下面來分析一下Qt Designer生成的源碼。

Qt Designer制作的圖形界面為

生成的代碼如下

[python]?view plaincopy

from?PyQt5?import?QtCore,?QtGui,?QtWidgets??????????????????????????????????#導(dǎo)入模塊??

??

??

class?Ui_Form(object):??????????????????????????????????????????????????????#創(chuàng)建窗口類，繼承object??

????def?setupUi(self,?Form):??

????????Form.setObjectName("Form")??????????????????????????????????????????#設(shè)置窗口名??

????????Form.resize(400,?300)???????????????????????????????????????????????#設(shè)置窗口大小??

????????self.quitButton?=?QtWidgets.QPushButton(Form)???????????????????????#創(chuàng)建一個(gè)按鈕，并將按鈕加入到窗口Form中??

????????self.quitButton.setGeometry(QtCore.QRect(280,?240,?75,?23))?????????#設(shè)置按鈕大小與位置??

????????self.quitButton.setObjectName("quitButton")?????????????????????????#設(shè)置按鈕名??

??

??

????????self.retranslateUi(Form)??

????????QtCore.QMetaObject.connectSlotsByName(Form)?????????????????????????#關(guān)聯(lián)信號(hào)槽??

??

??

????def?retranslateUi(self,?Form):??

????????_translate?=?QtCore.QCoreApplication.translate??

????????Form.setWindowTitle(_translate("Form",?"Test"))?????????????????????#設(shè)置窗口標(biāo)題??

????????self.quitButton.setText(_translate("Form",?"Quit"))?????????????????#設(shè)置按鈕顯示文字??

現(xiàn)在運(yùn)行這段代碼，窗口是不會(huì)出現(xiàn)的。如何使窗口出現(xiàn)呢？下面需要添加一段代碼

[python]?view plaincopy

if?__name__=="__main__":??

????import?sys??

????app=QtWidgets.QApplication(sys.argv)??

????widget=QtWidgets.QWidget()??

????ui=Ui_Form()??

????ui.setupUi(widget)??

????widget.show()??

????sys.exit(app.exec_())??

因?yàn)镼t Designer默認(rèn)繼承的object類，不提供show()顯示方法，所以我們生成一個(gè)QWidget對(duì)象來重載我們?cè)O(shè)計(jì)的Ui_Form類，達(dá)到顯示效果。

新建一個(gè)文件，導(dǎo)入我們?cè)O(shè)計(jì)的untitled?.py文件，實(shí)現(xiàn)代碼與界面分離。

[python]?view plaincopy

from?PyQt5?import?QtWidgets??

from?untitled?import?Ui_Form??

??

class?mywindow(QtWidgets.QWidget):??

????def?__init__(self):??

????????super(mywindow,self).__init__()??

????????self.new=Ui_Form()??

????????self.new.setupUi(self)??

??

if?__name__=="__main__":??

????import?sys??

??

????app=QtWidgets.QApplication(sys.argv)??

????myshow=mywindow()??

????myshow.show()??

????sys.exit(app.exec_())??

直接繼承界面類

[python]?view plaincopy

from?PyQt5?import?QtWidgets??

from?untitled?import?Ui_Form??

??

class?mywindow(QtWidgets.QWidget,Ui_Form):??

????def?__init__(self):??

????????super(mywindow,self).__init__()??

????????self.setupUi(self)??

??

if?__name__=="__main__":??

????import?sys??

??

????app=QtWidgets.QApplication(sys.argv)??

????myshow=mywindow()??

????myshow.show()??

????sys.exit(app.exec_())??

總結(jié)

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