Description of TCapHelp :
TCapHelp places a '?' button on the caption bar of the TForm that the component is placed on. It gives the same functionality as biHelp on a dialog form, except that it also works on resizable forms. Just pop the component onto a TForm, and it will then bring up the context sensitive help for the components on your form. (TSpeedButton does not have a HelpContext property, therefore it will not display context sensitive help.) If you enter the adress of your *.chm help file, it will use the new HTMLHELP API, otherwise if left blank, it will use the old *.hlp files. The call to the new HTMLHELP API is made by the component.