Difference between revisions of "Development/Tutorials/Printing Hello World"

Revision as of 13:11, 27 May 2011

The mission

Print Hello World on your printer.

The code


include <qpainter.h>
include <qprinter.h>
include <kapplication.h>
include <kaboutdata.h>
include <kmessagebox.h>
include <kcmdlineargs.h>

/*
This prints Hello World on your printer

/

int main(int argc, char *argv[])
{

   KAboutData aboutData( "test", "test", "1.0", "test",
                         KAboutData::License_GPL, "(c) 2006" );
   KCmdLineArgs::init( argc, argv, &aboutData );
   KApplication app;

   QPrinter printer;
   printer.setFullPage(true);
   QPainter painter;
   painter.begin(&printer);
   painter.drawText(100,100,"Hello World");
   painter.end(); 
   // this makes the print job start

}

How to compile

CMakeLists.txt

find_package(KDE4 REQUIRED) include_directories( ${KDE4_INCLUDES} ) kde4_add_executable(printhelloworld printtest.cpp) target_link_libraries(printhelloworld ${${KDE4_KDECORE_LIBS} ${QT_QTGUI_LIBRARY})

Make and Run

Then do:

cmake .
make
./printhelloworld

@@ Line 1: / Line 1: @@
-{{note|This tutorial seems not to be up to date with current KDE4 development.}}
+== The mission ==
-=The mission=
 Print '''Hello World''' on your printer.
-=The KDE version=
+== The code ==
-This code will work for KDE 3 as for KDE 4.
-=The code=
 <code cppqt n>
-#include <kprinter.h>
 #include <qpainter.h>
+#include <qprinter.h>
 #include <kapplication.h>
 #include <kaboutdata.h>
@@ Line 22: / Line 18: @@
 int main(int argc, char *argv[])
 {
-  KAboutData aboutData( "test", "test", "1.0", "test",
+    KAboutData aboutData( "test", "test", "1.0", "test",
-      KAboutData::License_GPL, "(c) 2006" );
+                          KAboutData::License_GPL, "(c) 2006" );
-  KCmdLineArgs::init( argc, argv, &aboutData );
+    KCmdLineArgs::init( argc, argv, &aboutData );
-  KApplication app;
+    KApplication app;
-  KPrinter job;
+    QPrinter printer;
-  job.setFullPage( true );
+    printer.setFullPage(true);
-  if ( job.setup() )
-  {
      QPainter painter;
-     painter.begin( &job );
+     painter.begin(&printer);
      painter.drawText(100,100,"Hello World");
      painter.end();
      // this makes the print job start
-  }
 }
 </code>
-=Explanation=
+== How to compile ==
-You need a KDE instance to print, because this instance stores your configuration, including your printer configuration. You create one by instanciating the KApplication class.
+=== CMakeLists.txt ===
-=How to compile=
-==With KDE 4 and CMake==
-===CMakeLists.txt===
 <code>
 find_package(KDE4 REQUIRED)
 include_directories( ${KDE4_INCLUDES} )
 kde4_add_executable(printhelloworld printtest.cpp)
-target_link_libraries(printhelloworld ${KDE4_KDEPRINT_LIBS})
+target_link_libraries(printhelloworld ${${KDE4_KDECORE_LIBS} ${QT_QTGUI_LIBRARY})
 </code>
-===Make and Run===
+=== Make and Run ===
 Then do:
   cmake .
@@ Line 58: / Line 51: @@
   ./printhelloworld
-==With KDE 3==
-Quite easy:
- gcc printtest.cpp -o print -I/usr/lib/qt3/include \
- -I/opt/kde3/include -L/opt/kde3/lib \
- -L/usr/lib/qt3/lib  -lqt-mt -lkdeprint
-=See also=
-* Point your konqueror to [http://developer.kde.org/documentation/library/cvs-api/kdelibs-apidocs/kdeprint/html/classKPrinter.html kde:kprinter]
 [[Category:KDE4]]
 [[Category:C++]]