Trouble with context-sentive help

Trouble with context-sentive help

I am having trouble using WinHelp in a context-sensitive mode (ie. using HELP_CONTEXT in the second argument. Any experience generating and using help files with CVF? I figured out that I need to use HCW.EXE to create my .HLP file but I'm stuck after that.

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I've used WinHelp in my QuickWin programs successfully--I haven't tried to use any true Win32 API programs with help, but it would probably be similar. I can think of three things--if these don't help, try to give a more specific description of how you're stuck.

1) make sure your help file works...in HelpWorkShop hit the "Run WinHelp" button (right of the "Compile" button), choose a "Mapped Topic ID" that corresponds to one of your popup definitions, then select "Open Help As If It Were...A pop-up", finally click "View Help." Your pop-up definition should appear--if not, you need to fix your help project (check your WinWord RTF file, be sure you used "footnotes" as described in HCW on-line help, make sure you have no compiler errors in HCW).

2) In CVF 5.0d I had to add a defintion for "integer, parameter :: HELP_FINDER #000B" which has probably been fixed in 6.x, but if you're running 5.x, you'll need to add that defintion somewhere (mine's with the definitions for IDH_xxx in a file called HELP.FD).

3) I used a code snippet like this to invoke help from the program...

! Context sensitive help if right-click on Mk81 display
if (mouseButton1.eq.1) then
i4 = IDH_DEFNOPOPUP
l4 = WinHelp(GetHwndQQ(QWIN$FRAMEWINDOW), 'MyHelpFile.hlp'C, &
HELP_CONTEXTPOPUP, %val(i4))
endif

You would want to set i4 to an appropriate IDH_DEFxxx based on the context that your user activated help from--in my final program the "if" statement in the snippet above was replaced by a "case" statement that used DefNoPopup if no pop-up was defined for the x-y position where the mouse was right-clicked.

Hope this helps...
vr/Bonesly_007

Hi Steve!

The "code snippet" in my previous reply looked fine in the preview so rather than hitting "Edit" I hit "OK." But then, what posted didn't look like the preview...any clue as to how that happened? What if I try again...

! Context sensitive help if right-click on display
if (mouseButton1.eq.1) then
i4 = IDH_DEFNOPOPUP
l4 = WinHelp(gethwndqq(QWIN$FRAMEWINDOW), &
'APLT.HLP'C, HELP_CONTEXTPOPUP, %val(i4))
endif

vr/Bonesly_007

Trying the PRE tag...

 
!   Context sensitive help if right-click on display 
if (mouseButton1.eq.1) then 
    i4 = IDH_DEFNOPOPUP 
    l4 = WinHelp(gethwndqq(QWIN$FRAMEWINDOW), & 
        'APLT.HLP'C, HELP_CONTEXTPOPUP, %val(i4)) 
endif 

Well, Bonesly_007, maybe I'm just having trouble figuring out what the four arguments in WinHelp are. The first argument is the window handle, the second is the .hlp file, but the last two arguments are quite a mystery. What is IDH_DEFNOPOPUP?

For context sensative help I use :

lret=WinHelp (hWndMain,lpszHelp,HELP_CONTEXT,MapNum)

hWndMain is the handle of the main window.
lpszHelp is the location of the help file and is null terminated, i.e.
'c: est est.hlp'//c.
MapNum is integer*4 and relates to the number in the MAP section of the help project.

Hope this helps!

David

I was able to get David Graham's context-sensitive help routine to work just fine. Thanks David! Too bad this vital information seems missing (or incoherent) in the CVF manuals.

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