// form'a button ve Label koyun.. Çok güzel bir kod.
uses shellapi;
function FindTaskBar(var ARect: TRect): Integer;
var
AppData: TAppBarData;
begin
// 'Shell_TrayWnd' is the name of the task bar's window
AppData.Hwnd := FindWindow('Shell_TrayWnd', nil);
if AppData.Hwnd = 0 then
RaiseLastWin32Error;
AppData.cbSize := SizeOf(TAppBarData);
// SHAppBarMessage will return False (0) when an error
// happens.
if SHAppBarMessage(ABM_GETTASKBARPOS, AppData) = 0 then
raise Exception.Create('SHAppBarMessage returned false when trying ' +
'to find the Task Bar''s position');
// Otherwise, we had success, so fill in the results.
Result := AppData.uEdge;
ARect := AppData.rc;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
Rect: TRect;
DestLeft: Integer;
DestTop: Integer;
begin
DestLeft := Left;
DestTop := Top;
case FindTaskBar(Rect) of
ABE_BOTTOM:
begin
DestLeft := Trunc((Screen.Width - Width) / 2.0);
DestTop := Rect.Top - Height;
end;
ABE_LEFT:
begin
DestTop := Trunc((Screen.Height - Height) / 2.0);
DestLeft := Rect.Right;
end;
ABE_RIGHT:
begin
DestTop := Trunc((Screen.Height - Height) / 2.0);
DestLeft := Rect.Left - Width;
end;
ABE_TOP:
begin
DestLeft := Trunc((Screen.Width - Width) / 2.0);
DestTop := Rect.Bottom;
end;
end;
Label1.Caption := Format('Found at Top: %d Left: %d Bottom: %d Right: %d)',
[Rect.Top, Rect.Left, Rect.Bottom, Rect.Right]);
// Move us to the task bar
while (Left <> DestLeft) or (Top <> DestTop) do
begin
if Left < DestLeft then
Left := Left + 1
else if Left <> DestLeft then
Left := Left - 1;
if Top < DestTop then
Top := Top + 1
else if Top <> DestTop then
Top := Top - 1;
Application.ProcessMessages;
end;
end;