I read an article http://wix.sourceforge.net/manual-wix3/run_program_after_install.htm and it works.
<Property Id="WIXUI_EXITDIALOGOPTIONALCHECKBOXTEXT" Value="Launch MS" />
<Property Id="WixShellExecTarget" Value="[#MainExe]" />
<CustomAction Id="LaunchApplication" BinaryKey="WixCA" DllEntry="WixShellExec" Impersonate="yes" />
<UI Id="MyWixUI_Mondo">
<UIRef Id="WixUI_Minimal" />
<Publish Dialog="ExitDialog" Control="Finish" Event="DoAction" Value="LaunchApplication">WIXUI_EXITDIALOGOPTIONALCHECKBOX = 1 and NOT Installed</Publish>
<UIRef Id="WixUI_ErrorProgressText"/>
</UI>
But I want to have checked checkbox by default, not unchecked. How to do it