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  • 创建异形窗口[2]

    本例效果图:


    unit Unit1;
    
    interface
    
    uses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs, StdCtrls;
    
    type
      TForm1 = class(TForm)
        Button1: TButton;
        procedure FormCreate(Sender: TObject);
        procedure Button1Click(Sender: TObject);
        procedure FormDblClick(Sender: TObject);
      end;
    
    var
      Form1: TForm1;
    
    implementation
    
    {$R *.dfm}
    
    procedure TForm1.FormCreate(Sender: TObject);
    begin
      Button1.Caption := '创建';
    end;
    
    procedure TForm1.Button1Click(Sender: TObject);
    const
      pts: array[0..3] of TPoint = (
        (x:10; y:40),
        (x:46; y:120),
        (x:82; y:40),
        (x:46; y:10)
      );
    var
      rgn: HRGN;
    begin
      rgn := CreatePolygonRgn(pts, Length(pts), 1); {1:ALTERNATE; 2:WINDING}
      SetWindowRgn(Handle, rgn, True);
    end;
    
    procedure TForm1.FormDblClick(Sender: TObject);
    begin
      Close;
    end;
    
    end.
    
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  • 原文地址:https://www.cnblogs.com/del/p/1177975.html
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