上位机MFC如何弹出消息对话框

弹出消息对话框，从CWnd派生的类都自带有一个函数CWnd::MessageBox也就是说我们窗口类里都可以调用此函数来显示提示文本。
int MessageBox( LPCTSTR lpszText, LPCTSTR lpszCaption = NULL, UINT nType = MB_OK );

Return Value

Specifies the outcome of the function. It is 0 if there is not enough memory to create the message box.

Parameters

lpszText

Points to a CString object or null-terminated string containing the message to be displayed.

lpszCaption

Points to a CString object or null-terminated string to be used for the message-box caption. If lpszCaption is NULL, the default caption “Error” is used.

nType

Specifies the contents and behavior of the message box.

MSDN内有详细介绍