[C++] Cum adaug o pictograma?

[4drian]

Sistemul de operare pe care il folosesc este Linux Ubuntu, iar toolkit-ul este Qt.Vreau sa implementez in urmatorul program o pictograma

Fisierul main.cpp

Code:

#include "HelloWidget.h" #include <QDesktopWidget> #include <QApplication> // function used for setting the widget position and maximum/minimum size void setWidgetPosition(QWidget* widget) {     // get the desktop     QDesktopWidget *desktop = QApplication::desktop();     // move the widget to the center of the screen     widget->move((desktop->width() - widget->sizeHint().width()) / 2,                  (desktop->height() - widget->sizeHint().height()) / 2);     // set the minimum and maximum size of the widget     // it won't be possible to resize the widget     // above the maximum or below the minimum limits     widget->setMaximumSize(2 * widget->sizeHint().width(), widget->sizeHint().height());     widget->setMinimumSize(widget->sizeHint()); } int main(int argc, char *argv[]) {   // this is our application   QApplication app(argc, argv);   // we create a HelloWidget object   HelloWidget hello;   // set the name displayed in the title bar for our object   hello.setWindowTitle(QObject::tr("Utilizator"));   // set the position of our widget   setWidgetPosition(&hello);   // make it visible   hello.show();   // start the event loop   return app.exec();

Fisierul HelloWidget.cpp

Code:

#include <QLineEdit> #include <QLabel> #include <QPushButton> #include <QVBoxLayout> #include <QMessageBox> #include <QRegExp> #include <QRegExpValidator> #include <QKeyEvent> #include <QApplication> #include "HelloWidget.h" const int MAX_NAME_LENGTH = 256; HelloWidget::HelloWidget(QWidget* parent) :         QWidget(parent) {     actionSubMenu1 = new QAction(this);     actionSubMenu1->setObjectName("actionSubMenu1");     actionSubMenu1->setText("SubMenu1");     actionSubMenu2 = new QAction(this);     actionSubMenu2->setObjectName("actionSubMenu2");     actionSubMenu2->setText("SubMenu2");     menuBar = new QMenuBar(this);     menuBar->setObjectName("menuBar");     menuBar->setGeometry(QRect(0, 0, 200, 40));     menuMenu1 = new QMenu(menuBar);     menuMenu1->setObjectName("menuMenu1");     menuBar->addAction(menuMenu1->menuAction());     menuMenu1->addAction(actionSubMenu1);     menuMenu1->addSeparator();     menuMenu1->addAction(actionSubMenu2);     menuMenu1->setTitle("Menu1");     connect(actionSubMenu1, SIGNAL(triggered()), this, SLOT(OnSubMenu1()));     // create a horizontal layout which will contain a label and the m_nameLineEdit     // control, used for entering the name     QHBoxLayout* hbox1 = new QHBoxLayout();     // create a label and add it to hbox1 layout     QLabel* label = new QLabel(tr("Introduceti numele: "), this);     hbox1->addWidget(label);     // create the m_nameLineEdit control and attach a regexp validator to it     // the regext validator will check that string introduced in the control     // represents a valid name     QRegExp regex("((\\s*)([a-zA-Z]+)(\\.*)(\\s*))+");     QRegExpValidator* regexValidator = new QRegExpValidator(regex, this);     m_nameLineEdit = new QLineEdit(this);     m_nameLineEdit->setValidator(regexValidator);     // connect the slots to the signals, for the m_nameLineEdit control     connect(m_nameLineEdit, SIGNAL(textChanged(QString)), this, SLOT(onTextChanged()));     connect(m_nameLineEdit, SIGNAL(returnPressed()), this, SLOT(onEnterPressed()));     // add the control tp the hbox1 layout     hbox1->addWidget(m_nameLineEdit);     // create a new horizontal layout, which will contain the OK and Clear buttons     QHBoxLayout* hbox2 = new QHBoxLayout();     // create the OK buttom, set as disabled initially     m_okButton = new QPushButton(tr("OK"), this);     m_okButton->setEnabled(false);     // connect the signals to the slots for the OK button     connect(m_okButton, SIGNAL(clicked()), this, SLOT(onOkButtonClicked()));     // add the control to the hbox2 layout     hbox2->addWidget(m_okButton);     // create the Clear button, set as disabled initially     m_clearButton = new QPushButton(tr("Clear"), this);     m_clearButton->setEnabled(false);     // connect the signals to the slots for the Clear button     connect(m_clearButton, SIGNAL(clicked()), this, SLOT(onClearButtonClicked()));     // add the control to the hbox2 layout     hbox2->addWidget(m_clearButton);     // create a vertical layout that will contain the first two horizontal layouts with     // a vertical stretch btween them     QVBoxLayout* vbox = new QVBoxLayout(this);     vbox->addLayout(hbox1);     vbox->addStretch();     vbox->addLayout(hbox2);     // set the vertical layout as the layout for our HelloWidget object     setLayout(vbox); } // this is called when the text changes in the m_lineEdit control // if we have no text available in the control, disable the OK and Clear buttons void HelloWidget::onTextChanged() {     if (m_nameLineEdit->text() > 0)     {         m_okButton->setEnabled(true);         m_clearButton->setEnabled(true);     }     else     {         m_okButton->setEnabled(false);         m_clearButton->setEnabled(false);     } } // this is called when the user press the ENTER key with the focus on m_nameLineEdit // the name entered by the user in the m_nameLineEdit will be shown in a message box void HelloWidget::onEnterPressed() {     showName(); } // this is called when the OK button is clicked // the name entered by the user in the m_nameLineEdit will be shown in a message box void HelloWidget::onOkButtonClicked() {     showName(); } // this is called when the clear button is clicked // the focus is set on the m_nameLineEdit, which gets cleared void HelloWidget::onClearButtonClicked() {     m_nameLineEdit->clear();     m_nameLineEdit->setFocus(); } // this is called when a key is pressed // if the key got pressed is ESC, we quit the application // if we pressed return, we check if the focus is on the m_okButton or m_clearButton // if it is, we execute their clicked() slots void HelloWidget::keyPressEvent(QKeyEvent * event) {     if (event->key() == Qt::Key_Escape)         qApp->quit();     else if(event->key() == Qt::Key_Return)     {         if (m_okButton->hasFocus())             onOkButtonClicked();         else if (m_clearButton->hasFocus())             onClearButtonClicked();     } } // this is called to show the name entered in the m_nameLineEdit control, in a message box // we check if the name is no more than MAX_NAME_LENGTH characters (otherwise // we display and error) // after displaying the message, we clear the m_nameLineEdit control and set focus on it void HelloWidget::showName() {     QString userName = m_nameLineEdit->text();     if (userName.size() > MAX_NAME_LENGTH)     {         showNameToLongError();         return;     }     QMessageBox::information(this, tr("Informatii utilizator"),                              tr("Numele introdus este: ") + userName);     m_nameLineEdit->clear();     m_nameLineEdit->setFocus(); } // function used to show and error, in case the name entered in the m_nameLineEdit // control is bigger than MAX_NAME_LENGTH characters // after displaying the message, we clear the m_nameLineEdit control and set focus on it void HelloWidget::showNameToLongError() {     QMessageBox::critical(this, tr("Eroare"),                              tr("Numele introdus este prea lung !"));     m_nameLineEdit->clear();     m_nameLineEdit->setFocus(); } void HelloWidget::OnSubMenu1() {     QMessageBox::information(this, "Mesaj",":-)"); }

Fisierul HelloWidget.h

Code:

#ifndef HELLOWIDGET_H #define HELLOWIDGET_H #include <QWidget> #include </QAction> #include </QMenu> #include </QMenuBar> // forward class declarations class QLineEdit; class QPushButton; class QKeyEvent; class HelloWidget : public QWidget {     Q_OBJECT     public:         QAction *actionSubMenu1;         QAction *actionSubMenu2;         QMenuBar *menuBar;         QMenu *menuMenu1;          /**          *@brief constructor for HelloWidget class          *@param parent the parent of this widget          */         HelloWidget(QWidget *parent = 0);     private slots:         void OnSubMenu1();         /**          *@brief slot called when m_nameLineEdit emits the textChanged() signal          */         void onTextChanged();         /**          *@brief slot called when ENTER is pressed with focus on m_nameLineEdit control          */         void onEnterPressed();         /**          *@brief slot called when the m_okButton button is clicked          */         void onOkButtonClicked();         /**          *@brief slot called when the m_clearButton button is clicked          */         void onClearButtonClicked();     private:         /**          *@brief function called when a key is pressed          *@param event the key event that generated the signal          */         void keyPressEvent(QKeyEvent* event);         /**          *@brief shows the name of the user in a message box          */         void showName();         /**          *@brief shows an error message if the user entered a name larger than 256 characters          */         void showNameToLongError();         /**          * the line edit control where the user enters the name          */         QLineEdit* m_nameLineEdit;         /**          * the OK button          */         QPushButton* m_okButton;         /**          * the clear button          */         QPushButton* m_clearButton; }; #endif

Ma ajuta cineva? Multumesc anticipat.

[4drian]

SO, can you help me?

[*0ranGe ! extrem]

Asteapta sa iti raspunda Shocker, el nu e acasa momentan. Nu mai face dublu post.

[4drian]

Ok, imi cer scuze.