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Alternativ till TOpenDialog/TSaveDialog
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Kategori: Blandat
Inlagt: 2006-12-31
Läst: 1613
Inlagt av: Staffan Berg
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Beskrivning |
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De här funktionerna kan användas istället för TOpenDialog och TSaveDialog.
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Kod |
uses Windows;
function OpenSaveFileDialog(ParentHandle: THandle; const DefExt, Filter,
InitialDir, Title: string ; var FileName: string ; IsOpenDialog: Boolean):
Boolean;
implementation
uses ShlObj, SysUtils;
type
POpenFilenameA = ^TOpenFilenameA;
POpenFilename = POpenFilenameA;
tagOFNA = packed record
lStructSize: DWORD;
hWndOwner: HWND;
hInstance: HINST;
lpstrFilter: PAnsiChar;
lpstrCustomFilter: PAnsiChar;
nMaxCustFilter: DWORD;
nFilterIndex: DWORD;
lpstrFile: PAnsiChar;
nMaxFile: DWORD;
lpstrFileTitle: PAnsiChar;
nMaxFileTitle: DWORD;
lpstrInitialDir: PAnsiChar;
lpstrTitle: PAnsiChar;
Flags: DWORD;
nFileOffset: Word;
nFileExtension: Word;
lpstrDefExt: PAnsiChar;
lCustData: LPARAM;
lpfnHook: function(Wnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): UINT stdcall;
lpTemplateName: PAnsiChar;
end;
TOpenFilenameA = tagOFNA;
TOpenFilename = TOpenFilenameA;
function GetOpenFileName(var OpenFile: TOpenFilename): Bool; stdcall; external 'comdlg32.dll' name 'GetOpenFileNameA';
function GetSaveFileName(var OpenFile: TOpenFilename): Bool; stdcall; external 'comdlg32.dll' name 'GetSaveFileNameA';
const
OFN_DONTADDTORECENT = $02000000;
OFN_FILEMUSTEXIST = $00001000;
OFN_HIDEREADONLY = $00000004;
OFN_PATHMUSTEXIST = $00000800;
function CharReplace(const Source: string ; oldChar, newChar: Char): string ;
var
i: Integer;
begin
Result := Source;
for i := 1 to Length(Result) do
if Result[i] = oldChar then
Result[i] := newChar
end;
function OpenSaveFileDialog(ParentHandle: THandle; const DefExt, Filter, InitialDir, Title: string ; var FileName: string ; IsOpenDialog: Boolean): Boolean;
var
ofn: TOpenFileName;
szFile: array[0..MAX_PATH] of Char;
begin
Result := False;
FillChar(ofn, SizeOf(TOpenFileName), 0);
with ofn do
begin
lStructSize := SizeOf(TOpenFileName);
hwndOwner := ParentHandle;
lpstrFile := szFile;
nMaxFile := SizeOf(szFile);
if (Title <> '') then
lpstrTitle := PChar(Title);
if (InitialDir <> '') then
lpstrInitialDir := PChar(InitialDir);
StrPCopy(lpstrFile, FileName);
lpstrFilter := PChar(CharReplace(Filter, '|', #0)+#0#0);
if DefExt <> '' then
lpstrDefExt := PChar(DefExt);
end;
if IsOpenDialog then
begin
if GetOpenFileName(ofn) then
begin
Result := True;
FileName := StrPas(szFile);
end;
end
else
begin
if GetSaveFileName(ofn) then
begin
Result := True;
FileName := StrPas(szFile);
end;
end
end;
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