Development/Tutorials/First program: Difference between revisions

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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">
#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 );
}
</highlightSyntax>
If you set up your environment as described in [[Build/Unstable Version|Build/Unstable Version]], 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
 
{{KDE4}}

Latest revision as of 14:30, 8 September 2020

This first program page was move here.