Thanks again, Rob.

To mitigate it, we are thinking about displaying the launch condition message 
one after another. But I don't think it can be done using launch condition 
message box since first launch condition will just terminate the install. But 
are there other message box type element in WIX I can call at the launch time 
to display the message one after another and use launch condition without 
message box to terminate the install?

Bo

-----Original Message-----
From: Rob Mensching [mailto:rob.mensch...@microsoft.com] 
Sent: Friday, February 06, 2009 2:22 PM
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] display pre-req messages

Hmm, good question.  Never had a message that stressed it.  Wouldn't surprise 
me if the Windows Installer is just calling ::MessageBox().

-----Original Message-----
From: Bo Cordell [mailto:bcord...@microsoft.com] 
Sent: Friday, February 06, 2009 13:35
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] display pre-req messages

Thanks Rob.

Now I have it working. But when I set the condition message, the message box is 
too small to display the whole text. Is the launch condition message box fixed 
size? Doesn't it adjust to the content length?

Bo
-----Original Message-----
From: Rob Mensching [mailto:rob.mensch...@microsoft.com] 
Sent: Thursday, February 05, 2009 7:04 PM
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] display pre-req messages

SetProperty element can be conditionalized.

-----Original Message-----
From: Bo Cordell [mailto:bcord...@microsoft.com] 
Sent: Thursday, February 05, 2009 18:36
To: wix-users@lists.sourceforge.net
Subject: [WiX-users] display pre-req messages

In my Wix code, I need to check 3 pre-reqs and display all possible 
combinations of missing items at once. Without a custom action, what is the 
best way to do it?

 I thought I can set each condition (which is combination of Boolean 
operations) to a property and then enumerate the 3 property values and display 
the message, but I couldn't figure out how to set a condition value (which is 
Boolean) to a property. Is there a way to do it in Wix?

Thanks.
Bo
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