除了监听事件之外,根本不知道如何获得鼠标的位置,但是在事件队列为空的情况下,如何实现呢?
吡咯烷酮的文档建议使用sdl2.mouse.SDL_GetMouseState() (医生在这里),但是这个函数实际上需要要询问的游标的x,y坐标。同时,调用sdl2.mouse.SDL_GetCursor()返回一个游标对象,但我无法从它获得它的坐标(即。它只是包装一个C对象,所以它有一个空的.__dict__属性)。
我一直在尝试我能想到的一切,但我从来没有用C编程过。我想要生成的简单包装函数只是:
def mouse_pos(self):
            #  ideally, just return <some.path.to.mouse_x_y> 
            event_queue = sdl2.SDL_PumpEvents()
            state = sdl2.mouse.SDL_GetMouseState(None, None)  # just returns 0, so I tried the next few lines
            print state
            for event in event_queue:
                if event.type == sdl2.SDL_MOUSEMOTION:
            #  this works, except if the mouse hasn't moved yet, in which case it's none        
            return [event.x, event.y] 发布于 2015-01-16 07:22:27
SDL_GetMouseState()是SDL2 C函数的包装器。因此,您必须使用ctype从它检索值。原始SDL2函数接收两个指针(x和y)来存储光标位置。
下面的片段将为您做正确的事情:
import ctypes
...
x, y = ctypes.c_int(0), ctypes.c_int(0) # Create two ctypes values
# Pass x and y as references (pointers) to SDL_GetMouseState()
buttonstate = sdl2.mouse.SDL_GetMouseState(ctypes.byref(x), ctypes.byref(y))
# Print x and y as "native" ctypes values
print(x, y)
# Print x and y as Python values
print(x.value, y.value)`
发布于 2020-10-24 00:25:27
您还可以检查运动事件:
if event.type == sdl2.SDL_MOUSEMOTION:
    motion = event.motion
    print(motion.x, motion.xrel, motion.y, motion.yrel)https://stackoverflow.com/questions/27322219
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