[wix-users] How to SpawnDialog and continue wizard

[Persson, Magnus (SE-TLX)]

I have a dialog where the users selection is verified when the Next 
button is clicked.

         <Control Id="Next" Type="PushButton" X="236" Y="243" Width="56" 
Height="17" Default="yes" Text="!(loc.ButtonNext)" >
           <Publish Event="DoAction" Value="CheckDatabaseFolder" 
Order="1">1</Publish>
           <Publish Event="SpawnDialog" Value="CopyDatabaseDlg" 
Order="2">DBEXISTS="1"</Publish>
           <Publish Event="NewDialog" Value="InstallDlg" 
Order="3">DBEXISTS="0"</Publish>
         </Control>

So when *Next* is clicked a custom action will check the existence of a 
file and set the property DBEXISTS to either 1 or 0.
If the property is 1 then a question dialog is shown so the user can 
select to keep the existing file or overwrite it.
That dialog will set a new property that will be a condition for the 
component that copies the original file.
The dialog will also reset the DBEXISTS property in a hope to fire the 
InstallDlg dialog when closed but this will not work.

If I set the condition for InstallDlg to 1 then the SpawnDialog event 
will never fire even though DBEXISTS is 1.

So, my question is: how can I spawn a question dialog and then continue 
the wizard afterwards?

/Magnus