Hello,
My config:
Windows 7 Pro 64 bits
python 3.6 64 bits and python 3.4 32 bits
pyglet 1.2.4
I tried the following code:
import pyglet
window = pyglet.window.Window()
@window.event
def on_mouse_motion(x, y, dx, dy):
print("Move x: {x}, y:{y}, dx:{dx}, dy:{dy}".format(x=x, y=y, dx=dx,
dy=dy))
@window.event
def on_mouse_drag(x, y, dx, dy, buttons, modifiers):
print("Drag x: {x}, y:{y}, dx:{dx}, dy:{dy}".format(x=x, y=y, dx=dx,
dy=dy))
window.set_exclusive_mouse(True)
pyglet.app.run()
I don't see the problem you describe. I only get negative dx when I move to
the left and positive when moving to the right.
Left movements:
Move x: 319, y:240, dx:-1, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:241, dx:-2, dy:1
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 318, y:241, dx:-2, dy:1
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:241, dx:-1, dy:1
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 317, y:240, dx:-3, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 317, y:240, dx:-3, dy:0
Move x: 318, y:241, dx:-2, dy:1
Move x: 317, y:240, dx:-3, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, *dx:1*, dy:0
Move x: 318, y:241, dx:-2, dy:1
Move x: 318, y:240, dx:-2, dy:0
Move x: 317, y:240, dx:-3, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 319, y:240, dx:-1, dy:0
Move x: 318, y:240, dx:-2, dy:0
Move x: 319, y:240, dx:-1, dy:0
You'll notice one occurence of a right dx but in general I'm getting my
movement to the left as expected.
Looking at the code, I can see that in exclusive mode, the WM_MOUSEMOVE is
specifically ignored. In pyglet/window/win32/__init__.py line 711
@ViewEventHandler
@Win32EventHandler(WM_MOUSEMOVE)
def _event_mousemove(self, msg, wParam, lParam):
x, y = self._get_location(lParam)
if (x, y) == self._exclusive_mouse_client:
# Ignore the event caused by SetCursorPos
self._mouse_x = x
self._mouse_y = y
return 0
y = self._height - y
if self._exclusive_mouse and self._has_focus:
# Reset mouse position (so we don't hit the edge of the screen).
_x, _y = self._exclusive_mouse_screen
self.set_mouse_position(_x, _y, absolute=True)
dx = x - self._mouse_x
dy = y - self._mouse_y
if not self._tracking:
# There is no WM_MOUSEENTER message (!), so fake it from the
# first WM_MOUSEMOVE event after leaving. Use self._tracking
# to determine when to recreate the tracking structure after
# re-entering (to track the next WM_MOUSELEAVE).
self._mouse_in_window = True
self.set_mouse_platform_visible()
self.dispatch_event('on_mouse_enter', x, y)
self._tracking = True
track = TRACKMOUSEEVENT()
track.cbSize = sizeof(track)
track.dwFlags = TME_LEAVE
track.hwndTrack = self._view_hwnd
_user32.TrackMouseEvent(byref(track))
# Don't generate motion/drag events when mouse hasn't moved. (Issue
# 305)
if self._mouse_x == x and self._mouse_y == y:
return 0
self._mouse_x = x
self._mouse_y = y
buttons = 0
if wParam & MK_LBUTTON:
buttons |= mouse.LEFT
if wParam & MK_MBUTTON:
buttons |= mouse.MIDDLE
if wParam & MK_RBUTTON:
buttons |= mouse.RIGHT
if buttons:
# Drag event
modifiers = self._get_modifiers()
self.dispatch_event('on_mouse_drag',
x, y, dx, dy, buttons, modifiers)
else:
# Motion event
self.dispatch_event('on_mouse_motion', x, y, dx, dy)
return 0
I've highlighted in blue the code relevant to ignoring SetCursorPos.
Obviously this does not seem to work on your machine. It would be
interesting to add some print statements in that part of the code to check
if indeed the SetCursorPos is ignored.
Maybe using my little test code above would prove useful.
Let us know how this goes.
Dan
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