我正在使用FireMonkey并希望用户使用TFileOpenDialog提供的接口选择目录(我发现SelectDirectory接口最好过时 – 是的,即使使用sdNewUI选项).
首先,在FireMonkey应用程序中包含VCL.Dialogs单元(使用TFileOpenDialog)是不好的做法吗?
其次,这仍然只适用于Windows Vista及更高版本.这是检查兼容Windows版本的正确方法吗?
{IFDEF WIN32 or WIN64}
if Win32MajorVersion >= 6 then
// Create TOpenFileDialog with fdoPickFolders option
最佳答案 为了将来参考,使用IFileDialog创建Windows Vista及以上文件夹对话框:
uses
ShlObj, ActiveX;
...
var
FolderDialog : IFileDialog;
hr: HRESULT;
IResult: IShellItem;
FileName: PChar;
Settings: DWORD;
begin
if Win32MajorVersion >= 6 then
begin
hr := CoCreateInstance(CLSID_FileOpenDialog,
nil,
CLSCTX_INPROC_SERVER,
IFileDialog,
FolderDialog);
if hr = S_OK then
begin
FolderDialog.GetOptions(Settings);
FolderDialog.SetOptions(Settings or FOS_PICKFOLDERS);
FolderDialog.GetOptions(Settings);
FolderDialog.SetOptions(Settings or FOS_FORCEFILESYSTEM);
FolderDialog.SetOkButtonLabel(PChar('Select'));
FolderDialog.SetTitle(PChar('Select a Directory'));
hr := FolderDialog.Show(Handle);
if hr = S_OK then
begin
hr := FolderDialog.GetResult(IResult);
if hr = S_OK then
begin
IResult.GetDisplayName(SIGDN_FILESYSPATH,FileName);
ConfigPathEdit.Text := FileName;
end;
end;
end;
end;
end;