How to map help id of a error messagebox in MFC? - c++

Question

I have a dialog box in MFC which has help button.
I am able to map help button with my help content.
on my dialog box, I have a edit box also i which user can enter anything.
i am validating the edit control box that if something wrong user enters it will open
error message box which display error and having help button too.
i wanted to map this error message box helpid to my content (which different from parent dialog box) but whenever click help button it shows me parent help content.
NOTE: i tried both APIs Afxmessagebox and Messagebox.
Solution from my side , (i don't know if it is correct )
Create another dialog box and mapp to help id as i di fro parent dialog box.
and treat this dialog box as a error messagebox with domodal.
I feel i we can do this with messagebox itself but didn't find anything on web.
What i tried -
I tried following link but couldn't get success.
http://www.codeproject.com/Articles/562/Add-a-Help-Button-to-a-MessageBox
VOID CALLBACK MsgBoxCallback(LPHELPINFO lpHelpInfo)
{
CString str = AfxGetApp()->m_pszHelpFilePath;
AfxGetApp()->WinHelp(lpHelpInfo->dwContextId);
}
UINT AfxMessageBox(HWND hWnd, LPCTSTR szText, UINT nType, UINT nIDHelp = 0)
{
MSGBOXPARAMS mbp;
memset(&mbp, 0, sizeof mbp);
mbp.cbSize = sizeof MSGBOXPARAMS;
mbp.hwndOwner = hWnd;
mbp.hInstance = AfxGetInstanceHandle();
mbp.lpszText = szText;
AfxGetApp()->m_pszHelpFilePath = "C:\\Program Files (x86)\\\HELP\\130.htm";
// if you wanted to specify a different caption, here is where you do it
mbp.lpszCaption = AfxGetAppName();
// if Help ID is not 0, then add a help button
if (nIDHelp != 0)
{
mbp.dwStyle = nType | MB_HELP;
}
else
{
mbp.dwStyle = nType;
}
// mbp.lpszIcon = ; // note, you could provide your own custom ICON here!
mbp.dwContextHelpId = nIDHelp;
mbp.lpfnMsgBoxCallback = &MsgBoxCallback;
mbp.dwLanguageId = 0x0409;
return ::MessageBoxIndirect(&mbp);
}

Answer 1

Here's how to do it:
Create a string resource for each message box.
Be sure to name the resource with an IDP_ prefix. Although IDS_ also corresponds to strings, the makehm command-line tool will not look for IDS_ when it builds the HTMLDefines.h file.
Change your message box call(s) to AfxMessageBox(IDP_FOO, MB_OK|MB_HELP, IDP_FOO), substituting in other flags, as needed.
(Note: I had another answer, but it was way off, so I decided to start clean with a new answer instead of updating it.)