Revision as of 03:55, 30 August 2006

This is a tutorial to learn KDE programming by examples. It assumes you are working with KDE 4, not KDE 3 (see build_unstable for how to build it).

Start

@@ Line 2: / Line 2: @@
-Start
+=Start=
 To learn KDE programming, first read this:
 http://developer.kde.org/~wheeler/cpp-pitfalls.html
-Your first program shall greet the world with a friendly "hello world", what else ? For that, we will use a KMessageBox. To get more information about the KMessageBox-Class, type "kde: kmessagebox" in your konqueror and it will redirect you to http://developer.kde.org/documentation/library/cvs-api/kdelibs-apidocs/kdeui/html/classKMessageBox.html
+* [[ProgrammingTutorialFirstProgram | Your first program]]
+* [[How to write Kontact plugins]]
- #include <QString>
- #include <kapplication.h>
- #include <kaboutdata.h>
- #include <kmessagebox.h>
- #include <kcmdlineargs.h>
- int main (int argc, char *argv[])
- {
-   KAboutData aboutData( "test", "test",
-       "1.0", "test", KAboutData::License_GPL,
-       "(c) 2006" );
-   KCmdLineArgs::init( argc, argv, &aboutData );
-   KApplication khello;
-   KGuiItem kgi(QString("Hello"),QString(),QString("this is a tooltip"),QString("this is whatsthis"));
-   KMessageBox::questionYesNo(0,"text","caption",kgi);
- }
-If you set up your environment as in KDE3To4, you can compile this code with
- gcc hello.cpp -o hello -I/home/kde-devel/qt-unstable/include/Qt  -I/home/kde-devel/qt-unstable/include/Qt-Core \
- -I/home/kde-devel/qt-unstable/include -I/home/kde-devel/kde/include  -L/home/kde-devel/kde/lib \
- -L/home/kde-devel/qt-unstable/lib -lkdeui -lkdecore -ldl
-and then run it with
-./hello