这里提供一个使用PyQt4在Windows上的解决方案。
您需要在前端小部件中重写eventFilter(在Windows上为winEvent),然后将事件转发到后端窗口。
我不完全确定,但可能有类似的方法可用于其他平台(例如,使用x11Event代替winEvent)。
祝好运!
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)
def winEvent(self,MSG):
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
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()
whndl = win32gui.FindWindowEx(0, 0, None, "I'm in back...")
front = Front(text="*____________________________*",whndl=whndl)
front.setWindowOpacity(0.8)
front.show()
a.exec_()
if __name__ == "__main__":
main()