Connect new .chm files to old Programs?

[Clay L]

I have a number of VC++ programs written when .hlp files were in use. I am rewriting my old .hlp files as the newer .chm files.

Can someone point me to a guide showing the changes I need to make to my old programs so that clicking "Help" will run a .chm file instead of a .hlp file?

Clay

[VictorN]

Search MSDN for HtmlHelp

[Clay L]

I have done that. I got a lot of articles about context help .html files which didn't seem applicable.
I may have missed something though.
I was hoping there are some simple changes I can make to the places where the old hlp files are called in my programs.

[Clay L]

In case someone else is interested this is what I came up with.
I added the following to the OnHelp event handler.

void CDBcalcDlg::OnHelp()
{
char szAppPath[MAX_PATH] = "";
CString strAppDirectory;
CString strToOpen;

::GetModuleFileName(0, szAppPath, sizeof(szAppPath) - 1);

// Extract directory
strAppDirectory = szAppPath;
strAppDirectory = strAppDirectory.Left(strAppDirectory.ReverseFind('\\'));

strToOpen = strAppDirectory + _T("\\dBcalc.chm");
ShellExecute(hWnd, _T("open"), _T(strToOpen),NULL, NULL, SW_SHOWNORMAL);


}