I have one last problem before my installer is completely working:

I have a custom EXIT dialog that I created called MyExitDialog that contains
an extra button that spawns a custom dialog to gather application settings
from the user to write into the App.Config file that was deployed and/or
existed during installation or repair.

The dialog does its job, but unfortunately it also displays (and does its
job) after an application has been removed with the installer, which is
useless, of course since there's no more app.config file to care about on a
removal of the application.

I see in the Publish elements how to conditionally control what a button *
does*, but how do you conditionally control when a button *shows itself* in
its dialog?

If this is impossible, how can I force the installer to display the standard
WIX ExitDialog instead of MyExitDialog in the case of a REMOVE operation
(vs. repair or new installation?).

my MyExitDialog definition is as follows, and the Control with
Id="ApplicationSettings" is my button I'd like to hide on product removals:
================================
<Dialog Id="MyExitDialog" Width="370" Height="270"
Title="!(loc.ExitDialog_Title)">
        <Control Id="Finish" Type="PushButton" X="224" Y="243" Width="56"
Height="17" Default="yes" Cancel="yes" Text="!(loc.WixUIFinish)" />
        <!-- The following Control allows us to go beyond finish to do some
settings modifications -->
        <Control Id="ApplicationSettings" Type="PushButton" X="94" Y="243"
Width="130" Height="17" Default="no" Cancel="no" Text="Modify Application
Settings" ></Control>
        <Control Id="Cancel" Type="PushButton" X="304" Y="243" Width="56"
Height="17" Disabled="yes" Text="!(loc.WixUICancel)" />
        <Control Id="Bitmap" Type="Bitmap" X="0" Y="0" Width="370"
Height="234" TabSkip="no" Text="!(loc.ExitDialogBitmap)" />
        <!-- <Control Id="Back" Type="PushButton" X="224" Y="243" Width="56"
Height="17" Disabled="yes" Text="!(loc.WixUIBack)" /> -->
        <Control Id="BottomLine" Type="Line" X="0" Y="234" Width="370"
Height="0" />
        <Control Id="Description" Type="Text" X="135" Y="70" Width="220"
Height="40" Transparent="yes" NoPrefix="yes" Text=" Click the Finish button
to exit the Setup Wizard. Alternatively, Click the Modify Application
Settings button to alter the behavior of the application." />
        <Control Id="Title" Type="Text" X="135" Y="20" Width="220"
Height="60" Transparent="yes" NoPrefix="yes" Text="!(loc.ExitDialogTitle)"
/>
        <Control Id="OptionalText" Type="Text" X="135" Y="110" Width="220"
Height="80" Transparent="yes" NoPrefix="yes" Hidden="yes"
Text="[WIXUI_EXITDIALOGOPTIONALTEXT]">
          <Condition Action="show">WIXUI_EXITDIALOGOPTIONALTEXT AND NOT
Installed</Condition>
        </Control>
        <Control Id="OptionalCheckBox" Type="CheckBox" X="135" Y="190"
Width="220" Height="40" Hidden="yes"
Property="WIXUI_EXITDIALOGOPTIONALCHECKBOX" CheckBoxValue="1"
Text="[WIXUI_EXITDIALOGOPTIONALCHECKBOXTEXT]">
          <Condition Action="show">WIXUI_EXITDIALOGOPTIONALCHECKBOXTEXT AND
NOT Installed</Condition>
        </Control>
      </Dialog>
================================

Thanks again,

Rimer
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