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

Revision as of 19:08, 25 September 2011

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

                         "submit@bugs.kde.org");

    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

@@ Line 3: / Line 3: @@
 Print '''Hello World''' on your printer. There will be no more dialog to confirm how many pages you want or the like.
-== The code ==
+== The files ==
 '''main.cpp'''
 <syntaxhighlight lang="cpp-qt" line>
@@ Line 55: / Line 55: @@
 </syntaxhighlight>
-== How to compile ==
+'''CMakeLists.txt'''
-=== CMakeLists.txt ===
 <syntaxhighlight lang="text">
 find_package(KDE4 REQUIRED)
@@ Line 67: / Line 64: @@
 === Make and Run ===
-To build and run it, do:
+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