Development/Tutorials/First program - Revision history

AnneW at 18:44, 12 July 2012

2012-07-12T18:44:33Z

AnneW: Marked this version for translation

2012-06-09T16:07:39Z

Marked this version for translation

AnneW: Separated headings from body as requested by translators

2012-06-09T16:06:02Z

Separated headings from body as requested by translators

Phanect: Fioxed incorrect tag to

2012-06-09T12:03:39Z

Fioxed incorrect tag <language /> to <languages />

Phanect: Added and tags

2012-06-03T04:13:35Z

Added <language /> and <translate> tags

Gallaecio: /* Abstract */

2012-04-16T16:55:42Z

‎Abstract

Yecril71pl: /* The Code */ oops, dead code

2012-03-12T20:08:49Z

‎The Code: oops, dead code

Yecril71pl: /* The Code */ return failure on No

2012-03-12T20:07:55Z

‎The Code: return failure on No

Tstaerk: /* Abstract */

2011-09-23T15:28:58Z

‎Abstract

Tstaerk: sorry, this link points to rubbish

2011-09-23T15:28:45Z

sorry, this link points to rubbish

← Older revision		Revision as of 18:44, 12 July 2012
Line 1:		Line 1:
	<languages />		<languages />

−	~~{{Template:I18n/Language Navigation Bar\|Development/Tutorials/First_program}}~~
	{{TutorialBrowser\|		{{TutorialBrowser\|

@@ Line 6: / Line 6: @@
 <translate>
 series=Beginner Tutorial|
 name=Hello World|
 pre=[http://mindview.net/Books/TICPP/ThinkingInCPP2e.html C++], [http://qt.nokia.com Qt], [[Getting_Started/Build|Building KDE]]|
 next=[[Development/Tutorials/Using_KXmlGuiWindow|Tutorial 2 - KXmlGuiWindow]]|
 reading=[[Development/Tutorials/CMake|CMake]]
 }}
-==Abstract==
+==Abstract== <!--T:6-->
 Your first program shall greet the world with a friendly "Hello World", what else? For that, we will use a {{class|KMessageBox}} and customise one of the buttons.
 [[image:introtokdetutorial1.png|frame|center]]
 {{Tip|To get more information about any class you come across, you can use the ‘kde’ search engine. For example, to look for information about KMessageBox, just type "kde:kmessagebox" into Konqueror, Rekonq or KRunner, and you’ll be taken to the documentation.}}
 {{Tip|
 You might want to use [[qtcreator|QtCreator]] as IDE for your projects.
 }}
-==The Code==
+==The Code== <!--T:10-->
 All the code we need will be in one file, <tt>main.cpp</tt>. Create that file with the code below:
 <syntaxhighlight lang="cpp-qt">
 #include <cstdlib>
 #include <KApplication>
 #include <KAboutData>
@@ Line 40: / Line 50: @@
 #include <KLocale>
 int main (int argc, char *argv[])
+{
@@ Line 66: / Line 77: @@
                           "submit@bugs.kde.org");
-     KCmdLineArgs::init( argc, argv, &aboutData );
+     <!--T:14-->
      KApplication app;
      KGuiItem yesButton( i18n( "Hello" ), QString(),
@@ Line 79: / Line 91: @@
 The first KDE specific code we come across in this program is {{class|KAboutData}}. This is the class used to store information about the program such as a short description, authors or license information. Pretty much every KDE application should use this class.
 Then we come to {{class|KCmdLineArgs}}. This is the class one would use to specify command line switches to, for example, open the program with a specific file. However, in this tutorial, we simply initialise it with the {{class|KAboutData}} object we created so we can use the <tt>--version</tt> or <tt>--author</tt> switches.
 Then we create a {{class|KApplication}} object. This needs to be done exactly once in each program since it is needed for things such as [[Development/Tutorials/Localization/i18n|i18n]].
 Now we've done all the necessary KDE setup, we can move on to doing interesting things with our application. We're going to create a popup box but we're going to customise one of the buttons. To do this customisation, we need to use a {{class|KGuiItem}} object. The first argument in the {{class|KGuiItem}} constructor is the text that will appear on the item (in our case, a button). Then we have an option of setting an icon for the button but we don't want one so we just give it <tt>QString()</tt>. We then set the tooltip (what appears when you hover over an item) and finally the "What's This?" (accessed through right-clicking or Shift-F1) text.
 Now we have our item, we can create our popup. We call the <tt>{{class|KMessageBox}}::questionYesNo()</tt> function which, by default, creates a message box with a "Yes" and a "No" button. The second argument is the text that will appear in the message box above the buttons. The third is the caption the window will have and finally we set the KGuiItem for (what would normally be) the "Yes" button to the <tt>KGuiItem yesButton</tt> we created.
 Note that all user-visible text is passed through the i18n() function; this is necessary for the UI to be translatable. More information on localization can be found in the [[Development/Tutorials/Localization/i18n|localization tutorial]].
 We're all done as far as the code is concerned. Now to build it and try it out.
-== Build ==
+== Build == <!--T:21-->
 You want to [[Development/Tutorials/CMake|use CMake]] for your build environment. You provide a file CMakeLists.txt, cmake uses this file to generate all Makefiles out of it.
-=== CMakeLists.txt ===
+=== CMakeLists.txt === <!--T:23-->
 Create a file named CMakeLists.txt in the same directory as main.cpp with this content:
 <syntaxhighlight lang="cmake">
@@ Line 110: / Line 130: @@
 The <tt>find_package()</tt> function locates the package that you ask it for (in this case KDE4) and sets some variables describing the location of the package's headers and libraries. In this case we will use the <tt>KDE4_INCLUDES</tt> variable which contains the path to the KDE4 header files.
 In order to allow the compiler to find these files, we pass that variable to the <tt>include_directories()</tt> function which adds the KDE4 headers to the header search path.
 Next we create a variable called <tt>tutorial1_SRCS</tt> using the <tt>set()</tt> function. In this case we simply set it to the name of our only source file.
 Then we use <tt>kde4_add_executable()</tt> to create an executable called <tt>tutorial1</tt> from the source files listed in our <tt>tutorial1_SRCS</tt> variable. Afterwards, we link our executable to the KDE4 kdeui library using <tt>target_link_libraries()</tt> and the <tt>KDE4_KDEUI_LIBS</tt> variable which was set by the <tt>find_package()</tt> function. The line starting with <tt>install</tt> writes a default "install" target into the Makefile.
-=== Make And Run ===
+=== Make And Run === <!--T:28-->
 To compile, link and install your program, you must have several software installed, e.g. kdelibs, cmake, make and gcc-c++. To be sure you have everything, best follow [[Getting_Started/Build/Environment|this install guide]].
 You can invoke CMake and make manually:
 <syntaxhighlight lang="bash">
@@ Line 129: / Line 154: @@
 </syntaxhighlight>
 And launch it with:
 <syntaxhighlight lang="bash">
@@ Line 134: / Line 160: @@
 </syntaxhighlight>
-==Moving On==
+==Moving On== <!--T:32-->
 Now you can move on to [[Development/Tutorials/Using_KXmlGuiWindow|using KXmlGuiWindow]].
 [[Category:C++]]
 </translate>

@@ Line 1: / Line 1: @@
 <languages />
 {{Template:I18n/Language Navigation Bar|Development/Tutorials/First_program}}
 {{TutorialBrowser|
 series=Beginner Tutorial|
@@ Line 17: / Line 18: @@
 ==Abstract==
 Your first program shall greet the world with a friendly "Hello World", what else? For that, we will use a {{class|KMessageBox}} and customise one of the buttons.
 [[image:introtokdetutorial1.png|frame|center]]
-{{tip|To get more information about any class you come across, you can use the ‘kde’ search engine. For example, to look for information about KMessageBox, just type "kde:kmessagebox" into Konqueror, Rekonq or KRunner, and you’ll be taken to the documentation.}}
+{{Tip|To get more information about any class you come across, you can use the ‘kde’ search engine. For example, to look for information about KMessageBox, just type "kde:kmessagebox" into Konqueror, Rekonq or KRunner, and you’ll be taken to the documentation.}}
-{{tip|
+{{Tip|
 You might want to use [[qtcreator|QtCreator]] as IDE for your projects.
 }}
 ==The Code==
 All the code we need will be in one file, <tt>main.cpp</tt>. Create that file with the code below:
 <syntaxhighlight lang="cpp-qt">
@@ Line 89: / Line 92: @@
 == Build ==
 You want to [[Development/Tutorials/CMake|use CMake]] for your build environment. You provide a file CMakeLists.txt, cmake uses this file to generate all Makefiles out of it.
 === CMakeLists.txt ===
 Create a file named CMakeLists.txt in the same directory as main.cpp with this content:
 <syntaxhighlight lang="cmake">
@@ Line 112: / Line 117: @@
 === Make And Run ===
 To compile, link and install your program, you must have several software installed, e.g. kdelibs, cmake, make and gcc-c++. To be sure you have everything, best follow [[Getting_Started/Build/Environment|this install guide]].
@@ Line 129: / Line 135: @@
 ==Moving On==
 Now you can move on to [[Development/Tutorials/Using_KXmlGuiWindow|using KXmlGuiWindow]].
-</translate>
 [[Category:C++]]

← Older revision		Revision as of 12:03, 9 June 2012
Line 1:		Line 1:
−	<~~language~~ />	+	<languages />

	<translate>		<translate>

@@ Line 1: / Line 1: @@
 {{Template:I18n/Language Navigation Bar|Development/Tutorials/First_program}}
 {{TutorialBrowser|
@@ Line 127: / Line 130: @@
 ==Moving On==
 Now you can move on to [[Development/Tutorials/Using_KXmlGuiWindow|using KXmlGuiWindow]].
+</translate>
 [[Category:C++]]

@@ Line 69: / Line 69: @@
          (0, i18n( "Hello World" ), i18n( "Hello" ), yesButton )
          == KMessageBox ::Yes? EXIT_SUCCESS: EXIT_FAILURE;
+}
 </syntaxhighlight>

@@ Line 26: / Line 26: @@
 All the code we need will be in one file, <tt>main.cpp</tt>. Create that file with the code below:
 <syntaxhighlight lang="cpp-qt">
 #include <KApplication>
 #include <KAboutData>
@@ Line 63: / Line 65: @@
                          i18n( "This is a tooltip" ),
                          i18n( "This is a WhatsThis help text." ) );
-     KMessageBox::questionYesNo( 0, i18n( "Hello World" ),
+     return
-                                i18n( "Hello" ), yesButton );
+        KMessageBox ::questionYesNo
      return 0;
+}

@@ Line 20: / Line 20: @@
 {{tip|
-You might want to use [[QtCreator]] as IDE for your projects.
+You might want to use [[qtcreator|QtCreator]] as IDE for your projects.
 }}

@@ Line 20: / Line 20: @@
 {{tip|
-You might want to use KDevelop for your projects, which does many nice things like code completion, easy access to API documentation or debugging support.
+You might want to use [[QtCreator]] as IDE for your projects.
-−
-Read [[Getting_Started/Set_up_KDE_4_for_development#KDevelop|this tutorial]] to set up KDevelop correctly for this task. You probably want to check if the setup is working by testing opening an existing KDE 4 application with KDevelop first.
-−
-You still need to edit the CMake files by hand though.
 }}