Difference between revisions of "Development/Tutorials/First program"

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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
 
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
<highlightSyntax language="cpp">
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<code cppqt n>
 
  #include <QString>
 
  #include <QString>
 
  #include <kapplication.h>
 
  #include <kapplication.h>
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   KMessageBox::questionYesNo( 0, "text", "caption", kgi );
 
   KMessageBox::questionYesNo( 0, "text", "caption", kgi );
 
  }
 
  }
</highlightSyntax>
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</code>
 
If you set up your environment as described in [[Build/Unstable Version|Build/Unstable Version]], you can compile this code with
 
If you set up your environment as described in [[Build/Unstable Version|Build/Unstable Version]], you can compile this code with
 
   
 
   

Revision as of 06:09, 17 December 2006

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

#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 described in 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

Ktip.png
Tip
Note: This page is about KDE 4. It isn't applicable for KDE 3 development.

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