What's This Help crashing when using RoboHelp's HtmlHelp API

Question

I followed all the instructions described in the RoboHelp
developer help file. The correct initialisation at the InitInstance
of the application
is called using the CSHInitialize(szHelpPath, TRUE). Then, I
registered the dialog for the "What's This?" help, using the
SHRegisterDialog(...) API. When I right click the mouse on any
control in the dialog I always end up with a crash reporting the
following error:
"The exception unknown software exception (0x0000005) occurred
in the application at location 0x4b78d471".
When we debugged the problem we got the following message in
the debugger which indicates that the crash is happining in the
hhctrl.ocx library:
"Unhandled exception at 0x4b78d471 (hhctrl.ocx) in hoblinkl.exe;
0x0000005: Access violation reading location 0x00000000"
In the meantime another image illustrates the call stack
right before the crash (message not included).
Note that for this application, we have the resouces loaded
from a resource DLL. However, we were told that the help file was
generated using these resource DLLs. We used this dialog as a
testing platform because it is one of the simplest dialogs without
the complexities of property pages etc., which do load certain
dialog resources dynamically.
However, to further test the problem, we implemented the
context sensitive help on a more complex dialog using the standard
HtmlHelp Api, where we are passing an array containing the mappings
between the IDs and the Help topics (for now the mapping is fixed
to one topic ID for simplicity) and I managed to make the context
sensitive help work (not through the What's this menu but rather
through the '?' button at the top right corner of the dialog.) The
proper context help topic is displayed according to the mapped ID.
Has anybody faced this problem and is there a solution for
it? ;

Answer 1

Unfortunately the update did not help. Using the field-level
help in the dialog always ends up with a crash reporting the above
error.
The report generated from Microsoft's Windows XP is as
follows:
<?xml version="1.0" encoding="UTF-16"?>
<DATABASE>
<EXE NAME="HOBLinkL.exe"
FILTER="GRABMI_FILTER_THISFILEONLY">
<MATCHING_FILE NAME="HOBLinkL.exe" SIZE="466944"
CHECKSUM="0xE180B629" BIN_FILE_VERSION="5.3.0.1"
BIN_PRODUCT_VERSION="5.3.0.1" PRODUCT_VERSION="TE Version 5.3"
FILE_DESCRIPTION="HOBLink Launcher" COMPANY_NAME="HOB GmbH
&amp; Co KG" PRODUCT_NAME="HOBLink Terminal Edition"
FILE_VERSION="5, 3, 0, 1" ORIGINAL_FILENAME="HOBLinkL.exe"
INTERNAL_NAME="HOBLinkL" LEGAL_COPYRIGHT="Copyright © 2006,
2007 - HOB GmbH &amp; Co. KG. All rights reserved."
VERFILEDATEHI="0x0" VERFILEDATELO="0x0" VERFILEOS="0x4"
VERFILETYPE="0x1" MODULE_TYPE="WIN32" PE_CHECKSUM="0x5124E"
LINKER_VERSION="0x0" UPTO_BIN_FILE_VERSION="5.3.0.1"
UPTO_BIN_PRODUCT_VERSION="5.3.0.1" LINK_DATE="01/29/2007 07:23:50"
UPTO_LINK_DATE="01/29/2007 07:23:50" VER_LANGUAGE="English (United
States) [0x409]" />
</EXE>
<EXE NAME="hhctrl.ocx"
FILTER="GRABMI_FILTER_THISFILEONLY">
<MATCHING_FILE NAME="hhctrl.ocx" SIZE="546304"
CHECKSUM="0x38577544" BIN_FILE_VERSION="5.2.3790.2453"
BIN_PRODUCT_VERSION="5.2.3790.2453" PRODUCT_VERSION="5.2.3790.2453"
FILE_DESCRIPTION="Microsoft® HTML Help Control"
COMPANY_NAME="Microsoft Corporation" PRODUCT_NAME="HTML Help"
FILE_VERSION="5.2.3790.2453 (srv03_sp1_gdr.050525-1542)"
ORIGINAL_FILENAME="HHCtrl.ocx" INTERNAL_NAME="HHCtrl 1.41"
LEGAL_COPYRIGHT="© Microsoft Corporation. All rights
reserved." VERFILEDATEHI="0x0" VERFILEDATELO="0x0"
VERFILEOS="0x40004" VERFILETYPE="0x1" MODULE_TYPE="WIN32"
PE_CHECKSUM="0x8B1D0" LINKER_VERSION="0x50002"
UPTO_BIN_FILE_VERSION="5.2.3790.2453"
UPTO_BIN_PRODUCT_VERSION="5.2.3790.2453" LINK_DATE="05/27/2005
02:04:27" UPTO_LINK_DATE="05/27/2005 02:04:27"
VER_LANGUAGE="English (United States) [0x409]" />
</EXE>
<EXE NAME="kernel32.dll"
FILTER="GRABMI_FILTER_THISFILEONLY">
<MATCHING_FILE NAME="kernel32.dll" SIZE="983552"
CHECKSUM="0x4CE79457" BIN_FILE_VERSION="5.1.2600.2180"
BIN_PRODUCT_VERSION="5.1.2600.2180" PRODUCT_VERSION="5.1.2600.2180"
FILE_DESCRIPTION="Windows NT BASE API Client DLL"
COMPANY_NAME="Microsoft Corporation" PRODUCT_NAME="Microsoft®
Windows® Operating System" FILE_VERSION="5.1.2600.2180
(xpsp_sp2_rtm.040803-2158)" ORIGINAL_FILENAME="kernel32"
INTERNAL_NAME="kernel32" LEGAL_COPYRIGHT="© Microsoft
Corporation. All rights reserved." VERFILEDATEHI="0x0"
VERFILEDATELO="0x0" VERFILEOS="0x40004" VERFILETYPE="0x2"
MODULE_TYPE="WIN32" PE_CHECKSUM="0xFF848" LINKER_VERSION="0x50001"
UPTO_BIN_FILE_VERSION="5.1.2600.2180"
UPTO_BIN_PRODUCT_VERSION="5.1.2600.2180" LINK_DATE="08/04/2004
07:56:36" UPTO_LINK_DATE="08/04/2004 07:56:36"
VER_LANGUAGE="English (United States) [0x409]" />
</EXE>
</DATABASE>
Any other ideas how to solve this problem?