Linux窗口程序设计 Qt4精彩实例分析 pyqt实现

位置函数

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from PyQt4.QtCore import *from PyQt4.QtGui import *import sysclass 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_()

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