------------------------------------------
*
* FontchooserShowCmd --
*
* Implements the 'tk fontchooser show' ensemble command. The per-interp
* configuration data for the dialog is held in an interp associated
* structure.
*
* Calls the Win32 FontChooser API which provides a modal dialog. See
* HookProc where we make a few changes to the dialog and set some
* additional state.
*
* ----------------------------------------------------------------------
*/

static int
FontchooserShowCmd(
    ClientData clientData, /* Main window */
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const objv[])
{
    Tcl_DString ds;
    Tk_Window tkwin = clientData, parent;
    CHOOSEFONT cf;
    LOGFONT lf;
    HDC hdc;
    HookData *hdPtr;
    int r = TCL_OK, oldMode = 0;

    hdPtr = Tcl_GetAssocData(interp, "::tk::fontchooser", NULL);

    parent = tkwin;
    if (hdPtr->parentObj) {
parent = Tk_NameToWindow(interp, Tcl_GetString(hdPtr->parentObj),
tkwin);
if (parent == None) {
return TCL_ERROR;
}
    }

    Tk_MakeWindowExist(parent);

    ZeroMemory(&cf, sizeof(CHOOSEFONT));
    ZeroMemory(&lf, sizeof(LOGFONT));
    lf.lfCharSet = DEFAULT_CHARSET;
    cf.lStructSize = sizeof(CHOOSEFONT);
    cf.hwndOwner = Tk_GetHWND(Tk_WindowId(parent));
    cf.lpLogFont = &lf;
    cf.nFontType = SCREEN_FONTTYPE;
    cf.Flags = CF_SCREENFONTS | CF_EFFECTS | CF_ENABLEHOOK;
    cf.rgbColors = RGB(0,0,0);
    cf.lpfnHook = HookProc;
    cf.lCustData = (INT_PTR) hdPtr;
    hdPtr->interp = interp;
    hdPtr->parent = parent;
    hdc = GetDC(cf.hwndOwner);

    if (hdPtr->fontObj != NULL) {
TkFont *fontPtr;
Tk_Font f = Tk_AllocFontFromObj(interp, tkwin, hdPtr->fontObj);

if (f == NULL) {
return TCL_ERROR;
}
fontPtr = (TkFont *) f;
cf.Flags |= CF_INITTOLOGFONTSTRUCT;
Tcl_WinUtfToTChar(fontPtr->fa.family, -1, &ds);
_tcsncpy(lf.lfFaceName, (TCHAR *)Tcl_DStringValue(&ds),
LF_FACESIZE-1);
Tcl_DStringFree(&ds);
lf.lfFaceName[LF_FACESIZE-1] = 0;
lf.lfHeight = -MulDiv(TkFontGetPoints(tkwin, fontPtr->fa.size),
GetDeviceCaps(hdc, LOGPIXELSY), 72);
if (fontPtr->fa.weight == TK_FW_BOLD) {
lf.lfWeight = FW_BOLD;
}
if (fontPtr->fa.slant != TK_FS_ROMAN) {
lf.lfItalic = TRUE;
}
if (fontPtr->fa.underline) {
lf.lfUnderline = TRUE;
}
if (fontPtr->fa.overstrike) {
lf.lfStrikeOut = TRUE;
}
Tk_FreeFont(f);
    }

    if (TCL_OK == r && hdPtr->cmdObj != NULL) {
int len = 0;

r = Tcl_ListObjLength(interp, hdPtr->cmdObj, &len);
if (len > 0) {
cf.Flags |= CF_APPLY;
}
    }

    if (TCL_OK == r) {
oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
if (ChooseFont(&cf)) {
if (hdPtr->cmdObj) {
ApplyLogfont(hdPtr->interp, hdPtr->cmdObj, hdc, &lf);
}
if (hdPtr->parent) {
TkSendVirtualEvent(hdPtr->parent, "TkFontchooserFontChanged");
}
}
Tcl_SetServiceMode(oldMode);
EnableWindow(cf.hwndOwner, 1);
    }

    ReleaseDC(cf.hwndOwner, hdc);
    return r;
}

/*
* ----------------------------------------------------------------------
*
* FontchooserHideCmd --
*
* Implementation of the 'tk fontchooser hide' ensemble. See the user
* documentation for details.
* As the Win32 FontChooser function is always modal all we do here is
* destroy the dialog
*
* ----------------------------------------------------------------------
*/

static int
FontchooserHideCmd(
    ClientData clientData, /* Main window */
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const objv[])
{
    HookData *hdPtr = Tcl_GetAssocData(interp, "::tk::fontchooser", NULL);

    if (hdPtr->hwnd && IsWindow(hdPtr->hwnd)) {
EndDialog(hdPtr->hwnd, 0);
    }
    return TCL_OK;
}

/*
* ----------------------------------------------------------------------
*
* DeleteHookData --
*
* Clean up the font chooser configuration data when the interp is
* destroyed.
*
* ----------------------------------------------------------------------
*/

static void
DeleteHookData(ClientData clientData, Tcl_Interp *interp)
{
    HookData *hdPtr = clientData;

    if (hdPtr->parentObj) {
Tcl_DecrRefCount(hdPtr->parentObj);
    }
    if (hdPtr->fontObj) {
Tcl_DecrRefCount(hdPtr->fontObj);
    }
    if (hdPtr->titleObj) {
Tcl_DecrRefCount(hdPtr->titleObj);
    }
    if (hdPtr->cmdObj) {
Tcl_DecrRefCount(hdPtr->cmdObj);
    }
    ckfree(hdPtr);
}

/*
* ----------------------------------------------------------------------
*
* TkInitFontchooser --
*
* Associate the font chooser configuration data with the Tcl
* interpreter. There is one font chooser per interp.
*
* ----------------------------------------------------------------------
*/

MODULE_SCOPE const TkEnsemble tkFontchooserEnsemble[];
const TkEnsemble tkFontchooserEnsemble[] = {
    { "configure", FontchooserConfigureCmd, NULL },
    { "show", FontchooserShowCmd, NULL },
    { "hide", FontchooserHideCmd, NULL },
    { NULL, NULL, NULL }
};

int
TkInitFontchooser(Tcl_Interp *interp, ClientData clientData)
{
    HookData *hdPtr = ckalloc(sizeof(HookData));

    memset(hdPtr, 0, sizeof(HookData));
    Tcl_SetAssocData(interp, "::tk::fontchooser", DeleteHookData, hdPtr);
    return TCL_OK;
}

/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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