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LangDLL.c
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LangDLL.c
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#include <windows.h>
#include "resource.h"
#include <nsis/nsis_tchar.h>
// JF> updated usage
// call like this:
// LangDLL:LangDialog "Window Title" "Window subtext" <number of languages|"A">[C][F] language_text language_id [codepage] ... [font_size font_face]
// ex:
// LangDLL:LangDialog "Language Selection" "Choose a language" "2" French 1036 English 1033
// or (the F after the 2 means we're supplying font information)
// LangDLL:LangDialog "Language Selection" "Choose a language" "2F" French 1036 English 1033 12 Garamond
//
// Unicode support added by Jim Park -- 07/27/2007
#include <nsis/pluginapi.h> // nsis plugin
#define NSIS_DECLSPEC_DLLEXPORT __declspec(dllexport) // BUGBUG: Compiler specific
HINSTANCE g_hInstance;
HWND g_hwndParent;
TCHAR temp[1024];
TCHAR g_wndtitle[1024], g_wndtext[1024];
int dofont;
int docp;
int langs_num;
int visible_langs_num;
struct lang {
TCHAR *name;
TCHAR *id;
UINT cp;
} *langs;
#ifndef UNICODE
static UINT AllowLang(struct lang*pL)
{
UINT acp = GetACP(), lcp = pL->cp, allow = lcp == acp;
/*
** Workaround for bug #1185:
** English and German can be displayed in cp1250
*/
if (acp == 1250 && lcp == 1252)
{
const UINT lid = myatou(pL->id);
if (lid == 1033 // English
|| lid == 1031 // German
)
++allow;
}
return allow;
}
#endif
INT_PTR CALLBACK DialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
INT_PTR i;
int size;
TCHAR *selected_language = NULL;
static HFONT font;
switch (uMsg) {
case WM_INITDIALOG:
// add languages
for (i = visible_langs_num - 1; i >= 0; i--) {
INT_PTR cbi;
cbi = SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, CB_ADDSTRING, 0, (LPARAM) langs[i].name);
SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, CB_SETITEMDATA, cbi, (LPARAM) langs[i].id);
// remember selected language
if (!lstrcmp(langs[i].id, getuservariable(INST_LANG))) {
selected_language = langs[i].name;
}
}
// select the current language
if (selected_language)
SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, CB_SELECTSTRING, (WPARAM) -1, (LPARAM) selected_language);
else
SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, CB_SETCURSEL, 0, 0);
// set texts
SetDlgItemText(hwndDlg, IDC_TEXT, g_wndtext);
SetWindowText(hwndDlg, g_wndtitle);
SendDlgItemMessage(hwndDlg, IDC_APPICON, STM_SETICON, (LPARAM)LoadIcon(GetModuleHandle(0),MAKEINTRESOURCE(103)), 0);
// set font
if (dofont && !popstring(temp)) {
size = myatou(temp);
if (!popstring(temp)) {
LOGFONT f = {0,};
if (lstrcmp(temp, _T("MS Shell Dlg"))) {
f.lfHeight = -MulDiv(size, GetDeviceCaps(GetDC(hwndDlg), LOGPIXELSY), 72);
lstrcpy(f.lfFaceName, temp);
font = CreateFontIndirect(&f);
SendMessage(hwndDlg, WM_SETFONT, (WPARAM)font, 1);
SendDlgItemMessage(hwndDlg, IDOK, WM_SETFONT, (WPARAM)font, 1);
SendDlgItemMessage(hwndDlg, IDCANCEL, WM_SETFONT, (WPARAM)font, 1);
SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, WM_SETFONT, (WPARAM)font, 1);
SendDlgItemMessage(hwndDlg, IDC_TEXT, WM_SETFONT, (WPARAM)font, 1);
}
}
}
// show window
ShowWindow(hwndDlg, SW_SHOW);
break;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
// push result on the stack
i = SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, CB_GETCURSEL, 0, 0);
i = SendDlgItemMessage(hwndDlg, IDC_LANGUAGE, CB_GETITEMDATA, i, 0);
if (i != CB_ERR && i) {
pushstring((TCHAR *) i);
} else {
// ?!
pushstring(_T("cancel"));
}
// end dialog
EndDialog(hwndDlg, 0);
break;
case IDCANCEL:
// push "cancel" on the stack
pushstring(_T("cancel"));
// end dialog
EndDialog(hwndDlg, 0);
break;
}
break;
case WM_DESTROY:
// clean up
if (font) DeleteObject(font);
break;
default:
return FALSE; // message not processed
}
return TRUE; // message processed
}
void NSIS_DECLSPEC_DLLEXPORT LangDialog(HWND hwndParent, int string_size,
TCHAR *variables, stack_t **stacktop)
{
g_hwndParent=hwndParent;
EXDLL_INIT();
{
int i;
int doauto = 0;
BOOL pop_empty_string = FALSE;
// get texts
if (popstring(g_wndtitle)) return;
if (popstring(g_wndtext)) return;
// get flags
if (popstring(temp)) return;
// parse flags
{
TCHAR *p=temp;
while (*p)
{
if (*p == _T('A')) doauto=1; // parse auto count flag
if (*p == _T('F')) dofont=1; // parse font flag
if (*p == _T('C')) docp=1; // parse codepage flag
p++;
}
}
if (doauto) {
// automatic language count
stack_t *th;
langs_num=0;
th=(*g_stacktop);
while (th && th->text[0]) {
langs_num++;
th = th->next;
}
if (!th) return;
if (docp)
langs_num /= 3;
else
langs_num /= 2;
pop_empty_string = TRUE;
} else {
// use counts languages
langs_num = myatou(temp);
}
// zero languages?
if (!langs_num) return;
// initialize visible languages count
visible_langs_num = 0;
// allocate language struct
langs = (struct lang *)GlobalAlloc(GPTR, langs_num*sizeof(struct lang));
if (!langs) return;
// fill language struct
for (i = 0; i < langs_num; i++) {
if (popstring(temp)) { visible_langs_num = 0; break; }
langs[visible_langs_num].name = (TCHAR*) GlobalAlloc(GPTR, (lstrlen(temp)+1)*sizeof(TCHAR));
if (!langs[visible_langs_num].name) { visible_langs_num = 0; break; }
lstrcpy(langs[visible_langs_num].name, temp);
if (popstring(temp)) { visible_langs_num = 0; break; }
langs[visible_langs_num].id = (TCHAR*) GlobalAlloc(GPTR, (lstrlen(temp)+1)*sizeof(TCHAR));
if (!langs[visible_langs_num].id) { visible_langs_num = 0; break; }
lstrcpy(langs[visible_langs_num].id, temp);
if (docp)
{
if (popstring(temp)) { visible_langs_num = 0; break; }
langs[visible_langs_num].cp = myatou(temp);
}
// If Unicode, show everything.
#ifdef UNICODE
visible_langs_num++;
#else
if (!docp || AllowLang(&langs[visible_langs_num]) || langs[visible_langs_num].cp == 0)
{
visible_langs_num++;
}
else
{
GlobalFree(langs[visible_langs_num].name);
GlobalFree(langs[visible_langs_num].id);
}
#endif
}
// pop the empty string to keep the stack clean
if (pop_empty_string) {
if (popstring(temp)) {
visible_langs_num = 0;
}
}
// start dialog
if (visible_langs_num > 1)
{
DialogBox(g_hInstance, MAKEINTRESOURCE(IDD_DIALOG), 0, DialogProc);
}
else if (visible_langs_num == 0)
{
pushstring(_T(""));
}
else
{
pushstring(langs[0].id);
}
// free structs
for (i = 0; i < visible_langs_num; i++) {
if (langs[i].name) GlobalFree(langs[i].name);
if (langs[i].id) GlobalFree(langs[i].id);
}
GlobalFree(langs);
}
}
BOOL WINAPI DllMain(HINSTANCE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
{
g_hInstance=hInst;
return TRUE;
}