Calling static function through QMetaObject

walteste

Is there a way to invoke a static method of a class without supplying an object to the invokeMethod(...) of the QMetaObject?

jsulm

Why do you want to use invokeMethod() to call a static method?

walteste

@jsulm Well, because the method that I would like to invoke would not require an instance and therefore a static method is what I prefer. Is there any way to invoke a static method without an instance?

The QMetaObkect::method(index) function also returns me the invokable static methods.

mrjj

hi
Are we talking normal static functions?
http://www.tutorialspoint.com/cplusplus/cpp_static_members.htm

so you just call it like
ClassName::static_method()
?

walteste

@mrjj Yes, a standard C++ static member function which is defined with Q_INVOKABLE. I will not only know at runtime which staticMetaObject I have to call this function. Therefore I can not use ClassName::static_method().

mrjj

@walteste
Ok, so this is also regarding calling / make available to QML ? / scripting ?

walteste

@mrjj Not necessarily, I just want sometimes to call a static function of different static meta objects without first using the newInstance to create an instance for performance reasons.

Chris Kawa

This is not possible with current API. Take a look at the generated moc_*.cpp file. The methods called via meta objects are always routed through YourClass::qt_static_metacall and it always takes an object pointer.

walteste

@Chris-Kawa Thanks for the information provided. Then I need to re-design my implementation accordingly to this limitation.