转换后的Qt文件无法打开新窗口

时间：2014-03-30 18:45:44

标签： python qt

我做了简单的Qt编程，因为我有两个Windows MainWindow和NewWindow。 MainWindow有一个名为mMyButton的按钮。 我的mainwindow.h是：

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
//added
#include "newwindow.h"

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
  Q_OBJECT

public:
  explicit MainWindow(QWidget *parent = 0);
  ~MainWindow();

public slots:
  void openNewWindow();

//added name of new window
private:
  NewWindow *mMyNewWindow;

private:
  Ui::MainWindow *ui;

private slots:
  void on_mMyButton_clicked();
};

#endif // MAINWINDOW_H

我的newwindow.h是：

#ifndef NEWWINDOW_H
#define NEWWINDOW_H

#include <QMainWindow>

namespace Ui {
class NewWindow;
}

class NewWindow : public QMainWindow
{
  Q_OBJECT

public:
  explicit NewWindow(QWidget *parent = 0);
  ~NewWindow();

private:
  Ui::NewWindow *ui;
};

#endif // NEWWINDOW_H

我的mainwindow.ccp是：

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
  QMainWindow(parent),
  ui(new Ui::MainWindow)
{
  ui->setupUi(this);
  //added
  connect(ui->mMyButton, SIGNAL(click()), this, SLOT(openNewWindow()));
}

MainWindow::~MainWindow()
{
  delete ui;
}

void MainWindow::openNewWindow()
{
  mMyNewWindow = new NewWindow();

  mMyNewWindow->show();

}

void MainWindow::on_mMyButton_clicked()
{
  openNewWindow();

}

我的newwindow.ccp是：

#include "newwindow.h"
#include "ui_newwindow.h"

NewWindow::NewWindow(QWidget *parent) :
  QMainWindow(parent),
  ui(new Ui::NewWindow)
{
  ui->setupUi(this);
}

NewWindow::~NewWindow()
{
  delete ui;
}

我的main.ccp是：

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  MainWindow w;
  w.show();

  return a.exec();
}

上面的代码将生成如下窗口：enter image description here

点击按钮后，另一个窗口将打开，如下：enter image description here

上面的Qt代码正在点击按钮后打开新窗口。我转换的.py代码mainwindow.py是：

from PyQt4 import QtCore, QtGui

try:
  _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
  _fromUtf8 = lambda s: s

class Ui_MainWindow(object):
  def setupUi(self, MainWindow):
    MainWindow.setObjectName(_fromUtf8("MainWindow"))
    MainWindow.resize(400, 300)
    self.centralWidget = QtGui.QWidget(MainWindow)
    self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
    self.mMyButton = QtGui.QPushButton(self.centralWidget)
    self.mMyButton.setGeometry(QtCore.QRect(140, 90, 99, 27))
    self.mMyButton.setObjectName(_fromUtf8("mMyButton"))
    MainWindow.setCentralWidget(self.centralWidget)
    self.menuBar = QtGui.QMenuBar(MainWindow)
    self.menuBar.setGeometry(QtCore.QRect(0, 0, 400, 25))
    self.menuBar.setObjectName(_fromUtf8("menuBar"))
    MainWindow.setMenuBar(self.menuBar)
    self.mainToolBar = QtGui.QToolBar(MainWindow)
    self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
    MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
    self.statusBar = QtGui.QStatusBar(MainWindow)
    self.statusBar.setObjectName(_fromUtf8("statusBar"))
    MainWindow.setStatusBar(self.statusBar)

    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

  def retranslateUi(self, MainWindow):
    MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
    self.mMyButton.setText(QtGui.QApplication.translate("MainWindow", "Addition", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
  import sys
  app = QtGui.QApplication(sys.argv)
  MainWindow = QtGui.QMainWindow()
  ui = Ui_MainWindow()
  ui.setupUi(MainWindow)
  MainWindow.show()
  sys.exit(app.exec_())

并且newwindow.py是：

# -*- coding: utf-8 -*-
from PyQt4 import QtCore, QtGui

try:
  _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
  _fromUtf8 = lambda s: s

class Ui_NewWindow(object):
  def setupUi(self, NewWindow):
    NewWindow.setObjectName(_fromUtf8("NewWindow"))
    NewWindow.resize(439, 225)
    self.centralwidget = QtGui.QWidget(NewWindow)
    self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
    self.pushButton_2 = QtGui.QPushButton(self.centralwidget)
    self.pushButton_2.setGeometry(QtCore.QRect(170, 140, 99, 27))
    self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
    self.widget = QtGui.QWidget(self.centralwidget)
    self.widget.setGeometry(QtCore.QRect(40, 30, 365, 89))
    self.widget.setObjectName(_fromUtf8("widget"))
    self.verticalLayout = QtGui.QVBoxLayout(self.widget)
    self.verticalLayout.setMargin(0)
    self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
    self.horizontalLayout_2 = QtGui.QHBoxLayout()
    self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
    self.label_3 = QtGui.QLabel(self.widget)
    self.label_3.setObjectName(_fromUtf8("label_3"))
    self.horizontalLayout_2.addWidget(self.label_3)
    self.lineEdit = QtGui.QLineEdit(self.widget)
    self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
    self.horizontalLayout_2.addWidget(self.lineEdit)
    self.label_4 = QtGui.QLabel(self.widget)
    self.label_4.setObjectName(_fromUtf8("label_4"))
    self.horizontalLayout_2.addWidget(self.label_4)
    self.lineEdit_2 = QtGui.QLineEdit(self.widget)
    self.lineEdit_2.setObjectName(_fromUtf8("lineEdit_2"))
    self.horizontalLayout_2.addWidget(self.lineEdit_2)
    self.verticalLayout.addLayout(self.horizontalLayout_2)
    self.pushButton = QtGui.QPushButton(self.widget)
    self.pushButton.setObjectName(_fromUtf8("pushButton"))
    self.verticalLayout.addWidget(self.pushButton)
    self.horizontalLayout = QtGui.QHBoxLayout()
    self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
    self.label = QtGui.QLabel(self.widget)
    self.label.setObjectName(_fromUtf8("label"))
    self.horizontalLayout.addWidget(self.label)
    self.label_2 = QtGui.QLabel(self.widget)
    self.label_2.setObjectName(_fromUtf8("label_2"))
    self.horizontalLayout.addWidget(self.label_2)
    self.verticalLayout.addLayout(self.horizontalLayout)
    NewWindow.setCentralWidget(self.centralwidget)
    self.menubar = QtGui.QMenuBar(NewWindow)
    self.menubar.setGeometry(QtCore.QRect(0, 0, 439, 25))
    self.menubar.setObjectName(_fromUtf8("menubar"))
    NewWindow.setMenuBar(self.menubar)
    self.statusbar = QtGui.QStatusBar(NewWindow)
    self.statusbar.setObjectName(_fromUtf8("statusbar"))
    NewWindow.setStatusBar(self.statusbar)

    self.retranslateUi(NewWindow)
    QtCore.QMetaObject.connectSlotsByName(NewWindow)

  def retranslateUi(self, NewWindow):
    NewWindow.setWindowTitle(QtGui.QApplication.translate("NewWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton_2.setText(QtGui.QApplication.translate("NewWindow", "Exit", None, QtGui.QApplication.UnicodeUTF8))
    self.label_3.setText(QtGui.QApplication.translate("NewWindow", "A = ", None, QtGui.QApplication.UnicodeUTF8))
    self.lineEdit.setText(QtGui.QApplication.translate("NewWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))
    self.label_4.setText(QtGui.QApplication.translate("NewWindow", "B = ", None, QtGui.QApplication.UnicodeUTF8))
    self.lineEdit_2.setText(QtGui.QApplication.translate("NewWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton.setText(QtGui.QApplication.translate("NewWindow", "Add", None, QtGui.QApplication.UnicodeUTF8))
    self.label.setText(QtGui.QApplication.translate("NewWindow", "Answer  : ", None, QtGui.QApplication.UnicodeUTF8))
    self.label_2.setText(QtGui.QApplication.translate("NewWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
  import sys
  app = QtGui.QApplication(sys.argv)
  NewWindow = QtGui.QMainWindow()
  ui = Ui_NewWindow()
  ui.setupUi(NewWindow)
  NewWindow.show()
  sys.exit(app.exec_())

这里上面的python代码运行不正常意味着点击按钮后主窗口新窗口没有打开，所以请建议python代码需要更改，这样我才能打开新窗口。

1 个答案:

答案 0 :(得分：0)

这个会奏效。然而，它非常丑陋并粘在一起。简而言之：你不能有两个主窗口。你可能想要的是QDialog或额外的QWidget。我强烈建议你阅读PySide或PyQT初学者教程，f.e。 http://zetcode.com/gui/pysidetutorial/ 

from PySide import QtCore, QtGui

try:
  _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
  _fromUtf8 = lambda s: s

class Ui_MainWindow(object):
  def setupUi(self, MainWindow):
    self.mainwindow=MainWindow
    MainWindow.setObjectName(_fromUtf8("MainWindow"))
    MainWindow.resize(400, 300)
    self.centralWidget = QtGui.QWidget(MainWindow)
    self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
    self.mMyButton = QtGui.QPushButton(self.centralWidget)
    self.mMyButton.setGeometry(QtCore.QRect(140, 90, 99, 27))
    self.mMyButton.setObjectName(_fromUtf8("mMyButton"))
    MainWindow.setCentralWidget(self.centralWidget)
    self.menuBar = QtGui.QMenuBar(MainWindow)
    self.menuBar.setGeometry(QtCore.QRect(0, 0, 400, 25))
    self.menuBar.setObjectName(_fromUtf8("menuBar"))
    MainWindow.setMenuBar(self.menuBar)
    self.mainToolBar = QtGui.QToolBar(MainWindow)
    self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
    MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
    self.statusBar = QtGui.QStatusBar(MainWindow)
    self.statusBar.setObjectName(_fromUtf8("statusBar"))
    MainWindow.setStatusBar(self.statusBar)

    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)
    self.mMyButton.clicked.connect(self.showNewWindow)

  def retranslateUi(self, MainWindow):
    MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
    self.mMyButton.setText(QtGui.QApplication.translate("MainWindow", "Addition", None, QtGui.QApplication.UnicodeUTF8))


  def showNewWindow(self):
    ui = Ui_NewWindow()
    ui.setupUi(QtGui.QDialog())
    ui.NewWindow.exec_()


try:
  _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
  _fromUtf8 = lambda s: s

class Ui_NewWindow(object):
  def setupUi(self, NewWindow):
    self.NewWindow=NewWindow
    self.NewWindow.setObjectName(_fromUtf8("NewWindow"))
    self.NewWindow.resize(439, 225)
    self.centralwidget = QtGui.QWidget(NewWindow)
    self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
    self.pushButton_2 = QtGui.QPushButton(self.centralwidget)
    self.pushButton_2.setGeometry(QtCore.QRect(170, 140, 99, 27))
    self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
    self.widget = QtGui.QWidget(self.centralwidget)
    self.widget.setGeometry(QtCore.QRect(40, 30, 365, 89))
    self.widget.setObjectName(_fromUtf8("widget"))
    self.verticalLayout = QtGui.QVBoxLayout(self.widget)
    #self.verticalLayout.setMargin(0)
    self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
    self.horizontalLayout_2 = QtGui.QHBoxLayout()
    self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
    self.label_3 = QtGui.QLabel(self.widget)
    self.label_3.setObjectName(_fromUtf8("label_3"))
    self.horizontalLayout_2.addWidget(self.label_3)
    self.lineEdit = QtGui.QLineEdit(self.widget)
    self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
    self.horizontalLayout_2.addWidget(self.lineEdit)
    self.label_4 = QtGui.QLabel(self.widget)
    self.label_4.setObjectName(_fromUtf8("label_4"))
    self.horizontalLayout_2.addWidget(self.label_4)
    self.lineEdit_2 = QtGui.QLineEdit(self.widget)
    self.lineEdit_2.setObjectName(_fromUtf8("lineEdit_2"))
    self.horizontalLayout_2.addWidget(self.lineEdit_2)
    self.verticalLayout.addLayout(self.horizontalLayout_2)
    self.pushButton = QtGui.QPushButton(self.widget)
    self.pushButton.setObjectName(_fromUtf8("pushButton"))
    self.verticalLayout.addWidget(self.pushButton)
    self.horizontalLayout = QtGui.QHBoxLayout()
    self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
    self.label = QtGui.QLabel(self.widget)
    self.label.setObjectName(_fromUtf8("label"))
    self.horizontalLayout.addWidget(self.label)
    self.label_2 = QtGui.QLabel(self.widget)
    self.label_2.setObjectName(_fromUtf8("label_2"))
    self.horizontalLayout.addWidget(self.label_2)
    self.verticalLayout.addLayout(self.horizontalLayout)
    self.menubar = QtGui.QMenuBar(NewWindow)
    self.menubar.setGeometry(QtCore.QRect(0, 0, 439, 25))
    self.menubar.setObjectName(_fromUtf8("menubar"))

    self.statusbar = QtGui.QStatusBar(NewWindow)
    self.statusbar.setObjectName(_fromUtf8("statusbar"))

    self.retranslateUi(NewWindow)
    QtCore.QMetaObject.connectSlotsByName(NewWindow)
    self.pushButton.clicked.connect(self.sum)


  def sum(self):
    summed = float(self.lineEdit.text()) + float(self.lineEdit_2.text())
    self.label_2.setText(str(summed))

  def retranslateUi(self, NewWindow):
    self.NewWindow.setWindowTitle(QtGui.QApplication.translate("NewWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton_2.setText(QtGui.QApplication.translate("NewWindow", "Exit", None, QtGui.QApplication.UnicodeUTF8))
    self.label_3.setText(QtGui.QApplication.translate("NewWindow", "A = ", None, QtGui.QApplication.UnicodeUTF8))
    self.lineEdit.setText(QtGui.QApplication.translate("NewWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))
    self.label_4.setText(QtGui.QApplication.translate("NewWindow", "B = ", None, QtGui.QApplication.UnicodeUTF8))
    self.lineEdit_2.setText(QtGui.QApplication.translate("NewWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))
    self.pushButton.setText(QtGui.QApplication.translate("NewWindow", "Add", None, QtGui.QApplication.UnicodeUTF8))
    self.label.setText(QtGui.QApplication.translate("NewWindow", "Answer  : ", None, QtGui.QApplication.UnicodeUTF8))
    self.label_2.setText(QtGui.QApplication.translate("NewWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
  import sys
  app = QtGui.QApplication(sys.argv)
  MainWindow = QtGui.QMainWindow()
  ui = Ui_MainWindow()
  ui.setupUi(MainWindow)
  MainWindow.show()
  sys.exit(app.exec_())
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