python - How to get mouse position using PySDL2? -

do not understand @ how achieve getting mouse's position except listening events, in circumstance event queue empty, how achieved?

the documentation pysdl pygamers suggests using sdl2.mouse.sdl_getmousestate() (doc here) function actially requires x, y coordinates of cursor want ask about. meanwhile, calling sdl2.mouse.sdl_getcursor() returns cursor object, can find no way coordinates (ie. it's wrapping c object, has empty .__dict__ attribute).

i have been trying can think of i've never programmed in c before. simple wrapper function i'm trying produce just:

def mouse_pos(self):             #  ideally, return <some.path.to.mouse_x_y>              event_queue = sdl2.sdl_pumpevents()             state = sdl2.mouse.sdl_getmousestate(none, none)  # returns 0, tried next few lines             print state             event in event_queue:                 if event.type == sdl2.sdl_mousemotion:             #  works, except if mouse hasn't moved yet, in case it's none                     return [event.x, event.y]  

sdl_getmousestate() wrapper of sdl2 c function. have use ctypes retrieve values it. original sdl2 function receives 2 pointers (x , y) store cursor position.

the snippet below right thing you:

import ctypes ... x, y = ctypes.c_int(0), ctypes.c_int(0) # create 2 ctypes values # pass x , y references (pointers) sdl_getmousestate() buttonstate = sdl2.mouse.sdl_getmousestate(ctypes.byref(x), ctypes.byref(y)) # print x , y "native" ctypes values print(x, y) # print x , y python values print(x.value, y.value) 

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