Exception handling is failing when exception is thrown in windows API

Question

I am calling a windows function MagSetWindowSource(windows magnifier API). For some reason it is throwing an exception. I want to catch this exception but I am unable to do so. I tried

__try
{

    MagSetWindowSource()

}
__except(EXCEPTION_EXECUTE_HANDLER)
{
}

and showed an unhandled exception was encountered during a user callback message.I tried all C++ exceptions flags (/EHa, /EHSc, etc) in Visual Studio. Any help in this matter is appreciated.