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| 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
| | This [https://develop.kde.org/docs/getting-started/hello_world/ first program] page was move [https://develop.kde.org/docs/getting-started/hello_world/ here]. |
| <highlightSyntax language="cpp">
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| #include <QString>
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| #include <kapplication.h>
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| #include <kaboutdata.h>
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| #include <kmessagebox.h>
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| #include <kcmdlineargs.h>
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|
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| int main (int argc, char *argv[])
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| {
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| KAboutData aboutData( "test", "test",
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| "1.0", "test", KAboutData::License_GPL,
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| "(c) 2006" );
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| KCmdLineArgs::init( argc, argv, &aboutData );
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| KApplication khello;
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| KGuiItem kgi( QString( "Hello" ), QString(),
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| QString( "this is a tooltip" ),
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| QString( "this is whatsthis" ) );
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| KMessageBox::questionYesNo( 0, "text", "caption", kgi );
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| }
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| </highlightSyntax>
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| If you set up your environment as described in [[Build/Unstable Version|Build/Unstable Version]], you can compile this code with
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|
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| gcc hello.cpp -o hello -I/home/kde-devel/qt-unstable/include/Qt \
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| -I/home/kde-devel/qt-unstable/include/Qt-Core \
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| -I/home/kde-devel/qt-unstable/include -I/home/kde-devel/kde/include \
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| -L/home/kde-devel/kde/lib \
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| -L/home/kde-devel/qt-unstable/lib -lkdeui -lkdecore -ldl
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| and then run it with
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| ./hello | |
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| {{KDE4}}
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