c++ - How can I check if signal present in object? -

i can't find way build-in way someobject->signalpresent(somesignal). maybe missed something. know can in c++ using sfinae, there should same ability in qt.

there's qmetaobject::indexofsignal(). code using like:

if (someqobject->metaobject()->indexofsignal("somesignal(qstring)") != -1) {     // has signal     ... } else {     // doesn't have signal     ... } 

note requirements regarding signature normalization described in documentation, e.g. "somesignal(const qstring&)" won't work.