Development/Tutorials/KDE2/KHello/Tutorial 4: Difference between revisions
Neverendingo (talk | contribs) m (Text replace - "<code cppqt n>" to "<syntaxhighlight lang="cpp-qt" line>") |
Neverendingo (talk | contribs) m (Text replace - "</code>" to "</syntaxhighlight>") |
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KPopupMenu *file, *help; | KPopupMenu *file, *help; | ||
}; | }; | ||
</ | </syntaxhighlight> | ||
<syntaxhighlight lang="cpp-qt" line> | <syntaxhighlight lang="cpp-qt" line> | ||
/************* khello.cc ******************/ | /************* khello.cc ******************/ | ||
| Line 76: | Line 76: | ||
} | } | ||
// end From KHello3 | // end From KHello3 | ||
</ | </syntaxhighlight> | ||
==Important code== | ==Important code== | ||
This code was simple and didn't need any explaining. However, I think one line was important, and will comment it. | This code was simple and didn't need any explaining. However, I think one line was important, and will comment it. | ||
<syntaxhighlight lang="cpp-qt"> | <syntaxhighlight lang="cpp-qt"> | ||
help = helpMenu("KHello\nby Daniel Marjamäki\nUpdated by David Leimbach"); | help = helpMenu("KHello\nby Daniel Marjamäki\nUpdated by David Leimbach"); | ||
</ | </syntaxhighlight> | ||
KMainWindow has a built in function which generates a help menu. Use it, in order to make your application consistent to other KDE programs. | KMainWindow has a built in function which generates a help menu. Use it, in order to make your application consistent to other KDE programs. | ||
Latest revision as of 20:52, 29 June 2011
Description
Now we will make our users very happy by adding a menu!
Source code
/************* khello.h *******************/
// From KHello3
#include <kapp.h>
#include <kmainwindow.h>
#include <kmessagebox.h>
#include <qpushbutton.h>
// end From KHello3
#include <kmenubar.h>
#include <kpopupmenu.h>
// From KHello3
class KHello : public KMainWindow
{
Q_OBJECT
public:
KHello();
void closeEvent(QCloseEvent *);
public slots:
void slotHello();
void slotExit();
private:
QPushButton *btnHello;
QPushButton *btnExit;
// end From KHello3
KMenuBar *menu;
KPopupMenu *file, *help;
};/************* khello.cc ******************/
// From KHello3
#include "khello.moc"
#include <kmessagebox.h>
KHello::KHello() : KMainWindow()
{
btnHello = new QPushButton("Hello", this);
btnHello->setGeometry(45,30,50,25);
btnHello->show();
connect(btnHello, SIGNAL(clicked()), this, SLOT(slotHello()));
btnExit = new QPushButton("Exit", this);
btnExit->setGeometry(105,30,50,25);
btnExit->show();
connect(btnExit, SIGNAL(clicked()), this, SLOT(slotExit()));
// end From KHello3
file = new KPopupMenu();
file->insertItem("&Hello", this, SLOT(slotHello()));
file->insertItem("&Exit", this, SLOT(slotExit()));
help = helpMenu("KHello\nby Daniel Marjamäki\nUpdated by David Leimbach");
menu = menuBar();
menu->insertItem("&File", file);
menu->insertItem("&Help", help);
}
// From KHello3
void KHello::closeEvent(QCloseEvent *e)
{
kapp->beep();
KMainWindow::closeEvent(e);
}
void KHello::slotHello()
{
KMessageBox::information(this, "Hello World!", "Important");
}
void KHello::slotExit()
{
close();
}
// end From KHello3Important code
This code was simple and didn't need any explaining. However, I think one line was important, and will comment it.
help = helpMenu("KHello\nby Daniel Marjamäki\nUpdated by David Leimbach");KMainWindow has a built in function which generates a help menu. Use it, in order to make your application consistent to other KDE programs.
Compiling
[on linux where KDEDIR and QTDIR contain the paths to where KDE and Qt are installed respectively] [FreeBSD 5.x users may omit the -ldl]
g++ -c -I$KDEDIR/include -I$QTDIR/include -fno-rtti main.cc moc khello.h -o khello.moc g++ -c -I$KDEDIR/include -I$QTDIR/include -fno-rtti khello.cc g++ -L$KDEDIR/lib -L$QTDIR/lib -lkdeui -lkdecore -lqt -ldl -o khello main.o khello.o