no instance of overloaded function "AfxMessageBox" matches the argument list

問題描述

AfxMessageBox("Failed to connect to server\nTry again?",MB_YESNO) 
出現問題：no instance of overloaded function "AfxMessageBox" matches the argument list      

解決方案

添加 L  如下

AfxMessageBox( L"Failed to connect to server\nTry again?",MB_YESNO)

究其原因是“字元集”的問題，改“使用 Unicode 字元集”為 “使用多位元組字元集”  AfxMessageBox("Failed to connect to server\nTry again?",MB_YESNO)   不添加 L 也 可以。

int AfxMessageBox(


   LPCTSTR lpszText,


   UINT nType = MB_OK,


   UINT nIDHelp = 0 


);



      

Parameters

lpszText

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

nType

The style of the message box. Apply any of the message-box styles to the box.

nIDHelp

The Help context ID for the message; 0 indicates the application's default Help context will be used.

Remarks

The first form of this overloaded function displays a text string pointed to by lpszText in the message box and uses nIDHelp to describe a Help context. The Help context is used to jump to an associated Help topic when the user presses the Help key (typically F1).

Example

// A simple message box, with only the OK button.


AfxMessageBox("Simple message box.");




// A message box that uses a string from a string table

// with yes and no buttons and the stop icon.


// NOTE: nStringID is an integer that contains a valid id of

// a string in the current resource.



AfxMessageBox(nStringID, MB_YESNO|MB_ICONSTOP);