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Tip of the Day
Language: Visual Basic
Expertise: Intermediate
Aug 6, 1997

Open Help File Contents

Most programmers want their applications to look like commercial software, so they want to add their own help files. How do you open the contents of a Windows help file in your application? Simply paste in this code, which uses Win32 API function:
 
' ---- Declares
Const HELP_CONTENTS = &H3&
' Display contents
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

' --- Code
Sub OpenHelpFile(HelpFileName As String)
        ' HelpFileName is the path of the 
        ' help file.
        WinHelp hwnd, HelpFileName, _
                HELP_CONTENTS, 0
End Sub
Huang Xiongbai
 
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