My html help file is not being displayed.

[thulina]

I am using the function, "ShowHtmlHelp (HelpFilePathname, HH_DISPLAY_TOPIC, NULL);".  HelpFilePathname contains the path to my help file, called TLL-Help.chm.  If I click on the chm file directly, the help file opens with no problems.  But from within my code, it doesn't open, and I don't get any errors. 

[josswern]

did you check the return value of the function ?
(e.g. Status = ShowHtmlHelp (HelpFilePathname, HH_DISPLAY_TOPIC, NULL); )

or, maybe, the help components server is not installed ?
see function help:

...This function requires that the HTML Help components server, specifically hhctrl.ocx, is present on your system.