1. -ext WixUIExtension -ext WixUtilExtension
2. <Property Id="WIXUI_EXITDIALOGOPTIONALCHECKBOXTEXT" Value="Launch My Application Name" /> in <Product>
3. <Property Id="WixShellExecTarget" Value="[#myapplication.exe]" />
<CustomAction Id="LaunchApplication" BinaryKey="WixCA" DllEntry="WixShellExec" Impersonate="yes" />
4. <Publish Dialog="ExitDialog"
4. <Publish Dialog="ExitDialog" Value="LaunchApplication">WIXUI_EXITDIALOGOPTIONALCHECKBOX = 1 and NOT Installed</Publish>
Control="Finish".
Event="DoAction".
4. <Publish Dialog="ExitDialog" in <UI> after <UIRef Id="WixUI_<>" />