| -rw-r--r-- | examples/simple/simple.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/examples/simple/simple.cpp b/examples/simple/simple.cpp new file mode 100644 index 0000000..a0bc308 --- a/dev/null +++ b/examples/simple/simple.cpp @@ -0,0 +1,89 @@ +#include <qlabel.h> // a label +#include <qpushbutton.h> // the header file for the QPushButton +#include <qlayout.h> + +#include <qpe/qpeapplication.h> // the QPEApplication + +#include <opie/oapplicationfactory.h> // a template + macro to save the main method and allow quick launching + +#include "simple.h" + +/* + * implementation of simple + */ + +/* + * The factory is used for quicklaunching + * It needs a constructor ( c'tor ) with at least QWidget, const char* and WFlags as parameter and a static QString appName() matching the TARGET of the .pro + * + * Depending on the global quick launch setting this will create + * either a main method or one for our component plugin system + */ + +OPIE_EXPORT_APP( OApplicationFactory<Simple> ) + +Simple::Simple( QWidget* parent, const char* name, WFlags fl ) + : QWidget( parent, name, fl ) { + + /* + * sets the caption of this toplevel widget + * put all translatable string into tr() + */ + setCaption(tr("My Simple Application") ); + + /* + * A simple vertical layout + * either call layout->setAutoAdd( true ) + * or use layout->addWidget( wid ) to add widgets + */ + QVBoxLayout *layout = new QVBoxLayout( this ); + layout->setSpacing( 8 ); + layout->setMargin( 11 ); + + /* + * creates a label + * The first parameter is this widget so the Label is a child + * of us and will be deleted when we're deleted. + */ + QLabel *lbl = new QLabel( this, "a name for the label" ); + lbl->setText( tr("Click on the button or follow the white rabbit") ); + layout->addWidget( lbl ); + + + /* creates a button as child of this widget */ + m_button = new QPushButton(this); + /* + * another way to call tr. The first parameter is the string + * to translate and the second a hint to the translator + */ + m_button->setText( tr("Quit", "translatable quit string" ) ); + layout->addWidget( m_button ); + + /* + * Now we bring the action into it. The power of qt is the dynamic + * signal and slots model + * Usage is simple connect m_buttons clicked signal to our + * slotQuit slot. + * We could also have connected a SIGNAL to a SIGNAL or the clicked + * signal directly to qApp and SLOT(quit() ) + */ + connect( m_button, SIGNAL(clicked() ), + this, SLOT( slotQuit() ) ); +} + +/* + * Our destructor is empty because all child + * widgets and layouts will be deleted by Qt. + * Same applies to QObjects + */ +Simple::~Simple() { + +} + +void Simple::slotQuit() { + /* + * we will close this window and Qt will recognize that + * the last window was closed and initiate a shutdown + */ + close(); +} |