From:	jrogers AT cascadenet DOT com (John D. Rogers)
Subject:	Re: Is there a way to avoid dialog boxes?
2 Jun 1998 13:35:18 -0700 :
Message-ID:	<3573EE7A.6783.cygnus.gnu-win32@cascadeinc.com>
References:	<001b01bd8d78$9eb4c180$834786a1 AT arch3 DOT empros DOT com>
Mime-Version:	1.0
To:	Geoff Hart <ghart AT siemens-psc DOT com>
Cc:	gnu-win32 AT cygnus DOT com

Geoff Hart wrote:
<stuff deleted>

>             system error dialog boxes!
> 
> Is there a way I can turn off error dialog boxes?  Things like
> "cygwinb19.dll not found in PATH ....", or "an exception has
> occurred ...".  These boxes popup on the NT server machine's
> screen, which doesn't help remote users.
> 

Hi Geoff.
 
There is a fn called SetErrorMode.  Prototype is as follows : 

UINT 
SetErrorMode(UINT uMode) 	// set of bit flags that specify
error-handling properties 


The bitflags you're looking for are SEM_NOOPENFILEERRORBOX, which has a
value of 0x8000, and SEM_NOGPFAULTERRORBOX (0x0002).  There are other
possible values, which can be determined by consulting any
reasonbly-complete API reference.
 
If you have the SEM_NOOPENFILEERRORBOX flag set when you call
SetErrorMode, you're telling the OS to return an error to you, and you
(i.e. your application) will handle it.  Note that the documentation I
consulted (msvc 4.x), stated that with SEM_NOGPFAULTERRORBOX, the
application needed to be a debugger that is coded to handle such
exceptions via an exception-handling mechanism.
 
I hope you find this useful!
 
John D. Rogers
Software Engineer, Cascade Systems, Inc.
jrogers AT cascadenet DOT com
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