Main Use connect Error: without object [How to Solve]

//mytest::mytestShowChanged Note that the function cannot be added (), otherwise an error is reported: C:\Users\xutie\Desktop\qtthread\main.cpp:36: error: cannot call member function 'void mythread1::mythread1show()' without object
QObject::connect(&mytest1,&mytest::mytestShowChanged(),&mythread1Object1,&mythread1::mythread1show());

Modify as:
QObject::connect(&mytest1,&mytest::mytestShowChanged,&mythread1Object1,&mythread1::mythread1show);

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