创建异形窗口[3]

本例效果图:

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代码文件:

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unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;



type

  TForm1 = class(TForm)

    Button1: TButton;

    procedure Button1Click(Sender: TObject);

    procedure FormDblClick(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure TForm1.Button1Click(Sender: TObject);

var

  rgn: HRGN;

begin

  BeginPath(Canvas.Handle);

  SetBKMode(Canvas.Handle, TRANSPARENT);

  Canvas.Font.Size := 56;

  Canvas.Font.Style := [fsBold];

  Canvas.TextOut(12, 12, 'Delphi');

  EndPath(Canvas.Handle);

  rgn := PathToRegion(Canvas.Handle);

  Self.Color := clRed;

  SetWindowRgn(Handle, rgn, True);

end;



procedure TForm1.FormDblClick(Sender: TObject);

begin

  Close;

end;



end.


 
   

窗体文件:

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object Form1: TForm1

  Left = 0

  Top = 0

  Caption = 'Form1'

  ClientHeight = 206

  ClientWidth = 339

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'Tahoma'

  Font.Style = []

  OldCreateOrder = False

  OnDblClick = FormDblClick

  PixelsPerInch = 96

  TextHeight = 13

  object Button1: TButton

    Left = 136

    Top = 112

    Width = 75

    Height = 25

    Caption = 'Button1'

    TabOrder = 0

    OnClick = Button1Click

  end

end