Writing applications for Ubuntu (including Ubuntu Touch) and questions about the application submission process to the Ubuntu Software Center. This covers both open source and commercial applications.

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6
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1answer
2k views

Building webkit from source

I tried to install the webkit applicaion from sources using this manual: https://help.ubuntu.com/community/WebKit When I type: ./autogen.sh --prefix=/usr the following error occurs: checking for ...
6
votes
1answer
3k views

How to create AppIndicator with Python?

I have no knowledge of Python, but because ubuntu recommends it i will use it for the appinidcator.. So i got these 2 files: and the code of the .py file is: #!/usr/bin/python import appindicator ...
6
votes
2answers
198 views

When to expect the results of the Ubuntu App Showdown Community Vote?

The Vote is closed since the 29th of Aug. Is everything OK? Shouldn't we be aware of the results already? I thought the counting was done automatically from the site that the voting was taking ...
6
votes
2answers
140 views

How to package an application that contains a binary that needs to be in $PATH?

I am packaging an application that contains binaries that would normally go in /usr/bin and a shared library that would go in /usr/lib. However, the package guidelines for submitting applications to ...
6
votes
2answers
290 views

How do I use OAuth from an Ubuntu Touch app?

I'm writing an Ubuntu Touch application in QML. I'd like to integrate with Trello. There are two ways to log into Trello in the API, one of which is OAuth, which I plan on using. What is the best way ...
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votes
3answers
2k views

Problems with QML Tool Kit Installation: “unmet dependencies: qt-components-ubuntu: … ”

I am following the directions on the page for Ubuntu App Development: http://developer.ubuntu.com/get-started/gomobile/ Command 1: sudo add-apt-repository ppa:canonical-qt5-edgers/qt5-beta1 ...
6
votes
1answer
115 views

Can an app in `/opt/extras` install themeable icons in `/usr/share`?

My application Variety Wallpaper Changer runs from /opt/extras and uses an indicator icon. I would like to make this indicator icon theme-specific. As far as I understand the standard way is to ...
6
votes
1answer
104 views

How can I submit an App to MyApps that is already in a PPA?

All my applications are already in my PPA in Launchpad. Now I want to submit them to MyApps. But MyApps insists in getting something to upload which makes no sense because everything is already ...
6
votes
2answers
486 views

Is it possible to alter and update the status icon of a running indicator applet?

I'm trying to create a simple application indicator that mimics the CPU load applet for the gnome-panel. I currently do this by updating (overwriting) the status icon of the indicator with the new ...
6
votes
1answer
220 views

Set action for submenu in AppIndicator

I am trying to build a simple indicator in C. This is my code: void make_indicator(){ //Making the indicator appindicator = app_indicator_new("My Indicator", ...
6
votes
1answer
141 views

My Rhythmbox plugin can't meet the Ubuntu Software Center “my-app” requirements

At http://developer.ubuntu.com/publish/my-apps-packages/ the following technical requirements are cited: Technical requirements In order for your application to be distributed in the Software ...
6
votes
1answer
2k views

How to use accelerators in Gtk?

I need to make an application in Vala, using Gtk, that supports keyboard accelerators that can be changed by the user. First, I add an entry to the global Gtk.AccelMap and then set the accel_path ...
6
votes
2answers
136 views

Is it possible to update the app indicator from code?

I use ruby-libappindicator bindings to manage ubuntu application indicators. I want to indicate if port 3000 is used by any application. Port checking isn't a problem but I also need to update the ...
6
votes
1answer
166 views

How to resolve “release command failed” in quickly app hello-world?

I am new to Ubuntu and new to programming. I watched the video on http://developer.ubuntu.com/get-started/ and the video made it look so easy. I followed all the steps and everything was going good ...
6
votes
1answer
415 views

What are the design guidelines for appindicator icons?

I am creating a Unity AppIndicator using Python + PyGObject, but I wish for it's icon to be in standard Ubuntu style. Where can I find appropriate guidelines for using colours (or is it just ...
5
votes
4answers
4k views

How do I get started with an Ubuntu friendly GUI framework?

I have a few small scripts that I use for routine tasks. They require simple parameters to run. Rather than running them from the terminal, I'd prefer to pick something from the menu, be presented ...
5
votes
2answers
2k views

How to add vte terminal widget in GTK3?

I'm trying to add vte widget in my application and the examples I've found use .fork_command() to execute a command in that widget. But according to ...
5
votes
1answer
99 views

Is a non-trivial plug-in for some application considered an app?

In the context of the Ubuntu App Showdown, if a useful plug-in for an existing application (in my case blender, but it could be anything) were to be developed, could it be considered?
5
votes
2answers
736 views

How can I install commonly used developer tools?

Is there a meta-package for installing commonly used developer tools such as cmake, autoconf, g++, etc.? The intent is to have roughly the same range of command-line tools as one has after installing ...
5
votes
3answers
628 views

App Inventor for the Ubuntu platform?

Will Ubuntu have something like Google App Inventor to easily develop applications for the Ubuntu platform? Is Quickly intended to do that? I heard Ubuntu is planing to make easy and fun to develop ...
5
votes
2answers
645 views

How to get rid of the background gradient of the inline GtkToolbar?

When you run the below code, it will show an inline toolbar in a window. Notice how the inline toolbar has a stand-out backbround. Is there a way to apply CSS to get rid of it and make blend with ...
5
votes
2answers
3k views

Changing Python default in 12.04 LTS

I have downloaded and installed python 3.2.3 for Ubuntu/Debian. Also IDLE IDE for 3.2.3. If I execute IDLE for 3.2.3 explicitely, 3.2.3 runs under IDLE and all is well. But if I go to a terminal ...
5
votes
3answers
2k views

How to detect a computer's physical screen size in GTK

I've come across this bug while writing my app. In short, the app's window size is fixed, which does not work well with smaller screens such as in netbooks. In those, the lower buttons are off the ...
5
votes
2answers
432 views

How to remove my application's appindicator programmatically?

I know how to add an appindicator menu from my application, but I can't seem to find how to remove it but still keep my program running in the background. Is there a way to do this?
5
votes
2answers
1k views

Can glade be used with python pygi introspection?

I once got started on a PyGtk and Glade tutorial but never finished it. Recently I saw that PyGtk is being depreciated in favor of using introspection at ...
5
votes
3answers
201 views

Sockets in Ubuntu Touch Apps

I am creating an IRC client for the Ubuntu App Showdown. I need a way to be able to access an IRC server in QML (or JavaScript). What is the best way to accomplish this?
5
votes
2answers
735 views

PYGTK to PYGI: gtk.timeout_add equivalent

I have converted some Python code to use PYGI but I can't figure out how to convert this line: gtk.timeout_add(PING_FREQUENCY * 1000, self.doWork) To by clear, since I don't really know the ...
5
votes
3answers
5k views

Find version of development library from command line?

I installed the c++ boost development libraries using Ubuntu software centre. The problem is that it was quite a long time ago and I cannot remember where they are installed nor what version they ...
5
votes
2answers
365 views

How do I translate a quickly project?

I am just getting started with using quickly and I have a small project that's starting to take shape. Right now I would like to add a translation to my project. I already noticed that quickly ...
5
votes
1answer
816 views

What programming languages are scopes written in?

I'd like to get started writing a Scope for Ubuntu. What programming languages are available and what should I choose?
5
votes
1answer
165 views

Can I use old code by myself to build on for my entry in the Ubuntu App Showdown contest?

Or does it have to be started completely from scratch at 18th of June?
5
votes
2answers
538 views

Are Ubuntu Phone apps compatible across different devices? And if yes, how?

I know that Android apps are developed in Java because running all applications in a virtual machine grants less compatibility issues. IOS instead uses objective-C because it is developed to run just ...
5
votes
1answer
217 views

upstart init script remains on apt-get remove

I just created my first .deb file ever from a Python script. I included a package.upstart file under package/debian and all installed great. However, I noticed that apt-get remove package leaves the ...
5
votes
1answer
944 views

How can I make my own custom desktop widgets?

A simple solution like HTML widgets and a transparent Webkit window would be ideal. I'm trying to make a simple background widget framework such that I can easily customize my desktop with some CSS ...
5
votes
1answer
99 views

How do I update my own application in the software center?

Some applications use web services to provide services to users (especially Unity lenses). Things with APIs that might change, or things that might be updated. So what happens when someone submits a ...
5
votes
2answers
606 views

How do I package my application for the Ubuntu Software Centre?

I'm an old hand at software development, but not so experienced with packaging. I've built one dpkg before, but it wasn't a source package. I'm working on getting an application submitted to the ...
5
votes
2answers
211 views

How does Canonical report and transfer Software Center sales money to app developers?

I would like to clarify some details of the derivation earned from the sale of application money. If I understood correctly, at the end of each quarter you will send us email to report the amount of ...
5
votes
4answers
6k views

Can't build gcc anymore since upgrade to 11.10

On Monday I've upgraded to from Ubuntu 11.04 (my initial installation) to 11.10 and now I can't build gcc from source anymore. Since I forgot to uninstall the gcc package before the upgrade, Ubuntu ...
5
votes
2answers
158 views

How long does it take to get an application reviewed for Ubuntu?

I submitted a package around three weeks ago, and so far it's status is still "Pending"
5
votes
1answer
64 views

What does functional_qml_applicationName_matches_manifest mean?

I submitted an application to the click store but it comes back with this error:- functional_qml_applicationName_matches_manifest What does this mean and how do I fix it?
5
votes
1answer
189 views

How to insert Video element in my Ubuntu application?

I saw on some sites that you can insert videos with the Video element by importing Qt 4.7 and QtMultimediaKit 1.1 . But I have an error by compiling the project (it's a tabbed touch UI project): ...
5
votes
2answers
2k views

Developing for ubuntu phone: where is the SDK?

I was quickly reading this introduction to QML for Ubuntu Phones, now I was honestly expecting something more than that from Canonical. My questions are: where is a real SDK with libs ? All I can ...
5
votes
1answer
1k views

Why won't Glade let me change the button content?

In Glade, I go to add a button, and try to add a label/image; however, the stock button and label fields are faded, and I cannot add anything to them. Why does it do this? How do get Glade to allow me ...
5
votes
2answers
173 views

How to rename an application while developing with Quickly

I've been developing an application using PyGI and Quickly, and I now need to rename it. Is there any quick way to change all of the app name references in a Quickly application, or will I just need ...
5
votes
2answers
131 views

When will the applications submitted to the Ubuntu App Showdown be available for download via the Software Centre? [closed]

The deadline for submitting applications has passed and now the applications are being reviewed. OMG! Ubuntu points out that the applications will be available on the Software Centre by the end of ...
5
votes
1answer
290 views

Is there a standard REST API for DBus communication?

I've found this, but I'm trying not to borrow code for my application. The reasoning is that if you're writing a local HTML5 App, you may want to call some DBus api from javascript(like ubuntuone ...
5
votes
1answer
326 views

Any good place to get started with Ubuntu desktop widget development?

Any good place to get started with Ubuntu desktop based widget development or any plugins based development? I'm looking for something similar to Yahoo Widgets. Are there any SDK ( Software ...
5
votes
2answers
434 views

How do I program the GNOME Clock Calendar with Python?

I want to develop a little application and I want to add events to the calendar of the Gnome panel clock. How does it work? Is there a D-Bus Interface I can use? Or can I directly access the ...
5
votes
1answer
1k views

Are Qt Quick Controls available on Ubuntu 13.10?

I was looking to do UI development in QML, and I really want it to look native. I found the QtQuick.Controls (http://qt-project.org/doc/qt-5.1/qtquickcontrols/qtquickcontrols-index.html), but when I ...
5
votes
1answer
660 views

QML/Qt Development path verses “Quickly” and Gtk

It seems like recently the path Ubuntu is moving towards is to have code developed with QML and Qt, and that appears to sync with their move to be able to target tablets, phones, TV devices and the ...