Using Shell Command in vb 6 to call Winhelp file

[mayo]

I had a procedure that calls some executable files. When I call .exe files compiled in VB, there's no error but when I try to call the help file which is created in Winhelp 2000, i got an error message and it wont open.

My code is this:
Shell (strPath & "\Help\MANUAL.HLP"),vbNormalFocus

error message is:"Invalid procedure call."

What is in Winhelp file? can anybody have some solutions for this? thanks..

[pureenhanoi]

I had a procedure that calls some executable files. When I call .exe files compiled in VB, there's no error but when I try to call the help file which is created in Winhelp 2000, i got an error message and it wont open.

My code is this:
Shell (strPath & "\Help\MANUAL.HLP"),vbNormalFocus

error message is:"Invalid procedure call."

What is in Winhelp file? can anybody have some solutions for this? thanks..

Shell command can call excuteable file (.exe,.com,.bat..)only. you cant use this command to call an helpfile.
To use help file, you must link help file to project (on Project Property Page), or call it dirrectly by API function:

Public Declare Function WinHelp Lib "user32" Alias "WinHelpA" (ByVal hwnd As Long, ByVal lpHelpFile As String, ByVal wCommand As Long, ByVal dwData As Long) As Long

[mayo]

thanks for your help... it works!