c++ - How can I do a callback from FireBreath to JavaScript -

code sample:

bool mirrarornaments::onmousedown(fb::mousedownevent *evt, fb::pluginwindow *)  {   if(evt->m_btn == fb::mousebuttonevent::mousebutton_left)    {     //from here need function in javascript argument of fb::variant_list_of(evt->m_x)(evt->m_y));    } } 

is possible?
trying return variant_list use in js,

but need bool anyway cos of:

begin_plugin_event_map()  eventtype_case(fb::mousedownevent, onmousedown, fb::pluginwindow)        end_plugin_event_map() 

to have callback javascript first need pass callback input jsapi plugins.

you can follows:

in plugintestapi.cpp

registermethod("setcallback", make_method(this, &plugintestapi::setcallback));  int plugintestapi::setcallback(const fb::jsobjectptr& callback) {   m_callback = callback; } 

in plugintestapi.h

class plugintestapi  {   fb::jsobjectptr* m_pcallback;   int setcallback(const fb::jsobjectptr& callback); 

and in javascript pass function when setup:

 function myjscallback (params)  {  }   myplugin.setcallback(myjscallback); 

then can call callback c++ code:

bool mirrarornaments::onmousedown(fb::mousedownevent *evt, fb::pluginwindow *)  {   if(evt->m_btn == fb::mousebuttonevent::mousebutton_left)    {     //from here need function in javascript argument of         m_pcallback->invoke(fb::variant_list_of(evt->m_x)(evt->m_y));    } }