1.菜单
import sys
from PyQt4 import QtCore, QtGui
class MyWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setWindowTitle('QtMenu')
self.resize(485, 300)
menubar = self.menuBar()
file = menubar.addMenu('&File')
file.addAction('Open')
file.addAction('Save')
file.addSeparator()
file.addAction('Close')
edit = menubar.addMenu('&Edit')
edit.addAction('Copy')
edit.addAction('Paste')
edit.addAction('Cut')
edit.addAction('Select All')
help = menubar.addMenu('&Help')
help.addAction('About')
app = QtGui.QApplication(sys.argv)
mywindow = MyWindow()
mywindow.show()
app.exec_()
qtMenu.py
2.菜单事件
import sys
from PyQt4 import QtGui, QtCore
class MyWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setWindowTitle('QtMenuAction')
self.resize(485, 300)
self.lbl = QtGui.QLabel('Menu Action')
self.lbl.setAlignment(QtCore.Qt.AlignCenter)
self.setCentralWidget(self.lbl)
menubar = self.menuBar()
self.file = menubar.addMenu('&File')
self.open = self.file.addAction('Open')
self.save = self.file.addAction('Save')
self.file.addSeparator()
self.close = self.file.addAction('Close')
self.connect(self.open, QtCore.SIGNAL('triggered()'), self.onOpen)
self.connect(self.save, QtCore.SIGNAL('triggered()'), self.onSave)
self.connect(self.close, QtCore.SIGNAL('triggered()'), self.onClose)
def onOpen(self):
self.lbl.setText('Menu Action: Open')
def onSave(self):
self.lbl.setText('Menu Action: Save')
def onClose(self):
self.lbl.setText('Menu Action: Close')
def contextMenuEvent(self, event):
self.file.exec_(event.globalPos())
app = QtGui.QApplication(sys.argv)
mywindow = MyWindow()
mywindow.show()
app.exec_()
qtMenuAction.py
3.消息框
import sys
from PyQt4 import QtGui, QtCore
class MyWindow(QtGui.QWidget):
def __init__(self):
QtGui.QWidget.__init__(self)
self.setWindowTitle('QtMessageBox')
self.resize(485, 300)
self.btn1 = QtGui.QPushButton('About')
self.btn2 = QtGui.QPushButton('About Qt')
self.btn3 = QtGui.QPushButton('Critical')
self.btn4 = QtGui.QPushButton('Information')
self.btn5 = QtGui.QPushButton('Question')
self.btn6 = QtGui.QPushButton('Warning')
grid = QtGui.QGridLayout()
grid.addWidget(self.btn1, 0, 0)
grid.addWidget(self.btn2, 0, 1)
grid.addWidget(self.btn3, 0, 2)
grid.addWidget(self.btn4, 1, 0)
grid.addWidget(self.btn5, 1, 1)
grid.addWidget(self.btn6, 1, 2)
self.setLayout(grid)
self.connect(self.btn1, QtCore.SIGNAL('clicked()'), self.onBtn1)
self.connect(self.btn2, QtCore.SIGNAL('clicked()'), self.onBtn2)
self.connect(self.btn3, QtCore.SIGNAL('clicked()'), self.onBtn3)
self.connect(self.btn4, QtCore.SIGNAL('clicked()'), self.onBtn4)
self.connect(self.btn5, QtCore.SIGNAL('clicked()'), self.onBtn5)
self.connect(self.btn6, QtCore.SIGNAL('clicked()'), self.onBtn6)
def onBtn1(self):
QtGui.QMessageBox.about(self, 'Qt', 'about')
def onBtn2(self):
QtGui.QMessageBox.aboutQt(self, 'Qt')
def onBtn3(self):
QtGui.QMessageBox.critical(self, 'Qt', 'critical', QtGui.QMessageBox.Abort, QtGui.QMessageBox.Retry, QtGui.QMessageBox.Ignore)
def onBtn4(self):
QtGui.QMessageBox.information(self, 'Qt', 'information')
def onBtn5(self):
QtGui.QMessageBox.question(self, 'Qt', 'question', QtGui.QMessageBox.Yes, QtGui.QMessageBox.No, QtGui.QMessageBox.Cancel)
def onBtn6(self):
QtGui.QMessageBox.warning(self, 'Qt', 'warinng', QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
app = QtGui.QApplication(sys.argv)
mywindow = MyWindow()
mywindow.show()
app.exec_()
pyMessageBox.py
4.标准对话框
import sys
from PyQt4 import QtGui, QtCore
class MyWindow(QtGui.QWidget):
def __init__(self):
QtGui.QWidget.__init__(self)
self.setWindowTitle('QtStandardDialog')
self.resize(485, 300)
self.lbl = QtGui.QLabel()
self.btn1 = QtGui.QPushButton('File')
self.btn2 = QtGui.QPushButton('Font')
self.btn3 = QtGui.QPushButton('Color')
grid = QtGui.QGridLayout()
grid.addWidget(self.lbl, 0, 0, 1, 3)
grid.addWidget(self.btn1, 1, 0)
grid.addWidget(self.btn2, 1, 1)
grid.addWidget(self.btn3, 1, 2)
self.setLayout(grid)
self.connect(self.btn1, QtCore.SIGNAL('clicked()'), self.onBtn1)
self.connect(self.btn2, QtCore.SIGNAL('clicked()'), self.onBtn2)
self.connect(self.btn3, QtCore.SIGNAL('clicked()'), self.onBtn3)
def onBtn1(self):
filename = QtGui.QFileDialog.getOpenFileName(self, 'open')
if filename:
self.lbl.setText(filename)
def onBtn2(self):
font, ok = QtGui.QFontDialog.getFont()
if ok:
self.lbl.setText(font.key())
def onBtn3(self):
color = QtGui.QColorDialog.getColor()
if color.isValid():
self.lbl.setText(color.name())
app = QtGui.QApplication(sys.argv)
mywindow = MyWindow()
mywindow.show()
app.exec_()
qtStandardDialog.py
5.自定义对话框
import sys
from PyQt4 import QtCore, QtGui
class MyDialog(QtGui.QDialog):
def __init__(self):
QtGui.QDialog.__init__(self)
self.lbl = QtGui.QLabel('Input:')
self.txt = QtGui.QLineEdit()
self.btn1 = QtGui.QPushButton('OK')
self.btn2 = QtGui.QPushButton('Cancel')
grid = QtGui.QGridLayout()
grid.addWidget(self.lbl, 0, 0)
grid.addWidget(self.txt, 0, 1)
grid.addWidget(self.btn1, 1, 0)
grid.addWidget(self.btn2, 1, 1)
self.setLayout(grid)
self.connect(self.btn1, QtCore.SIGNAL('clicked()'), self.onBtn1)
self.connect(self.btn2, QtCore.SIGNAL('clicked()'), self.onBtn2)
def onBtn1(self):
self.text = self.txt.text()
self.done(1)
def onBtn2(self):
self.done(0)
class MyWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setWindowTitle('QtDialog')
self.resize(485, 300)
self.btn = QtGui.QPushButton('Click Here')
self.setCentralWidget(self.btn)
self.connect(self.btn, QtCore.SIGNAL('clicked()'), self.onBtn)
def onBtn(self):
mydialog = MyDialog()
r = mydialog.exec_()
if r:
self.btn.setText(mydialog.text)
app = QtGui.QApplication(sys.argv)
mywindow = MyWindow()
mywindow.show()
app.exec_()
pyDialog.py