My understanding is that the installation will proceed when the last open 
dialog ends with a Publish Event="EndDialog" Value="Return".
 
> From: stephane...@hotmail.com
> To: wix-users@lists.sourceforge.net
> Date: Mon, 1 Jul 2013 23:02:22 -0600
> Subject: [WiX-users] WiX v3.7 - Publish install event
> 
> I am creating a WiX installer, and have configured it to show a prompt when 
> the user clicks 'install' if the user is missing a certain file. I added this 
> line in order to link my custom prompt to the rest of my dialogs (My prompt 
> is called Custom_Cancel):
> <Publish Dialog="VerifyReadyDlg" 
>          Control="Install" 
>          Event="SpawnDialog" 
>          Value="Custom_Cancel" 
>          Order="5">
>      <![CDATA[WixUI_InstallMode = "InstallClient" AND REMINDEX_SHORTCUT = 
> ""]]></Publish>
> If the user is missing a certain file, when they press install, the prompt 
> pops up. If the user wants to cancel the installation, they press cancel, and 
> if they want to continue they press OK. When the user presses OK, I would 
> like the installation to begin, as if the user had pressed "install".
> However, now that I have changed the behaviour of the install button to allow 
> the prompt to pop up, I've lost the link to the 'install event'. I looked in 
> the VerifyReadyDlg source code to find what event gets published when the 
> 'install' button is pressed, but I couldn't find anything.
> I tried a sketchy fix in which I attempted to set a property with the OK 
> button. I tried making the prompt only pop up if this property had not been 
> set, so that the user could press OK, then 'install', which would now start 
> the installation. I couldn't get that to work though.
> Does anyone know the event I should fire if I want the installation to start 
> when OK is clicked?
> Any suggestions would be greatly appreciated                                  
>   
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