Error C2665 Afxmessagebox None
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just like you, helping each other. Join them; it only takes a minute: Sign up some problem with AfxMessageBox() MFC function up vote 0 down vote favorite I am making a program for loading a picture from camera using Open.Cv .. And i am getting error in AfxMessageBox() statement.. program: BOOL CObjectBoundDetectDlg::OnInitDialog() { CDialogEx::OnInitDialog(); // afxmessagebox vs messagebox Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { BOOL bNameValid; CString strAboutMenu; bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX); ASSERT(bNameValid); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } } int nSelected = cvcamGetCamerasCount(); if(nSelected == 0) { AfxMessageBox("Camera have no connection",MB_OK|MB_ICONSTOP); return FALSE; } } error: Error 2 error C2665: 'AfxMessageBox' : none of the 2 overloads could convert all the argument types c:\program files\microsoft visual studio 10.0\my project\objectbounddetect\objectbounddetect\objectbounddetectdlg.cpp 126 1 ObjectBoundDetect if i look on the defination of AfxMessageBox() ... provided in this [link]](http://msdn.microsoft.com/en-us/library/as6se7cb(v=vs.80).aspx) ... it should work.. but i think some problem in parameter list .. that i am not understanding... According to the defination.. AfxMessageBox() statement should not make me error ... Any one can help me with this problem .. Expoecting a good response thanks .. Note: Camera is already Attached,.. no problem with camera .. c++ mfc share|improve t
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all the argument types itdadao 2016-10-02 04:21:39 技术 ℃ 0 评论 AfxMessageBox(("please enter number")); 错误 error C2665: 'AfxMessageBox' : none of the 2 overloads could convert all the argument types 用的是vc2005 解答： VS2005编译器的检查更严格了，在vc6和vc7种可以编译通过的语句：AfxMessageBox(“please enter number”); VS2005编译器只能写成AfxMessageBox(_T("please enter number"));才能使用，否则编译器会告诉你有两个AfxMessageBox函数，但编译器不知道使用哪一个。错误提示如上。
在书写代码的时候要养成使用TEXT("")或_T("")的习惯，这样文本在UNICODE和非UNICODE程序里都通用! AfxMessageBox和MessageBox区别 如果用MFC的话，请尽量使用afxmessagebox，因为这个全局的对话框最安全，也最方便。 但是在WIN32 SDK的情况下只能使用MESSAGEBOX。 MessageBox()是Win32API函数.后者是mfc中的全局函数．在MFC中能用MessageBox()的地方都能用AfxMessageBox()． afxmessagebox更多的时候是用于调试 AfxMessageBox 比 MessageBox 方便！ MessageBox 比 AfxMessageBox 灵活(如指定对话框标题等)！ MessageBox 是 Win32 API ，可以直接使用；AfxMessageBox是MFC的API，需要MFC支持。 如果用MFC的话，请尽量使用afxmessagebox，因为这个全局的对话框最安全，也最方便。但是在WIN32 SDK的情况下只能使用MESSAGEBOX。 Afx开头的都是全局函数，也就是说AfxMessageBox可以用于任何程序；而MessageBox只能用在CWnd及其派生类中。 MessageBox可以任意设置标题，而AfxMessageBox不能。 两个函数的区别： AfxMessageBox是MFC库提供的全局函数，提供了多种重载形式，而MessageBox是标准的windows Api函数. AfxMessageBox()函数在任何类里边都可以使用，而MessageBox()函数只能在CWnd类的继承类中使用。另外，AfxMessageBox()函数的参数没有MessageBox()函数的参数丰富，所以后者较前者灵活。 AfxMessageBox不能控制消息框标题，常用于调试程序时的内部数据输出或警告；MessageBox比较正式，常用在要提交的应用程序版本中，可以控制标题内容而不必采用含义不明的可执行文件名为标题。 以下分别介绍两者: AfxMessageBox的函数原型 int AfxMessageBox( LPCTSTR lpszText, UINT nType = MB