Can I open a chm Help file from another chm file

R

Roger Sharp

Windows XP seem to prevent opening a Help file (.chm)
from another chm file, i.e., have two help viewers open
at the same time. It worked fine in Window 2000. Is there
a way around this problem?

Thanks,
Roger
 
P

Pete Lees

Roger,
Windows XP seem to prevent opening a Help file (.chm)
from another chm file, i.e., have two help viewers open
at the same time. It worked fine in Window 2000.

This shouldn't normally be a problem. However, are the help files
stored on a network drive? With version 1.4 of the HTML Help viewer
components, Microsoft introduced some security restrictions on the use
of certain commands in help files -- including the Shortcut command
used to open external files, which now only works in help files stored
on a local drive. See these articles for more information:

http://support.microsoft.com/?kbid=323180
http://helpware.net/htmlhelp/hh_info.htm#hh14

Another possibility is that one help file is trying to use the
window.showHelp() method to open the second file. This method was
disabled by the 810847 Cumulative Patch for Internet Explorer, but can
be restored by installing Critical Update 811630
(http://support.microsoft.com/?kbid=811630).

A third possibility is that the registry entries for the HTML Help
ActiveX control are corrupted, resulting in broken Shortcut commands.
This problem is described in Knowledge Base article 822989
(http://support.microsoft.com/?kbid=822989), and the solution is once
again to install Critical Update 811630.
 

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