WinAPI: Chord - 绘制弦

//声明:
Chord(
  DC: HDC;                                {设备环境句柄}
  X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer {四个坐标点}
): BOOL;


 
 
 
 
 

 

 
  

//举例:
procedure TForm1.FormPaint(Sender: TObject);
const
  x1 = 10;
  y1 = 10;
  x2 = 200;
  y2 = 200;
  x3 = 130;
  y3 = 200;
  x4 = 160;
  y4 = 10;
begin
  Canvas.TextOut(x1,y1, '1');
  Canvas.TextOut(x2,y2, '2');
  Canvas.TextOut(x3,y3, '3');
  Canvas.TextOut(x4,y4, '4');
  
  Chord(Canvas.Handle, x1,y1, x2,y2, x3,y3, x4,y4);
end;

 
 
 
 
 

 

 
  

//效果图: