Mencegah aplikasi ditutup dengan Alt-F4

private
procedure AppMessage(var Msg: TMSG; var Handled: Boolean);
public
{ Public declarations }
end;
…
…
implementation
…
…
procedure TForm1.FormCreate(Sender: TObject);
begin
Application.OnMessage := AppMessage;
end;

procedure TForm1.AppMessage(var Msg: TMSG; var Handled: Boolean);
begin
// meng-handle pesan
Handled := False;
case Msg.Message of
WM_SYSKEYDOWN:
if Msg.wParam = VK_F4 then
Handled := True; // cegah Alt-F4
end;
end;

Read more.....

Get Start Menu Directory

This function used to get start menu directory.

uses shlobj;

function GetStartMenu: String;
var
dir: PItemIDList;
startmenu : array[0..MAX_PATH] of Char;
begin
SHGetSpecialFolderLocation(Application.handle, CSIDL_STARTMENU, dir);
SHGetPathFromIDList(dir, startmenu);
result := strpas(startmenu);
end;

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
Edit1.Text := GetStartMenu;
end;

Download: Source Code

Read more.....

Minimize all windows

You can minimize all windows with this code snippets.

procedure MinimizeAll;
var
h:HWnd;
begin
h:=handle;
while h > 0 do
begin
if IsWindowVisible(h) then
Postmessage(h,WM_SYSCOMMAND,SC_MINIMIZE,0);
h:=GetnextWindow(h,GW_HWNDNEXT);
end;
end;

Read more.....

Close all the open Internet Explorer windows

Use this to close all open Internet Explorer windows.

var
IExplorer: Thandle;
begin
IExplorer := FindWindow('’ IEFrame ‘’, nil);
if IExplorer <> 0 then
SendMessage(IExplorer, WM_SYSCOMMAND, SC_CLOSE, 0);

The FindWindow function retrieves the handle to the top-level window whose class name and window name match the specified strings. This function does not search child windows.

HWND FindWindow(

LPCTSTR lpClassName, // pointer to class name
LPCTSTR lpWindowName // pointer to window name
);

Parameters

lpClassName

Points to a null-terminated string that specifies the class name or is an atom that identifies the class-name string. If this parameter is an atom, it must be a global atom created by a previous call to the GlobalAddAtom function. The atom, a 16-bit value, must be placed in the low-order word of lpClassName; the high-order word must be zero.

lpWindowName

Points to a null-terminated string that specifies the window name (the window’s title). If this parameter is NULL, all window names match.

Return Values

If the function succeeds, the return value is the handle to the window that has the specified class name and window name.
If the function fails, the return value is NULL. To get extended error information, call GetLastError

Read more.....

Empty Recycle Bin

Procedure to empty recycle bin

Procedure EmptyRecycleBin ;
Const
SHERB_NOCONFIRMATION = $00000001 ;
SHERB_NOPROGRESSUI = $00000002 ;
SHERB_NOSOUND = $00000004 ;
Type
TSHEmptyRecycleBin = function (Wnd : HWND;
pszRootPath : PChar;
dwFlags : DWORD
) : HRESULT; stdcall ;
Var
SHEmptyRecycleBin : TSHEmptyRecycleBin;
LibHandle : THandle;
Begin { EmptyRecycleBin }
LibHandle := LoadLibrary(PChar(’Shell32.dll’)) ;
if LibHandle <> 0 then
@SHEmptyRecycleBin := GetProcAddress(LibHandle, ‘SHEmptyRecycleBinA’)
else
begin
MessageDlg(’Failed to load Shell32.dll.’, mtError, [mbOK], 0);
Exit;
end;

if @SHEmptyRecycleBin <> nil then
SHEmptyRecycleBin(Application.Handle,
nil,
SHERB_NOCONFIRMATION or SHERB_NOPROGRESSUI or SHERB_NOSOUND);
FreeLibrary(LibHandle);
@SHEmptyRecycleBin := nil ;
end; { EmptyRecycleBin }

Read more.....