HtmlHelp API

[Coolea]

Trying to invoke calls to .CHM help using Win32 API.
The function is declared as follows
Public Declare Function HTMLHelp Lib "HHCtrl.ocx" Alias "HtmlHelpA" _
(ByVal hWndCaller As Long, ByVal pszFile As String, ByVal uCommand As Long, _
ByVal dwData As Integer) As Long

The call to this function runs straight through and returns a Windows handle reference but no Help Window is invoked.

The test of the HTML API when I use the Microsoft Help Workshop picks out the targetted page fine.
Any suggestions

 

[Volte]

What code are you using? Are you using the HH_DISPLAY_TOPIC constant for the uCommand parameter?

Const HH_DISPLAY_TOPIC As Integer = &H0

Also, youll most likely need to convert the Long declares in the API to Integer for .NET, since ints in .NET are 32bit, whereas they are 16bit in VB6.

 

[Divil]

Does the System.Windows.Forms.Help class not do what you need?

 

[Coolea]

Thanks Guys,
the switch from declaring Long to Integer did the trick. Since I am new to .NET with no prior VB6 this was not easy to pick out so thanks again.

I am using the API instead of the Help class as I believe the Help is limited in how it can handle Popups. I want to have independant resource files for the user help instead of tooltip type strings embedded on each control.


Coolea

 

[lu8890]

htmlhelp.lib and managed code in C#

Hi:

I am new in htmlhelp api.
I am hoping to use C# to access APIs provided by Microsoft HTML Help.
I am wondering if there is a way to access these apis using C#?
Are they exposed thru htmlhelp.lib?
How would I access them?

any hint and help is greatly appreciated.

thank you.

Tommy