WinAPI: DrawCaption 绘制标题栏

//声明:
DrawCaption(
  p1: HWND;        {窗口句柄}
  p2: HDC;         {设备环境句柄}
  const p3: TRect; {矩形}
  p4: UINT         {选项}
): BOOL;

//p4 参数可选值:
DC_ACTIVE   = 1;     {使用活动标题栏颜色}
DC_SMALLCAP = 2;     {使用当前小标题栏字体}
DC_ICON     = 4;     {使用图标}
DC_TEXT     = 8;     {绘制标题}
DC_INBUTTON = $10;   {按下状态}
DC_GRADIENT = $20;   {使用渐变色}
DC_BUTTONS  = $1000; {}


//举例:
procedure TForm1.FormPaint(Sender: TObject);
begin
  DrawCaption(
    Handle,
    Canvas.Handle,
    Rect(16,40,288,60),
    DC_ACTIVE or DC_ICON or DC_TEXT or DC_GRADIENT
  );
end;


//效果图:

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