#QFontDialog
import sys
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class QFontDialogDemo(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle('QFontDialog Demo')
layout = QVBoxLayout(self)
self.button1 = QPushButton()
self.button1.setText('select font')
self.button1.clicked.connect(self.buttonClick)
self.label1 = QLabel('test font')
layout.addWidget(self.button1)
layout.addWidget(self.label1)
def buttonClick(self):
font,bl = QFontDialog.getFont() #打开选择字体对话框 getFont
if bl:
self.label1.setFont(font) #设置字体 setFont
if __name__ == '__main__':
app = QApplication(sys.argv)
main = QFontDialogDemo()
main.show()
sys.exit(app.exec_())
#QColorDialog
import sys
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class QColorDialogDemo(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle('QColorDialogDemo')
self.resize(300,100)
layout = QVBoxLayout(self)
self.button1 = QPushButton()
self.button1.setText('select color')
self.button1.clicked.connect(self.buttonClick)
self.button2 = QPushButton()
self.button2.setText('select bg color')
self.button2.clicked.connect(self.button2Click)
self.label1 = QLabel('test color')
self.label1.setAlignment(Qt.AlignCenter)
layout.addWidget(self.button1)
layout.addWidget(self.button2)
layout.addWidget(self.label1)
def buttonClick(self):
color = QColorDialog.getColor() #打开选择字体对话框 getFont
p = QPalette() #创建调色板
p.setColor(QPalette.WindowText,color)#给调色板上色 这里设置调色板的WindowText
self.label1.setPalette(p)#给label 控件设置调色板
def button2Click(self):
color = QColorDialog.getColor() #打开选择字体对话框 getFont
p = QPalette() #创建调色板
p.setColor(QPalette.Window,color)#给调色板上色 这里设置调色板的Window
self.label1.setAutoFillBackground(True) #增加一个自动填充背景色为真
self.label1.setPalette(p)#给label 控件设置调色板
if __name__ == '__main__':
app = QApplication(sys.argv)
main = QColorDialogDemo()
main.show()
sys.exit(app.exec_())
#QFileDialog 演示
import sys
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class QFileDialogDemo(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle('QFileDialogDemo')
self.resize(300,500)
layout = QVBoxLayout(self)
self.button1=QPushButton('open image')
self.button1.clicked.connect(self.loadImage)
layout.addWidget(self.button1)
self.label = QLabel('label')
layout.addWidget(self.label)
self.button2 = QPushButton('open file')
self.button2.clicked.connect(self.loadFile)
layout.addWidget(self.button2)
self.textEdit = QTextEdit()
layout.addWidget(self.textEdit)
def loadImage(self):
fname,_ = QFileDialog.getOpenFileName(self,'open file','.','image file(*.jpg *.png)')
self.label.setPixmap(QPixmap(fname))
def loadFile(self):
dialog = QFileDialog()
dialog.setFileMode(QFileDialog.AnyFile)
dialog.setFilter(QDir.Files)
if dialog.exec():
filenames = dialog.selectedFiles()
f = open(filenames[0],'r')
with f:
data = f.read()
self.textEdit.setText(data)
if __name__ == '__main__':
app = QApplication(sys.argv)
main = QFileDialogDemo()
main.show()
sys.exit(app.exec_())
