...eine Grafik in einer DBGrid Zelle anzeigen?

// in this sample;

// 1. drop two image component to main form
// 2. fill the images picture with specific country flag (Bitmap Picture)

// The code :

procedure TForm1.DBGrid1DrawColumnCell(Sender: TObject; const Rect: TRect;
  DataCol: Integer; Column: TColumn; State: TGridDrawState);
var
  bmpImage: tBitmap;
  intX, intY: Integer;
begin
  if DataSource1.DataSet.RecNo > 0 then
  begin
    if column.FieldName = 'COUNTRY' then
      with DBGrid1.Canvas do
      begin
        fillRect(rect);
        bmpImage := tBitmap.Create;
        try
          if DBGrid1.DataSource.DataSet.FieldByName('COUNTRY').AsInteger = 0 then
            bmpImage.Assign(image0.Picture.Bitmap);

          if DBGrid1.DataSource.DataSet.FieldByName('COUNTRY').AsInteger = 1 then
            bmpImage.Assign(image1.Picture.Bitmap);

          intX := ((rect.Right - rect.Left) div 2) -
            (bmpImage.Width div 2);

          intY := ((rect.Bottom - rect.Top) div 2) -
            (bmpImage.Height div 2);
          draw(rect.Left + intX, rect.Top + intY, bmpImage);
        finally
          bmpimage.Free;
        end;
      end;
  end;
end;

printed from
www.swissdelphicenter.ch
developers knowledge base