WinAPI: DrawFocusRect 绘制焦点矩形

//声明:
DrawFocusRect(
  hDC: HDC;         {设备环境句柄}
  const lprc: TRect {矩形结构}
): BOOL;


//举例:
procedure TForm1.FormPaint(Sender: TObject);
var
  MyRect: TRect;
begin
  MyRect := Rect(20,20, 180,100);
  DrawFocusRect(Canvas.Handle, MyRect);
end;


//效果图:

---