Error c2664: "cwnd: messageboxw": you cannot convert parameter 1 from "const char [17]" to "lpctstr"

Add an event handler to a menu item in MFC:

1.     VoidCmainframe: ontest () 

2.     { 

3.           MessageBox ("YouClickedMenuItem ."); 

4.           //Todo:Add command handler code here  

5.     } 

The following error is reported during compilation: Error c2664: "cwnd: messageboxw": parameter 1 cannot be converted from "const char [17]" to "maid''

The solution is as follows:

Method 1:

Add _ t before the Parameter

That is, MessageBox (_ t "you clicked menu item .");

Method 2:

When creating a project, cancel the use of the Unicode character set, for example, set to not set

Method 3:

Modify the value of the following attribute [character set] to [use multi-Byte Character Set]