关于版本visual studio或函数声明的错误 [英] Error regarding version visual studio or function declaration

问题描述

嗨！

我要将visual studio 2006项目转换为visual studio 2008但是按钮点击事件发生了一些错误

在头文件函数中声明为

afx_msg int OnOk（）;



在.cpp文件消息地图中声明为

ON_BN_CLICKED（IDC_OK ，OnOk）// ON_BN_CLICKED（IDC_OK（Control_Name），OnOk（Event_Name））



&最后定义为

Hi!
I am going to convert visual studio 2006 project to visual studio 2008 but there is some error occured for button click event
In Header file function declared as
afx_msg int OnOk();

In .cpp file message map it declared as
ON_BN_CLICKED(IDC_OK, OnOk)//ON_BN_CLICKED(IDC_OK(Control_Name), OnOk(Event_Name))

& at last it defined as

int communication::OnOk()
{
    // TODO: Add your control notification handler code here
    UpdateData(TRUE);
   {
           //Some code
   }
    return 0;
}

错误显示： -

Error shows that:-

error C2440: 'static_cast' : cannot convert from 'int (__thiscall communication::* )(void)' to 'AFX_PMSG'

什么是解决方案？

What is solution for that?

推荐答案

AFX_PMSG 定义为 public typedef void（CCmdTarget :: * AFX_PMSG）（void）



这意味着返回类型为void。

AFX_PMSG is defined as public typedef void( CCmdTarget::* AFX_PMSG )( void )

That means the return type is void.

尝试将返回类型从int更改为void。通常OnOK不会返回我认为的任何内容（自从您的旧项目版本以来可能在框架中发生了变化）。顺便说一下这个CDialog类？如果是，那肯定是无效的返回类型

Try changing the return type from int to void. Usually OnOK does not return anything I believe (might have changed in the framework since your old project version). Btw is this CDialog class? If yes, it definitely has to be void return type

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