Development/Tutorials/Printing Hello World: Difference between revisions

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#REDIRECT [[Programming Tutorials/printing/KDE4]]
{{Review|Port to KF5}}
 
== The mission ==
 
Print '''Hello World''' on your printer. There will be no more dialog to confirm how many pages you want or the like.
 
== The files ==
'''main.cpp'''
<syntaxhighlight lang="cpp-qt" line>
#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(
                        // The program name used internally.
                        "tutorial-printing",
                        // The message catalog name
                        // If null, program name is used instead.
                        0,
                        // A displayable program name string.
                        ki18n("Printing Tutorial"),
                        // The program version string.
                        "1.0",
                        // Short description of what the app does.
                        ki18n("Displays a KMessageBox popup"),
                        // The license this code is released under
                        KAboutData::License_GPL,
                        // Copyright Statement
                        ki18n("(c) 2006-2011"),
                        // Optional text shown in the About box.
                        // Can contain any information desired.
                        ki18n("Some text..."),
                        // The program homepage string.
                        "http://example.com/",
                        // The bug report email address
                        "[email protected]");
    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
}
</syntaxhighlight>
 
'''CMakeLists.txt'''
<syntaxhighlight lang="text">
find_package(KDE4 REQUIRED)
include_directories( ${KDE4_INCLUDES} )
kde4_add_executable(printhelloworld main.cpp)
target_link_libraries(printhelloworld ${KDE4_KDEUI_LIBS} ${QT_QTGUI_LIBRARY})
</syntaxhighlight>
 
=== Make and Run ===
To build and run it, make sure you have your build environment set up correctly as described [[Getting_Started/Build|here]], then do:
cmake .
make
./printhelloworld
 
== Next ==
Next: [[Development/Tutorials/Printing_Print_Dialog|How to use the KDE print dialog in your programs]]
 
[[Category:KDE4]]
[[Category:C++]]

Latest revision as of 12:38, 31 May 2019

Warning
This page needs a review and probably holds information that needs to be fixed.

Parts to be reviewed:

Port to KF5

The mission

Print Hello World on your printer. There will be no more dialog to confirm how many pages you want or the like.

The files

main.cpp

#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(
                         // The program name used internally.
                         "tutorial-printing",
                         // The message catalog name
                         // If null, program name is used instead.
                         0,
                         // A displayable program name string.
                         ki18n("Printing Tutorial"),
                         // The program version string.
                         "1.0",
                         // Short description of what the app does.
                         ki18n("Displays a KMessageBox popup"),
                         // The license this code is released under
                         KAboutData::License_GPL,
                         // Copyright Statement
                         ki18n("(c) 2006-2011"),
                         // Optional text shown in the About box.
                         // Can contain any information desired.
                         ki18n("Some text..."),
                         // The program homepage string.
                         "http://example.com/",
                         // The bug report email address
                         "[email protected]");
    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
}

CMakeLists.txt

find_package(KDE4 REQUIRED)
include_directories( ${KDE4_INCLUDES} )
kde4_add_executable(printhelloworld main.cpp)
target_link_libraries(printhelloworld ${KDE4_KDEUI_LIBS} ${QT_QTGUI_LIBRARY})

Make and Run

To build and run it, make sure you have your build environment set up correctly as described here, then do:

cmake .
make
./printhelloworld

Next

Next: How to use the KDE print dialog in your programs