Difference between revisions of "Talk:Development/Tutorials/First program"

Jump to: navigation, search
(KApplication use)
 
(8 intermediate revisions by 4 users not shown)
Line 13: Line 13:
 
Does the g++ command work for you as described?
 
Does the g++ command work for you as described?
 
I needed to add -lQtXml, lQtSvg and lQtNetwork.
 
I needed to add -lQtXml, lQtSvg and lQtNetwork.
 +
 +
: I'm getting a 'huge' string of error messages in the underlying include/ files, things like
 +
<code>
 +
include/KDE/../kmessagebox.h:1128: error: expected constructor, destructor, or type conversion before ‘(’ token
 +
</code>
 +
but hundreds, possibly thousands of errors apparently affecting nearly every header.
 +
::I personally haven't tried the g++ method, that was added by someone else. Does linking against those libraries fix the errors? Does it work for you with the cmake method? --[[User:Milliams|milliams]] 20:47, 25 January 2008 (CET)
 +
:::Thanks you, Milliams, it complies with cmake.  I copied the g++ instructions, including the additional options, straight from the page and still no joy.
 +
 +
== Make and run before explaining the code ==
 +
 +
As far as I can see,
 +
it presents the code,
 +
explains it,
 +
shows how to build with g++ (without cmake),
 +
building with cmake,
 +
finally running it
 +
 +
Well, I would prefer it to present code and run it (with no explaining), like to a monkey. After showing it works, explaining why it works or how it works.
 +
I would find that much more fun this way.
 +
Got any ideas why it should not be that way?
 +
--Bogdan Bivolaru
 +
 +
== The constructor of KAboutData has changed ==
 +
 +
...or maybe not, I don't know, but in the API doc it is defined with the last two arguments as QByteArray datatype.
 +
I was translating this tutorial in italian and, in order to solve this problem, I'd added QByteArray("string...") to the homepage and bugs mail arguments in the main.cpp code (with the right #include of course).
 +
Now it build and run like a charm. Maybe it is needed to propagate this little mod over all the tutorial serie? --[[User:Fresbeeplayer|Fresbeeplayer]] 12:18, 28 November 2008 (UTC)
 +
 +
 +
== How KApplication object has been used ==
 +
 +
The tutorial creates KApplication object 'app'. But this object has not been used in the program. When I tried compiling after commenting the line 'KApplication app', it gave an error saying I should create a KApplicaion object before I can create other windows. Can some one explain me what is the black magic it is doing there?

Latest revision as of 05:01, 27 September 2009

Adding authors to wiki pages seems counterintuitive to me. The wiki is editable by everybody. Why does it matter who the author of a tutorial is? IMHO the only thing that matters is that the tutorial is kept up to date. --Mattr 03:31, 4 January 2007 (CET)

I agree with Matt. I usually add a Initial Author: at the bottom for pages from the old developer wiki code, because they wrote it with often no explicit copyright information. See also this page --Dhaumann 17:36, 4 January 2007 (CET)

Contents

[edit] ‘ki18n’ was not declared in this scope

I don't know if this is the place to post this, but I tried to follow this tutorial and get an "error: ‘ki18n’ was not declared in this scope", when trying to compile using the big command gcc main.cpp ...

Well I change a little the code so it now compiles under KDE4, it seems that the constructor of KAboutDate was changed...

[edit] Build

Does the g++ command work for you as described? I needed to add -lQtXml, lQtSvg and lQtNetwork.

I'm getting a 'huge' string of error messages in the underlying include/ files, things like

include/KDE/../kmessagebox.h:1128: error: expected constructor, destructor, or type conversion before ‘(’ token but hundreds, possibly thousands of errors apparently affecting nearly every header.

I personally haven't tried the g++ method, that was added by someone else. Does linking against those libraries fix the errors? Does it work for you with the cmake method? --milliams 20:47, 25 January 2008 (CET)
Thanks you, Milliams, it complies with cmake. I copied the g++ instructions, including the additional options, straight from the page and still no joy.

[edit] Make and run before explaining the code

As far as I can see,

it presents the code,
explains it, 
shows how to build with g++ (without cmake), 
building with cmake, 
finally running it

Well, I would prefer it to present code and run it (with no explaining), like to a monkey. After showing it works, explaining why it works or how it works. I would find that much more fun this way. Got any ideas why it should not be that way? --Bogdan Bivolaru

[edit] The constructor of KAboutData has changed

...or maybe not, I don't know, but in the API doc it is defined with the last two arguments as QByteArray datatype. I was translating this tutorial in italian and, in order to solve this problem, I'd added QByteArray("string...") to the homepage and bugs mail arguments in the main.cpp code (with the right #include of course). Now it build and run like a charm. Maybe it is needed to propagate this little mod over all the tutorial serie? --Fresbeeplayer 12:18, 28 November 2008 (UTC)


[edit] How KApplication object has been used

The tutorial creates KApplication object 'app'. But this object has not been used in the program. When I tried compiling after commenting the line 'KApplication app', it gave an error saying I should create a KApplicaion object before I can create other windows. Can some one explain me what is the black magic it is doing there?


This page was last modified on 27 September 2009, at 05:01. This page has been accessed 3,870 times. Content is available under Creative Commons License SA 3.0 as well as the GNU Free Documentation License 1.2.
KDE® and the K Desktop Environment® logo are registered trademarks of KDE e.V.Legal