改变TPageControl的活动标签颜色

设置PageControl的owndraw属性为TRUE.

procedure TForm1.pgc1DrawTab(Control: TCustomTabControl; TabIndex: Integer;
  const Rect: TRect; Active: Boolean);
  var
      cc:   Cardinal;
      tabRect:   TRect;
  begin
      CopyRect(tabRect,Rect);
      Control.Canvas.Brush.Color:=   Self.color;
      SetBkMode(Control.Canvas.Handle,1);
      Control.Canvas.FillRect(tabRect);
      cc     :=   SetTextAlign(Control.Canvas.Handle,TA_TOP);
      if(not   Active)   then
      begin
          SetTextColor(Control.Canvas.Handle,RGB(0,0,0));
          Control.Canvas.TextOut(tabRect.Left+5,Rect.Top+2,TPageControl(Control).Pages[TabIndex].Caption);
      end
      else
      begin
          SetTextColor(Control.Canvas.Handle,ColorToRGB(clBlue));
          Control.Canvas.TextOut(tabRect.Left+5,Rect.Top+4,TPageControl(Control).Pages[TabIndex].Caption);
      end;
      SetBkMode(Control.Canvas.Handle,0);
      SetTextAlign(Control.Canvas.Handle,cc);
  end;

http://blog.csdn.net/diligentcatrich/article/details/5573423