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.

:confused: 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, you'll 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.

 

 

:D 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