Using a help file in an app

[Stretchwickster]

Hey everyone!

I've just written my own help file and have managed to open it when I click a button named 'Help' with the following lines:

  Application.HelpFile := 'IMDM Help.hlp';
  Application.HelpCommand(HELP_FINDER, 0);

However, in addition to this button, I want to be able to use the Question Mark symbol (in the top-right of the form) and drop it on certain edit controls to display the help file.

Do I need to use an OnDragDrop event or is there a specific event to use for this '?' button thing?

Any suggestions would be gratefully received!

 

[Stretchwickster]

Problem solved. All you need to do is include a number in the HelpContext property that corresponds to a Map ID of your help file.

 

[sggaunt]

The question mark is normaly used to provide hints on parts of your form as you say to drag a Question mark cursor over a button for exapmle then click to get the Hint message.
Calling help ID's in the way suggested is a valid way to open your help file at the correct Topic but I think this is not the same thing.
I use a free 3rd party component called EHS Help Router which simplifys this sort of thing.
Steve.