學習 Message(20): WM_SYSCOMMAND 消息[四] : 使最大最小化按鈕失效

unit Unit1;

interface

uses
　 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
　 Dialogs;

type
　 TForm1 = class(TForm)
　 protected
　　　 procedure WMSysCommand(var Message: TWMSysCommand); message WM_SYSCOMMAND;
　 end;

var
　 Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.WMSysCommand(var Message: TWMSysCommand);
begin
　 case Message.CmdType of
　　　 SC_MAXIMIZE: Exit;
　　　 SC_MINIMIZE: Exit;
　 end;
　 inherited;
end;

end.