OpenEuphoria

1. Windows help help

• Posted by Mike777 <anon4321 at g?ai?.com> Jan 04, 2008
• 574 views

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

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)

=======================================

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.

3. Re: Windows help help

• Posted by Mike777 <anon4321 at gmail?c?m> Jan 07, 2008
• 584 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