Python/pyqt5/CODE/元件使用範例/進階範例/qt05_QScrollBar.py

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# -*- coding: utf-8 -*-
'''
簡介
PyQT5中QScrollBar範例
'''
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
hbox = QHBoxLayout( )
self.l1 = QLabel("拖動滑塊改變顏色")
self.l1.setFont(QFont("Arial",16))
hbox.addWidget(self.l1)
self.s1 = QScrollBar()
self.s1.setMaximum(255)
self.s1.sliderMoved.connect(self.sliderval)
self.s2 = QScrollBar()
self.s2.setMaximum(255)
self.s2.sliderMoved.connect(self.sliderval)
self.s3 = QScrollBar()
self.s3.setMaximum(255)
self.s3.sliderMoved.connect(self.sliderval)
hbox.addWidget(self.s1)
hbox.addWidget(self.s2)
hbox.addWidget(self.s3)
self.setGeometry(300, 300, 300, 200)
self.setWindowTitle('QScrollBar範例')
self.setLayout( hbox )
def sliderval(self):
print( self.s1.value(),self.s2.value(), self.s3.value() )
palette = QPalette()
c = QColor(self.s1.value(),self.s2.value(), self.s3.value(),255)
palette.setColor(QPalette.Foreground,c)
self.l1.setPalette(palette)
if __name__ == '__main__':
app = QApplication(sys.argv)
demo = Example()
demo.show()
sys.exit(app.exec_())