实现无标题栏但有边框的窗口

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)

    CheckBox1: TCheckBox;

    procedure CheckBox1Click(Sender: TObject);

  private

    procedure MyMsg(var Msg: TWMNCHitTest); message WM_NCHITTEST;

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure TForm1.CheckBox1Click(Sender: TObject);

begin

  SetWindowLong(Handle, GWL_STYLE, GetWindowLong(Handle, GWL_STYLE) xor WS_CAPTION);

  if not CheckBox1.Checked then begin Hide; Show; end;

end;



procedure TForm1.MyMsg(var Msg: TWMNCHitTest);

begin

  Inherited;

  if Msg.Result = HTCLIENT then Msg.Result := HTCAPTION;

end;



end.


 
   

窗体文件:

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object Form1: TForm1

  Left = 0

  Top = 0

  Caption = 'Form1'

  ClientHeight = 107

  ClientWidth = 228

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'Tahoma'

  Font.Style = []

  OldCreateOrder = False

  PixelsPerInch = 96

  TextHeight = 13

  object CheckBox1: TCheckBox

    Left = 32

    Top = 40

    Width = 161

    Height = 17

    Caption = #26080#26631#39064#26639#20294#26377#36793#26694#30340#31383#21475

    TabOrder = 0

    OnClick = CheckBox1Click

  end

end