Dear Sir!
Qt Code: 
  1. #ifndef UI_MAINWINDOW_H
  2. #define UI_MAINWINDOW_H
  3.  
  4. #include <QtCore/QVariant>
  5. #include <QtGui/QAction>
  6. #include <QtGui/QApplication>
  7. #include <QtGui/QButtonGroup>
  8. #include <QtGui/QLabel>
  9. #include <QtGui/QLineEdit>
  10. #include <QtGui/QMainWindow>
  11. #include <QtGui/QStatusBar>
  12. #include <QtGui/QToolBar>
  13. #include <QtGui/QWidget>
  14.  
  15. class Ui_MainWindow
  16. {
  17. public:
  18.     QAction *actionRect;
  19.     QWidget *centralwidget;
  20.     QLineEdit *lineEditX;
  21.     QWidget *widget;
  22.     QLineEdit *lineEditY;
  23.     QLineEdit *lineEditHeight;
  24.     QLineEdit *lineEditWidth;
  25.     QLabel *labelX;
  26.     QLabel *labelY;
  27.     QLabel *labelHeight;
  28.     QLabel *labelWidth;
  29.     QStatusBar *statusbar;
  30.     QToolBar *toolBar;
  31.  
  32.     void setupUi(QMainWindow *MainWindow)
  33.     {
  34.     if (MainWindow->objectName().isEmpty())
  35.         MainWindow->setObjectName(QString::fromUtf8("MainWindow"));
  36.     MainWindow->resize(824, 600);
  37.     actionRect = new QAction(MainWindow);
  38.     actionRect->setObjectName(QString::fromUtf8("actionRect"));
  39.     actionRect->setIcon(QIcon(QString::fromUtf8("../undo/icons/rectangle.png")));
  40.     centralwidget = new QWidget(MainWindow);
  41.     centralwidget->setObjectName(QString::fromUtf8("centralwidget"));
  42.     lineEditX = new QLineEdit(centralwidget);
  43.     lineEditX->setObjectName(QString::fromUtf8("lineEditX"));
  44.     lineEditX->setGeometry(QRect(80, 40, 51, 31));
  45.     widget = new QWidget(centralwidget);
  46.     widget->setObjectName(QString::fromUtf8("widget"));
  47.     widget->setGeometry(QRect(160, 10, 661, 501));
  48.     QPalette palette;
  49.     QBrush brush(QColor(255, 255, 255, 255));
  50.     brush.setStyle(Qt::SolidPattern);
  51.     palette.setBrush(QPalette::Active, QPalette::Base, brush);
  52.     QBrush brush1(QColor(170, 255, 127, 255));
  53.     brush1.setStyle(Qt::SolidPattern);
  54.     palette.setBrush(QPalette::Active, QPalette::Window, brush1);
  55.     palette.setBrush(QPalette::Inactive, QPalette::Base, brush);
  56.     palette.setBrush(QPalette::Inactive, QPalette::Window, brush1);
  57.     palette.setBrush(QPalette::Disabled, QPalette::Base, brush1);
  58.     palette.setBrush(QPalette::Disabled, QPalette::Window, brush1);
  59.     widget->setPalette(palette);
  60.     widget->setAutoFillBackground(true);
  61.     lineEditY = new QLineEdit(centralwidget);
  62.     lineEditY->setObjectName(QString::fromUtf8("lineEditY"));
  63.     lineEditY->setGeometry(QRect(80, 80, 51, 31));
  64.     lineEditHeight = new QLineEdit(centralwidget);
  65.     lineEditHeight->setObjectName(QString::fromUtf8("lineEditHeight"));
  66.     lineEditHeight->setGeometry(QRect(80, 160, 51, 31));
  67.     lineEditWidth = new QLineEdit(centralwidget);
  68.     lineEditWidth->setObjectName(QString::fromUtf8("lineEditWidth"));
  69.     lineEditWidth->setGeometry(QRect(80, 120, 51, 31));
  70.     labelX = new QLabel(centralwidget);
  71.     labelX->setObjectName(QString::fromUtf8("labelX"));
  72.     labelX->setGeometry(QRect(50, 50, 21, 18));
  73.     labelY = new QLabel(centralwidget);
  74.     labelY->setObjectName(QString::fromUtf8("labelY"));
  75.     labelY->setGeometry(QRect(50, 90, 17, 18));
  76.     labelHeight = new QLabel(centralwidget);
  77.     labelHeight->setObjectName(QString::fromUtf8("labelHeight"));
  78.     labelHeight->setGeometry(QRect(30, 170, 47, 20));
  79.     labelWidth = new QLabel(centralwidget);
  80.     labelWidth->setObjectName(QString::fromUtf8("labelWidth"));
  81.     labelWidth->setGeometry(QRect(30, 130, 41, 18));
  82.     MainWindow->setCentralWidget(centralwidget);
  83.     statusbar = new QStatusBar(MainWindow);
  84.     statusbar->setObjectName(QString::fromUtf8("statusbar"));
  85.     MainWindow->setStatusBar(statusbar);
  86.     toolBar = new QToolBar(MainWindow);
  87.     toolBar->setObjectName(QString::fromUtf8("toolBar"));
  88.     MainWindow->addToolBar(Qt::TopToolBarArea, toolBar);
  89.  
  90.     toolBar->addAction(actionRect);
  91.  
  92.     retranslateUi(MainWindow);
  93.  
  94.     QMetaObject::connectSlotsByName(MainWindow);
  95.     } // setupUi
  96.  
  97.     void retranslateUi(QMainWindow *MainWindow)
  98.     {
  99.     MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", 0, QApplication::UnicodeUTF8));
  100.     actionRect->setText(QApplication::translate("MainWindow", "Rect", 0, QApplication::UnicodeUTF8));
  101.     labelX->setText(QApplication::translate("MainWindow", "X", 0, QApplication::UnicodeUTF8));
  102.     labelY->setText(QApplication::translate("MainWindow", "Y", 0, QApplication::UnicodeUTF8));
  103.     labelHeight->setText(QApplication::translate("MainWindow", "Height", 0, QApplication::UnicodeUTF8));
  104.     labelWidth->setText(QApplication::translate("MainWindow", "Width", 0, QApplication::UnicodeUTF8));
  105.     toolBar->setWindowTitle(QApplication::translate("MainWindow", "toolBar", 0, QApplication::UnicodeUTF8));
  106.     } // retranslateUi
  107.  
  108. };
  109.  
  110. namespace Ui {
  111.     class MainWindow: public Ui_MainWindow {};
  112. } // namespace Ui
  113.  
  114. #endif // UI_MAINWINDOW_H
  115.  
  116.  
  117.  
  118. #ifndef MAINWINDOW_H
  119. #define MAINWINDOW_H
  120. #include <QMainWindow>
  121. #include "ui_mainwindow.h"
  122. #include <QGridLayout>
  123. class MainWindow: public QMainWindow, public Ui_MainWindow
  124. {
  125. 	Q_OBJECT
  126.  
  127. public:
  128.     MainWindow(QWidget *parent = 0);
  129.     QWidget *wd[100];
  130.     QGridLayout *layout;
  131. private slots:
  132. 	void newRect();
  133.  
  134. };
  135. #endif // MAINWINDOW_H
  136.  
  137. //mainwindow.cpp
  138. #include "mainwindow.h"
  139.  
  140. int num;
  141. MainWindow::MainWindow(QWidget *parent)
  142.     : QMainWindow(parent)
  143. {
  144.     setupUi(this);
  145.     num=1;
  146.     layout = new QGridLayout();
  147.     connect(actionRect, SIGNAL(triggered()), this, SLOT(newRect()));
  148.  
  149. }
  150.  
  151. void MainWindow::newRect()
  152. {
  153. 	wd[num] = new QWidget(widget);
  154.  
  155. 	layout->addWidget(wd[num]);
  156. 	widget->setLayout(layout);
  157.     wd[num]->show();
  158. 	lineEditX->setText( QString::number(wd[num]->x()));
  159. 	lineEditY->setText( QString::number(wd[num]->y()));
  160. 	lineEditWidth->setText( QString::number(wd[num]->width()));
  161. 	lineEditHeight->setText( QString::number(wd[num]->height()));
  162. 	num++;
  163.  
  164. }
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The code is as above.
It displays the coordinates in its QLineEdit; but not displays the run time QWidget wd[num].
What should I do for that?