Linux窗口程序设计 Qt4精彩实例分析 pyqt实现

实例2 标准对话框的使用

from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys

class StandardDialog(QDialog):
    def __init__(self,parent = None):
        super(StandardDialog,self).__init__(parent)
       
        self.filePushButton = QPushButton("File Dialog")
        self.fileLineEdit   = QLineEdit()
        self.fileLineEdit.setText("Hello")

        self.colorPushButton = QPushButton("Color Dialog")  
        self.colorFrame = QFrame()
        self.colorFrame.setFrameShape(QFrame.Box)
        self.colorFrame.setAutoFillBackground(True)
       
        self.fontPushButton = QPushButton("Font Dialog")
        self.fontLineEdit   = QLineEdit()
        self.fontLineEdit.setText("Font Dialog")
       
        gridlayout = QGridLayout()
        gridlayout.addWidget(self.filePushButton,0,0)
        gridlayout.addWidget(self.fileLineEdit,0,1)
        gridlayout.addWidget(self.colorPushButton,1,0)
        gridlayout.addWidget(self.colorFrame,1,1)
        gridlayout.addWidget(self.fontPushButton,2,0)
        gridlayout.addWidget(self.fontLineEdit,2,1)
       
        self.connect(self.filePushButton,SIGNAL("clicked()"),self.openFileDialog)
        self.connect(self.colorPushButton, SIGNAL("clicked()"),self.openColorDialog)
        self.connect(self.fontPushButton, SIGNAL("clicked()"),self.openFontDialog)
       
        self.setLayout(gridlayout)
       
    def openFileDialog(self):
        s = QFileDialog.getOpenFileName(None, "open file dialog")
        self.fileLineEdit.setText(s)
    def openColorDialog(self):
        color = QColorDialog.getColor(Qt.blue)
        self.colorFrame.setPalette(QPalette(color))
    def openFontDialog(self):
        font,ok = QFontDialog.getFont()
        self.fontLineEdit.setFont(font)
                   
       
if __name__ == '__main__':
    app = QApplication(sys.argv)
    sd = StandardDialog()
    sd.show()
    app.exec_()