これは、PyQt4 を使用した Windows でのソリューションです。
Front ウィジェット (Windows では winEvent) の eventFilter をオーバーライドしてから、イベントを Back ウィンドウに転送する必要があります。
完全にはわかりませんが、他のプラットフォームで使用できる同様のアプローチがあるはずです (winEvent の代わりに、おそらく x11Event?)
幸運を!
from PyQt4 import QtCore, QtGui
import win32api, win32con, win32gui, win32ui
class Front(QtGui.QPushButton):
def __init__(self,text="",whndl=None):
super(Front,self).__init__(text)
self.pycwnd = win32ui.CreateWindowFromHandle(whndl)
# install an event filter for Windows' messages. Forward messages to
# the other HWND
def winEvent(self,MSG):
# forward Left button down message to the other window. Not sure
# what you want to do exactly, so I'm only showing a left button click. You could
if MSG.message == win32con.WM_LBUTTONDOWN or \
MSG.message == win32con.WM_LBUTTONUP:
print "left click in front window"
self.pycwnd.SendMessage(MSG.message, MSG.wParam, MSG.lParam)
return True, 0 # tells Qt to ignore the message
return super(Front,self).winEvent(MSG)
class Back(QtGui.QPushButton):
def __init__(self,text=""):
super(Back,self).__init__(text)
self.clicked.connect(self.onClick)
def onClick(self):
print 'back has been clicked'
def main():
a = QtGui.QApplication([])
back = Back("I'm in back...")
back.setWindowTitle("I'm in back...")
back.show()
# Get the HWND of the window in back (You need to use the exact title of that window)
whndl = win32gui.FindWindowEx(0, 0, None, "I'm in back...")
# I'm just making the front button bigger so that it is obvious it is in front ...
front = Front(text="*____________________________*",whndl=whndl)
front.setWindowOpacity(0.8)
front.show()
a.exec_()
if __name__ == "__main__":
main()