At this time, it's not possible for Patch My PC to automatically associated dependencies with third-party applications. I have merged this request with that feature request.
For now, you can publish the C++ application as a dependency in ConfigMgr/Intune and our solution will copy this dependency relationship forward if either app updates.
If you would like guidance on how to achieve this, kindly open a support case: https://patchmypc.com/support