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...Draw on a Form's Caption bar?
Autor: Damian Gorski
[ Print tip ]  

Tip Rating (14):  
     


{
 You have to handle the WM_NCPAINT message.
 Something like this (for custom text) Should be similar for bitmaps.
}

type
  
TForm1 = class(TForm)
  private
    procedure 
WMNCPaint(var Msg: TWMNCPaint); message WM_NCPAINT;
  public
  end
;

var
  
Form1: TForm1;

implementation

{$r *.dfm}

procedure TForm1.WMNCPaint(var Msg: TWMNCPaint);
var
  
ACanvas: TCanvas;
begin
  inherited
;
  ACanvas := TCanvas.Create;
  try
    
ACanvas.Handle := GetWindowDC(Form1.Handle);
    with ACanvas do 
    begin
      
Brush.Color := clActiveCaption;
      Font.Name := 'Tahoma';
      Font.Size := 8;
      Font.Color := clred;
      Font.Style := [fsItalic, fsBold];
      TextOut(GetSystemMetrics(SM_CYMENU) + GetSystemMetrics(SM_CXBORDER),
        Round((GetSystemMetrics(SM_CYCAPTION) - Abs(Font.Height)) / 2) + 1, ' Some Text');
    end;
  finally
    
ReleaseDC(Form1.Handle, ACanvas.Handle);
    ACanvas.Free;
  end;
end;

 

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