__init__.py 文件源码

def set_exclusive_mouse(self, exclusive=True):
        if self._exclusive_mouse == exclusive and \
           self._exclusive_mouse_focus == self._has_focus:
            return

        if exclusive and self._has_focus:
            # Move mouse to the center of the window.
            self._reset_exclusive_mouse_screen()
            x, y = self._exclusive_mouse_screen
            self.set_mouse_position(x, y, absolute=True)

            # Clip to client area, to prevent large mouse movements taking
            # it outside the client area.
            rect = RECT()
            _user32.GetClientRect(self._view_hwnd, byref(rect))
            _user32.MapWindowPoints(self._view_hwnd, HWND_DESKTOP,
                                    byref(rect), 2)
            _user32.ClipCursor(byref(rect))
        else:
            # Release clip
            _user32.ClipCursor(None)

        self._exclusive_mouse = exclusive
        self._exclusive_mouse_focus = self._has_focus
        self.set_mouse_platform_visible()