如果您想跟踪鼠标何时进入或离开小部件,您可以使用以下内容:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from PyQt4 import QtCore, QtGui
class mainwindow(QtGui.QWidget):
def __init__(self, parent=None):
super(mainwindow, self).__init__(parent)
def enterEvent(self, event):
print "Mouse Entered"
return super(mainwindow, self).enterEvent(event)
def leaveEvent(self, event):
print "Mouse Left"
return super(mainwindow, self).enterEvent(event)
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
main = mainwindow()
main.show()
sys.exit(app.exec_())
如果您只想检查鼠标是否在小部件上,您可以使用该QWidget::underMouse ()
功能:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from PyQt4 import QtCore, QtGui
class mainwindow(QtGui.QWidget):
def __init__(self, parent=None):
super(mainwindow, self).__init__(parent)
self.button = QtGui.QPushButton("Check Mouse in 3 seconds")
self.button.clicked.connect(self.on_button_clicked)
self.layout = QtGui.QHBoxLayout(self)
self.layout.addWidget(self.button)
def mouseReleaseEvent(self, event):
if self.underMouse():
print "Do something"
return super(mainwindow, self).mouseReleaseEvent(event)
@QtCore.pyqtSlot()
def on_button_clicked(self):
QtCore.QTimer.singleShot(3000, self.checkMouse)
def checkMouse(self):
print "Under Mouse: {0}".format(self.underMouse())
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
main = mainwindow()
main.show()
sys.exit(app.exec_())
另一种方法是检查鼠标的位置是否在小部件的内部几何图形内:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from PyQt4 import QtCore, QtGui
class mainwindow(QtGui.QWidget):
def __init__(self, parent=None):
super(mainwindow, self).__init__(parent)
self.setMouseTracking(True)
def mouseReleaseEvent(self, event):
posMouse = event.pos()
if self.rect().contains(posMouse):
print "Under Mouse"
return super(mainwindow, self).mouseReleaseEvent(event)
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
main = mainwindow()
main.show()
main.resize(200, 200)
sys.exit(app.exec_())