WinAPI: InflateRect - 改变矩形大小

//声明:

InflateRect(

  var lprc: TRect; {要修改的矩形}

  dx, dy: Integer  {变化值}

): BOOL;


 
   




//举例:

procedure TForm1.FormPaint(Sender: TObject);

var

  R: TRect;

const

  s = '%d,%d,%d,%d';

begin

  R := Rect(60, 60, 200, 150);



  DrawFocusRect(Canvas.Handle, R);

  Canvas.TextOut(R.Left, R.Top-15, Format(s,[R.Left,R.Top,R.Right,R.Bottom]));



  InflateRect(R, 20, 20);

  DrawFocusRect(Canvas.Handle, R);

  Canvas.TextOut(R.Left, R.Top-15, Format(s,[R.Left,R.Top,R.Right,R.Bottom]));



  InflateRect(R, -40, -40);

  DrawFocusRect(Canvas.Handle, R);

  Canvas.TextOut(R.Left, R.Top-15, Format(s,[R.Left,R.Top,R.Right,R.Bottom]));

end;


 
   




//效果图:

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