我通过添加以下语句修改了代码：TracParamframe.setLayout（hbox）
添加的代码如下：
import sysfrom PyQt4 import QtGui, QtCoreclass Example(QtGui.QWidget): def __init__(self): super(Example, self).__init__() self.initUI() def initUI(self): hbox = QtGui.QHBoxLayout() grid = QtGui.QGridLayout() #Definition des Tracing Parameters widgets WindowSize = QtGui.QLabel("Window size (m)") SampPts = QtGui.QLabel("Sampling points") WindowSizeEdit = QtGui.QLineEdit() SampPtsEdit = QtGui.QLineEdit() TracParamframe = QtGui.QGroupBox(self) TracParamframe.setTitle("Tracing Parameters") hbox.addLayout(grid) grid.addWidget(WindowSize,0,0) grid.addWidget(WindowSizeEdit,0,1) grid.addWidget(SampPts,1,0) grid.addWidget(SampPtsEdit,1,1) TracParamframe.setLayout(hbox) #self.setLayout(hbox) self.setGeometry(300,300,350,300) self.show()def main(): app = QtGui.QApplication(sys.argv) ex = Example() sys.exit(app.exec_())if __name__ == '__main__': main()
