1.procedure ShowMessage(const Msg: string);
单元:Dialogsor QDialogs
例子:showmessage( 'hello ');
2.function MessageBox(const Text, Caption: PChar; Flags: Longint = MB_OK): Integer;
单元:Forms
例子:MessageBox( 'This should be on top. ', 'Look ', mb_OK)
注:delphi的帮助文档提供的例子好像有误他的最后一个参数是[sbmok]
3.function MessageDlg(const Msg: string; DlgType: TMsgDlgType; Buttons: TMsgDlgButtons; HelpCtx: Longint): Word;
单元:Dialogsor QDialogs
例子:if messagedlg( '确定要退出吗? ',mtwarnint,[mbyes,mbno],0)=mryes then close;
4.int MessageBox(
HWND hWnd, // handle of owner window
LPCTSTR lpText, // address of text in message box
LPCTSTR lpCaption, // address of title of message box
UINT uType // style of message box
);
单元:windows API
例子:windows.messagebox(0, '标题 ', '警告错误 ',MB_ICONSTOP);