Bilder in einer Combobox

[Luckie]

Delphi-Quellcode:

var 
  Bitmap1, Bitmap2, Bitmap3, Bitmap4: TBitmap; 
... 
procedure TForm1.FormCreate(Sender: TObject); 
begin 
  ComboBox1.Style:=csOwnerDrawVariable; 
  //Set height of one item 
  ComboBox1.ItemHeight:=20; 
  //load all bitmaps 
  Bitmap1 := TBitmap.Create; 
  Bitmap1.LoadFromFile('chem16.bmp'); 
  Bitmap2 := TBitmap.Create; 
  Bitmap2.LoadFromFile('chip16.bmp'); 
  Bitmap3 := TBitmap.Create; 
  Bitmap3.LoadFromFile('factry16.bmp'); 
  Bitmap4 := TBitmap.Create; 
  Bitmap4.LoadFromFile('skylin16.bmp'); 
  //assign bitmaps with item objects - caption of the items: Bitmap 1 - Bitmap 4 
  ComboBox1.Items.AddObject('Bitmap 1', Bitmap1); 
  ComboBox1.Items.AddObject('Bitmap 2', Bitmap2); 
  ComboBox1.Items.AddObject('Bitmap 3', Bitmap3); 
  ComboBox1.Items.AddObject('Bitmap 4', Bitmap4); 
end; 
procedure TForm1.ComboBox1DrawItem(Control: TWinControl; Index: Integer; 
  Rect: TRect; State: TOwnerDrawState); 
var 
  Bitmap: TBitmap; 
  Offset: Integer; 
begin 
  offset:=0; 
  with ComboBox1.Canvas do 
  begin 
    FillRect(Rect); 
    Bitmap := TBitmap(ComboBox1.Items.Objects[index]); 
    if Bitmap <> nil then 
    begin 
      //copy bitmap to combobox coordinate 
      BrushCopy(Bounds(Rect.Left + 2, Rect.Top + 2, Bitmap.Width, 
      Bitmap.Height), Bitmap, Bounds(0, 0, Bitmap.Width, 
      Bitmap.Height), clred); 
      Offset := Bitmap.width + 8; 
    end; 
    //Set a caption to each item 
    TextOut(Rect.Left + Offset, Rect.Top, Combobox1.Items[Index]); 
  end; 
end; 
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction); 
begin 
  //free all bitmap objects 
  bitmap1.Free; 
  bitmap2.Free; 
  bitmap3.Free; 
  bitmap4.Free; 
end;

Gefunden in einem Beitrag von Luckie.