直接用SelectDirectory函数不就的了，有这样的控件，但SelectDirectory函数功能和他一样啊 UnitFileCtrlCategorydialog and message routinesfunction SelectDirectory(const Caption: string; const Root: WideString; out Directory: string): Boolean; overload; function SelectDirectory(var Directory: string; Options: TSelectDirOpts; HelpCtx: Longint): Boolean; overload;DescriptionCall SelectDirectory to let the user enter a directory name. Use the first syntax to display the Windows directory browser. The Caption parameter specifies a caption for the dialog. The Root parameter specifies the root directory from which to browse. The selected directory is returned as the Directory parameter. When using this syntax, SelectDirectory does not change the value of the current directory.Warning: You can抰 use the same variable for the Root parameter and the Directory parameter.Use the second syntax to call the Select Directory dialog box. The directory passed to the function with the Directory parameter appears as the currently selected directory when the dialog box appears. The name of the directory the user selects becomes the value of Directory when the function returns.The HelpCtx parameter is the help context ID number.The Options parameter is a set of values. If Options is the empty set, the user can only select a directory that already exists. No edit box is provided for the user to enter a new directory name. If Options is not empty, the included values determine how the dialog responds when the user types a nonexistent directory name.With either syntax, SelectDirectory returns True if the user selected a directory and chose OK, and False if the user chose Cancel or closed the dialog box without selecting a directory.
SelectDirectory ExampleThis example uses a button and a label on a form. When the user clicks the button, a Select Directory dialog box appears. The current directory displayed in the dialog box is C:\MYDIR. The user can select a directory from the directory list, or enter a new directory in the edit box. If the user enters a new directory, a message box asks the user if the directory should be created. If the user chooses Yes, the directory is created. If the user chooses No, the message box goes away without creating the directory. The name of the directory the user selects appears as the caption of the label:uses FileCtrl;const SELDIRHELP = 1000; procedure TForm1.Button1Click(Sender: TObject); var Dir: string; begin Dir := 'C:\MYDIR'; if SelectDirectory(Dir, [sdAllowCreate, sdPerformCreate, sdPrompt],SELDIRHELP) then Label1.Caption := Dir; end;
shlobj,ActiveX;
var
Form1: TForm1;
Path: string; //起始路径implementation {$R *.DFM} function BrowseCallbackProc(hwnd: HWND;uMsg: UINT;lParam: Cardinal;lpData: Cardinal): integer; stdcall;
begin
if uMsg=BFFM_INITIALIZED then
result :=SendMessage(Hwnd,BFFM_SETSELECTION,Ord(TRUE),Longint(PChar(Path)))
else
result :=1
end; function SelDir(const Caption: string; const Root: WideString; out Directory: string): Boolean;
var
WindowList: Pointer;
BrowseInfo: TBrowseInfo;
Buffer: PChar;
RootItemIDList, ItemIDList: PItemIDList;
ShellMalloc: IMalloc;
IDesktopFolder: IShellFolder;
Eaten, Flags: LongWord;
begin
Result := False;
Directory := '';
FillChar(BrowseInfo, SizeOf(BrowseInfo), 0);
if (ShGetMalloc(ShellMalloc) = S_OK) and (ShellMalloc <> nil) then
begin
Buffer := ShellMalloc.Alloc(MAX_PATH);
try
RootItemIDList := nil;
if Root <> '' then begin
SHGetDesktopFolder(IDesktopFolder);
IDesktopFolder.ParseDisplayName(Application.Handle, nil, POleStr(Root), Eaten, RootItemIDList, Flags);
end;
with BrowseInfo do begin
hwndOwner := Application.Handle;
pidlRoot := RootItemIDList;
pszDisplayName := Buffer;
lpszTitle := PChar(Caption);
ulFlags := BIF_RETURNONLYFSDIRS;
lpfn :=@BrowseCallbackProc;
lParam :=BFFM_INITIALIZED;
end;
WindowList := DisableTaskWindows(0);
try
ItemIDList := ShBrowseForFolder(BrowseInfo);
finally
EnableTaskWindows(WindowList);
end;
Result := ItemIDList <> nil;
if Result then begin
ShGetPathFromIDList(ItemIDList, Buffer);
ShellMalloc.Free(ItemIDList);
Directory := Buffer;
end;
finally
ShellMalloc.Free(Buffer);
end;
end;
end; procedure TForm1.SpeedButton1Click(Sender: TObject);
var
Path1: string;
begin
Path :=Edit1.Text;
SelDir('SelectDirectory Sample','d:\temp',Path1);
Edit1.Text :=Path1
end;
控件面板 win3.1 下的
DirectoryListBox1
直接用SelectDirectory函数不就的了，有这样的控件，但SelectDirectory函数功能和他一样啊
UnitFileCtrlCategorydialog and message routinesfunction SelectDirectory(const Caption: string; const Root: WideString; out Directory: string): Boolean; overload;
function SelectDirectory(var Directory: string; Options: TSelectDirOpts; HelpCtx: Longint): Boolean; overload;DescriptionCall SelectDirectory to let the user enter a directory name. Use the first syntax to display the Windows directory browser. The Caption parameter specifies a caption for the dialog. The Root parameter specifies the root directory from which to browse. The selected directory is returned as the Directory parameter. When using this syntax, SelectDirectory does not change the value of the current directory.Warning: You can抰 use the same variable for the Root parameter and the Directory parameter.Use the second syntax to call the Select Directory dialog box. The directory passed to the function with the Directory parameter appears as the currently selected directory when the dialog box appears. The name of the directory the user selects becomes the value of Directory when the function returns.The HelpCtx parameter is the help context ID number.The Options parameter is a set of values. If Options is the empty set, the user can only select a directory that already exists. No edit box is provided for the user to enter a new directory name. If Options is not empty, the included values determine how the dialog responds when the user types a nonexistent directory name.With either syntax, SelectDirectory returns True if the user selected a directory and chose OK, and False if the user chose Cancel or closed the dialog box without selecting a directory.
SELDIRHELP = 1000;
procedure TForm1.Button1Click(Sender: TObject);
var
Dir: string;
begin
Dir := 'C:\MYDIR';
if SelectDirectory(Dir, [sdAllowCreate, sdPerformCreate, sdPrompt],SELDIRHELP) then
Label1.Caption := Dir;
end;