您好我的问题与此相关:PyQT4 WheelEvent
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import sys
class Main(QWidget):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
layout = QHBoxLayout(self)
layout.addWidget(Scroll(self))
class Scroll(QScrollArea):
def __init__(self, parent=None):
super(Scroll, self).__init__(parent)
self.parent = parent
def wheelEvent(self, event):
super(Scroll, self).wheelEvent(event)
print "wheelEvent", event.delta()
newHeight = self.parent.geometry().height() - event.delta()
width = self.parent.geometry().width()
self.parent.resize(width, newHeight)
app = QApplication(sys.argv)
main = Main()
main.show()
sys.exit(app.exec_())
我的Scroll类是在Qt Designer中创建的,我无法访问它
是否有机会访问Scroll类的PyQT WheelEvent,但是在Main类中?
答案 0 :(得分:0)
使用event-filter:
class Main(QWidget):
def __init__(self, parent=None):
...
self.scroll.installEventFilter(self)
def eventFilter(self, source, event):
if event.type() == QEvent.Wheel and source is self.scroll:
print "wheelEvent", event.delta()
newHeight = self.geometry().height() - event.delta()
width = self.geometry().width()
self.resize(width, newHeight)
# return True to consume the event
return False
return super(Main, self).eventFilter(source, event)