Вот краткий пример, подобный примеру, который я привел в вашем предыдущем вопросе:
from PyQt4.QtGui import QApplication, QMainWindow, QPushButton, \
QWidget, QLabel
from PyQt4.QtCore import pyqtSignal
class HoverButton(QPushButton):
mouseHover = pyqtSignal(bool)
def __init__(self, parent=None):
QPushButton.__init__(self, parent)
self.setMouseTracking(True)
def enterEvent(self, event):
self.mouseHover.emit(True)
def leaveEvent(self, event):
self.mouseHover.emit(False)
class MainWindow(QMainWindow):
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.button = HoverButton(self)
self.button.setText('Button')
self.label = QLabel('QLabel uses QFrame...', self)
self.label.move(40, 40)
self.label.setVisible(False)
self.button.mouseHover.connect(self.label.setVisible)
def startmain():
app = QApplication(sys.argv)
mainwindow = MainWindow()
mainwindow.show()
sys.exit(app.exec_())
if __name__ == "__main__":
import sys
startmain()