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[[image:introtokdetutorial3.png|frame|center]]
 
==Abstract==
 
==Abstract==
−
 
+
We're going to introduce the concept of actions. Actions are a unified way of supplying the user with ways to interact with your program. Say, for example, we want to let the user clear the text box by clicking a button in the toolbar, from an option in the File menu or through a keyboard shortcut; we can provide all of those through one {{class|KAction}}.
 
==Prerequisites==
 
==Prerequisites==
 
* [[Development/Tutorials/Programming_Tutorial_KDE_4/Using_KMainWindow|Tutorial 2 - KMainWindow]]
 
* [[Development/Tutorials/Programming_Tutorial_KDE_4/Using_KMainWindow|Tutorial 2 - KMainWindow]]
 +
 +
==KAction==
 +
===Creating Your Own===
 +
===KStandardAction===
 +
 +
==The Code==
 +
===mainwindow.h===
 +
<code cppqt n>
 +
#ifndef MAINWINDOW_H
 +
#define MAINWINDOW_H
 +
 +
#include <KMainWindow>
 +
#include <KTextEdit>
 +
 +
class MainWindow : public KMainWindow
 +
{
 +
  public:
 +
    MainWindow(QWidget *parent=0);
 +
 +
  private:
 +
    KTextEdit* textArea;
 +
    void setupActions();
 +
};
 +
 +
#endif
 +
</code>
 +
===mainwindow.cpp===
 +
<code cppqt n>
 +
#include "mainwindow.h"
 +
 +
#include <KApplication>
 +
#include <KAction>
 +
#include <KStandardAction>
 +
 +
MainWindow::MainWindow(QWidget *parent) : KMainWindow(parent)
 +
{
 +
  textArea = new KTextEdit;
 +
  setCentralWidget(textArea);
 +
 +
  setupActions();
 +
}
 +
 +
void MainWindow::setupActions()
 +
{
 +
  KStandardAction::quit(kapp, SLOT(quit()), actionCollection());
 +
 +
  KAction* clearAction = new KAction(actionCollection(), "clear");
 +
  clearAction->setText("Clear");
 +
  clearAction->setIcon(KIcon("filenew"));
 +
  clearAction->setShortcut(Qt::CTRL+Qt::Key_W);
 +
  connect(clearAction, SIGNAL(triggered(bool)),
 +
          textArea, SLOT(clear()));
 +
 +
  setupGUI();
 +
}
 +
</code>
 +
===main.cpp===
 +
<code cppqt n>
 +
#include <KApplication>
 +
#include <KAboutData>
 +
#include <KCmdLineArgs>
 +
 +
#include "mainwindow.h"
 +
 +
int main (int argc, char *argv[])
 +
{
 +
  KAboutData aboutData( "tutorial3", "Tutorial 3",
 +
"1.0", "A simple text area using KAction etc.", KAboutData::License_GPL,
 +
"(c) 2006" );
 +
  KCmdLineArgs::init( argc, argv, &aboutData );
 +
  KApplication app;
 +
 +
  MainWindow* window = new MainWindow();
 +
  window->show();
 +
  return app.exec();
 +
}
 +
</code>
 +
 +
==Putting the actions in the menus and toolbars==
 +
===XMLGUI===
 +
===tutorial3ui.rc===
 +
<code xml n>
 +
<!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
 +
<kpartgui name="tutorial3" version="1">
 +
  <ToolBar name="mainToolBar" >
 +
    <text>Main Toolbar</text>
 +
    <Action name="clear" />
 +
  </ToolBar>
 +
  <MenuBar>
 +
    <Menu name="file" >
 +
      <text>&amp;File</text>
 +
      <Action name="clear" />
 +
    </Menu>
 +
  </MenuBar>
 +
</kpartgui>
 +
</code>
  
 
==CMake==
 
==CMake==
  
 
<code ini n>
 
<code ini n>
 +
PROJECT(tutorial3)
 +
 +
FIND_PACKAGE(KDE4 REQUIRED)
 +
INCLUDE_DIRECTORIES( ${KDE4_INCLUDES} )
 +
 +
SET(tutorial3_SRCS
 +
main.cpp
 +
mainwindow.cpp
 +
)
 +
 +
KDE4_ADD_EXECUTABLE(tutorial3 ${tutorial3_SRCS})
 +
 +
TARGET_LINK_LIBRARIES( tutorial3 ${KDE4_KDEUI_LIBS})
 +
 +
install(TARGETS tutorial3 DESTINATION ${BIN_INSTALL_DIR})
 +
install( FILES tutorial3ui.rc DESTINATION  ${DATA_INSTALL_DIR}/tutorial3 )
 
</code>
 
</code>
 
==Moving On==
 
==Moving On==

Revision as of 21:41, 3 January 2007

Introtokdetutorial3.png

Contents

Abstract

We're going to introduce the concept of actions. Actions are a unified way of supplying the user with ways to interact with your program. Say, for example, we want to let the user clear the text box by clicking a button in the toolbar, from an option in the File menu or through a keyboard shortcut; we can provide all of those through one KAction.

Prerequisites

KAction

Creating Your Own

KStandardAction

The Code

mainwindow.h

  1. ifndef MAINWINDOW_H
  2. define MAINWINDOW_H
  1. include <KMainWindow>
  2. include <KTextEdit>

class MainWindow : public KMainWindow { 

 public:
   MainWindow(QWidget *parent=0);

 private:
   KTextEdit* textArea;
   void setupActions();

};

  1. endif

mainwindow.cpp

  1. include "mainwindow.h"
  1. include <KApplication>
  2. include <KAction>
  3. include <KStandardAction>

MainWindow::MainWindow(QWidget *parent) : KMainWindow(parent) { 

 textArea = new KTextEdit;
 setCentralWidget(textArea);

 setupActions();

}

void MainWindow::setupActions() { 

 KStandardAction::quit(kapp, SLOT(quit()), actionCollection());

 KAction* clearAction = new KAction(actionCollection(), "clear");
 clearAction->setText("Clear");
 clearAction->setIcon(KIcon("filenew"));
 clearAction->setShortcut(Qt::CTRL+Qt::Key_W);
 connect(clearAction, SIGNAL(triggered(bool)), 
         textArea, SLOT(clear()));

 setupGUI();

}

main.cpp

  1. include <KApplication>
  2. include <KAboutData>
  3. include <KCmdLineArgs>
  1. include "mainwindow.h"

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

 KAboutData aboutData( "tutorial3", "Tutorial 3",

"1.0", "A simple text area using KAction etc.", KAboutData::License_GPL, "(c) 2006" ); 

 KCmdLineArgs::init( argc, argv, &aboutData );
 KApplication app;

 MainWindow* window = new MainWindow();
 window->show();
 return app.exec();

}

Putting the actions in the menus and toolbars

XMLGUI

tutorial3ui.rc

<!DOCTYPE kpartgui SYSTEM "kpartgui.dtd"> <kpartgui name="tutorial3" version="1"> 

 <ToolBar name="mainToolBar" >
   <text>Main Toolbar</text>
   <Action name="clear" />
 </ToolBar>
 <MenuBar>
   <Menu name="file" >
     <text>&File</text>
     <Action name="clear" />
   </Menu>
 </MenuBar>

</kpartgui>

CMake

PROJECT(tutorial3)

FIND_PACKAGE(KDE4 REQUIRED) INCLUDE_DIRECTORIES( ${KDE4_INCLUDES} )

SET(tutorial3_SRCS main.cpp mainwindow.cpp )

KDE4_ADD_EXECUTABLE(tutorial3 ${tutorial3_SRCS})

TARGET_LINK_LIBRARIES( tutorial3 ${KDE4_KDEUI_LIBS})

install(TARGETS tutorial3 DESTINATION ${BIN_INSTALL_DIR}) install( FILES tutorial3ui.rc DESTINATION ${DATA_INSTALL_DIR}/tutorial3 )

Moving On

Retrieved from ‘http://techbase.kde.org/index.php?title=Development/Tutorials/Using_KActions&oldid=6360’

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