/
BrowseFolder.pas
89 lines (76 loc) · 1.94 KB
/
BrowseFolder.pas
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unit BrowseFolder;
interface
uses
Windows, SysUtils, Classes, ShellAPI, ShlObj;
type
TBrowseFolder = class(TComponent)
private
{ Private declarations }
protected
{ Protected declarations }
public
{ Public declarations }
StartDir: string;
ResultDir: string;
TitleName: string;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function Execute(phwnd: HWND): boolean;
published
{ Published declarations }
end;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('Samples', [TBrowseFolder]);
end;
{ TBrowseFolder }
constructor TBrowseFolder.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
end;
destructor TBrowseFolder.Destroy;
begin
inherited Destroy;
end;
function BrowseCallbackProc(hwnd: HWND; uMsg: UINT; lParam: integer;
lpData: integer): integer; stdcall;
begin
// get message
if uMsg=BFFM_INITIALIZED then
// send message to cheange dir
SendMessage(hwnd,BFFM_SETSELECTION,1,lpData);
result:=0;
end;
function TBrowseFolder.Execute(phwnd: HWND): boolean;
var
pp: string;
lpItemID : PItemIDList;
BrowseInfo : TBrowseInfo;
DisplayName : array[0..MAX_PATH] of char;
TempPath : array[0..MAX_PATH] of char;
begin
result:=false;
FillChar(BrowseInfo, sizeof(TBrowseInfo), #0);
// init
BrowseInfo.hwndOwner := phwnd;
BrowseInfo.pszDisplayName := @DisplayName;
BrowseInfo.lpszTitle := PChar(TitleName);
BrowseInfo.ulFlags := BIF_RETURNONLYFSDIRS + BIF_NEWDIALOGSTYLE;
BrowseInfo.lpfn:=@BrowseCallbackProc;
pp:=StartDir;
lstrcpy(TempPath,@pp[1]);
BrowseInfo.lParam:=integer(@TempPath);
// show window
lpItemID := SHBrowseForFolder(BrowseInfo);
if lpItemId <> nil then
begin
SHGetPathFromIDList(lpItemID, TempPath);
SetLength(ResultDir,lstrlen(TempPath));
lstrcpy(@ResultDir[1],TempPath);
GlobalFreePtr(lpItemID);
result:=true;
end;
end;
end.