OpenEuphoria

Re: Windows help help

• Posted by Mike777 <anon4321 at gmail?c?m> Jan 07, 2008
• 583 views

CChris wrote:
> 
> Mike777 wrote:
> > 
> > I have used the routine below, which I found by searching this forum, to
> > successfully
> > access help files, complete with context sensitive topic loading.  However,
> > it only loads specific pages when used with HLP files.  While a CHM file
> > will
> > fire, it will never fire with focus on the specific page.  Can anybody see
> > if
> > there is something I'm doing wrong?  It is, of course, possible that the
> > compiler
> > I'm using somehow strays from the straight and narrow and therefore my
> > attempt
> > to use CHM files for context sensitive help is futile.  I'm using HelpMaker
> > 7.3.40.0 in case somebody has experience with that product.
> > 
> > Thanks
> > 
> > mike
> > 
> > }}}
<eucode>
> > global integer callWindowsHelp, libHtmlHelp
> > libHtmlHelp = registerw32Library("hhctrl.ocx")
> > global procedure LetsCallWinHelp(sequence FileName, -- help file name
> > 			atom command, -- type of help needed
> > 			atom data) -- value related to type of command
> > atom file_ptr, start
> > file_ptr=acquire_mem(0,FileName)
> > start = w32Func(callWindowsHelp, {getHandle(Window1), file_ptr,command,
> > data})
> > release_mem(file_ptr)
> > end procedure
> > 
> > callWindowsHelp = registerw32Function(libHtmlHelp, "HtmlHelpA", {C_INT,
> > C_INT, C_INT, C_INT}, C_INT)
> > 
> > LetsCallWinHelp("C:\\pathtomyhelpfile\\myhelpfile.hlp",1,150)
> > </eucode>
{{{

> > =======================================
> > 
> > Topic ID 150 loads just fine with myhelpfile.hlp.  But using myhelpfile.chm
> > it just loads the Getting Started page (topic id = 30), which is the lowest
> > topic id that is a real page.
> 
> I expect you to benefit from this reading:
> <a
> href="http://www.help-info.de/en/Help_Info_HTMLHelp/hh_api.htm">http://www.help-info.de/en/Help_Info_HTMLHelp/hh_api.htm</a>

You expect correctly!  Thanks for the link.  Cleared everything up.

> In particular, the page suggests using the HH_DISPLAY_TOPIC command, which is
> 0, instead of HH_DISPLAY_TOC, which is 1. I'm not surprised that you get the
> TOC using uCommand=1.

Just to clarify, since the third argument I'm using is the ID (an atom), not the
string which is representative of the topic, then the page suggests using
HH_HELP_CONTEXT (15).

Thanks again.

Mike