Qt Quick Controls 2 hangs when overwriting Button.qml -

i'm trying implement own style , want override built-in objects. here's i'm doing:

// main.cpp qquickstyle::setstyle("mystyle"); 

and

// mystyle/button.qml import qtquick 2.5 import qtquick.controls 2.1 controls  controls.button {     background: rectangle {         color: "green"     } } 

and

// qml.qrc <rcc>     <qresource prefix="/">         <file>main.qml</file>         <file>mystyle/checkbox.qml</file>     </qresource> </rcc> 

according docs believe should work automagically using file selectors.

however, app hangs on startup. guess fall recursive import. how do correctly?

the qt quick controls 2 styling system based on qml type registration. when run app mystyle, type known qtquick.controls.button is mystyle/button.qml. therefore mystyle/button.qml cannot inherit qtquick.controls.button. cannot inherit itself.

this same writing following c++:

// button.h #include "button.h" class button : public button {}; 

a bit radicalized, easy understand analogy. :)

what can have (my)button.qml somewhere, let inherit qtquick.controls.button, , don't register qt quick controls 2 import folder. call "customizing qt quick controls 2".