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

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51
votes
7answers
16k views

What is the best way to develop apps for Ubuntu?

I want to write applications for Ubuntu. I do not know much about programming but I want develop for Ubuntu. I am trying to learn Python right now. What do you think is the best way to develop apps ...
48
votes
8answers
2k views

How to get my software into Ubuntu?

As a developer of free software, I want to get my application into Ubuntu. Should I provide a source tarball and ask for packaging? Or should I create a package myself? Should I target Ubuntu ...
6
votes
5answers
1k views

Launchpad failed to build after “quickly submitubuntu” [closed]

I uploaded my python project by running "quickly submitubuntu", but it failed to build on Launchpad. "quickly submitubuntu" is supposed to add package dependencies automatically, but the error log ...
7
votes
3answers
2k views

How do I install the QML toolkit on 12.04? [closed]

I'm trying to install the Ubuntu QML toolkit. I've installed Qt5 successfully, but I'm failing on the QML toolkit. Below is the error information: W: Failed to fetch ...
37
votes
6answers
9k views

What is the best place to install user apps?

Occasionally I am installing application with something other than apt-get or the Package Manager. What is the "best practice" location for installing user apps? (/usr/bin/, /usr/local/bin/, /opt/, ...
19
votes
5answers
2k views

How do I start developing a lens for Unity?

I would like to know how to create one of those lenses for unity. I know how to program. but I don't know where to start. Are there certain libraries I should use or docs that I should read? Are there ...
8
votes
2answers
1k views

How do I start developing applications for Ubuntu on mobile devices?

I've come away a little confused on how to develop mobile apps for Ubuntu. First of all, do developers need the Ubuntu operating system to develop for Ubuntu? Is it possible to develop Ubuntu apps ...
17
votes
2answers
5k views

When to use gconf vs dconf?

Both gconf and dconf editors are available. Given the change to dconf should we still be using gconf at all? Do changes in gconf actually do anything when running 11.10?
19
votes
4answers
2k views

Can I develop ubuntu for phones apps in Python?

Does anyone know if we can develop apps for ubuntu for phones in Python ? PyQT / PySide would seem to support also QML. But can we use them on the phones ?
8
votes
1answer
269 views

Create a quickly app with build dependencies

I am creating a Quickly app in Ubuntu that depends on Python Twisted, which is available in the package python-twisted. How should I add python twisted as a dependency so that it will be installed ...
15
votes
17answers
3k views

Is there a Visual Studio style tool/IDE?

I have been developing in the windows space with Visual Studio for a while now with work, but I have also been using Ubuntu for a while and am keen to get into some software development for linux. I ...
14
votes
3answers
2k views

How to start an app with “Always On Top” set?

There are a couple of applications that I find myself marking as "Always on Top" every time I use them, so I wonder if there is a way to automatically set them as so, whatever way I start them (menu, ...
25
votes
5answers
837 views

How can I publish my project code online so someone can help me with it?

My local project has some code that is not working, and I'd like to show it to someone to have a look at and possibly give me a hand with it. This isn't a short snippet or a single file; there are ...
7
votes
1answer
224 views

How to troubleshoot Quickly packaging failures

I have created a Quickly app and I'm trying to create a package for distributing it through the Software Center. However, whenever I try one of the Quickly packaging commands (package, share, release ...
9
votes
1answer
813 views

How to create a new Quickly application template?

Cannot find the answer elsewhere, I'm asking for a documentation of the process to create a new template for quickly. I'm interested in writing a pyside (python + qt4) template like the pygtk one. ...
9
votes
1answer
352 views

How can I get started with developing apps for Ubuntu Touch?

I am interested in trying the new Ubuntu for phones OS development. (I am not an Ubuntu developer, I am new to Ubuntu. Impressed by the Ubuntu Touch preview, I got interested in learning how to ...
7
votes
4answers
2k views

“QtQuick version 2.0 is not installed” while trying to run CurrencyConverter Example for Ubuntu Phone

I was following the step-by-step guide on how to develop an Ubuntu Phone application but Qt Creator throughs the error message (module "QtQuick" version 2.0 is not installed) when I run it with ...
20
votes
2answers
2k views

What is the black header widget in some programs?

In some of the ubuntu programs (ubuntu control panel, system settings), but not e.g. in banshee, the top part of the window contains elements in dark tone (with the Ambience theme). But I cant find a ...
6
votes
3answers
2k views

Can't install qt-components-ubuntu because I'm using full release of QT 5.0.0

It appears that since I didn't install the beta1 version of QT5 from the ppa, I'm unable to use the Ubuntu components package. I have the released version QT5 already and not interested in installing ...
7
votes
2answers
572 views

What GTK widget is this?

Lately, I've seen the widget below appear in GTK applications. I can't find it in Glade. What is it?
15
votes
0answers
520 views

How do I put a package into the Ubuntu repositories? [duplicate]

Possible Duplicate: How to get my software into Ubuntu? I've created a Python application for Ubuntu. How do I package it and submit it for possible inclusion in the universe repository?
10
votes
4answers
2k views

Why Ubuntu.Components 0.1 missing from QTCreator?

First of all i need to create a "hello world" app using QML & QT Creator as described here http://developer.ubuntu.com/get-started/gomobile/ Second, when i was trying to install QML platform and ...
12
votes
1answer
334 views

Is there any web API for Software Center available?

I wonder if there is an API available for using contents from the Ubuntu Software Center on my webpage. I know The Ubuntu Apps Directory website contains an almost complete database of applications ...
19
votes
5answers
2k views

How do I develop an Ubuntu application in HTML and JS?

I am developing an app and I think HTML and JavaScript are better for the future, but I cannot find any tutorials (I need the app to use the system theme). Are there bindings for Unity, message menu ...
21
votes
7answers
2k views

How do I develop .NET apps on Ubuntu?

at college we use Microsoft .NET for developing applications. I recently switched to Ubuntu and would like to know similar tools for making apps on/for ubuntu.
17
votes
3answers
1k views

How to add support for the global menu to a python non-gtk, non-qt app?

I'm looking for good documentation (an example, tutorial, or guide) on how to add global menu support to a non-gtk, non-qt application. (In gtk it works 'magically' for the main menu...). The ...
11
votes
3answers
456 views

Does Quickly have an IDE of some sort?

I know quickly is supposed to make life easier for developers of all kinds, I'm just curious as to if there is an IDE for quickly (something like QtCreator or Monodevelop)? If not, as a part B, is ...
14
votes
1answer
412 views

How do I apply the fixes suggested from the App Review Board to my app?

I submitted my app to the Ubuntu Software Centre, and it just got reviewed by the Ubuntu App Review Board (ARB). I got an e-mail suggesting some fixes, and I'm not sure about the next steps I should ...
10
votes
2answers
617 views

Quickly template for PyQt?

Because I like Qt and Python, is there a Quickly template for PyQt similar to the PyGTK one?
9
votes
1answer
319 views

How do I add a slider to an AppIndicator?

I'm trying to add a slider to an AppIndicator similar to what the Sound Menu has. I've looked trough the code of the Sound Menu and found that I should be using libido-0.1 for that. Here's what I have ...
3
votes
2answers
189 views

Quickly packaging errors

I'm having some trouble packaging my Quickly (Python/GTK) app. Creating and packaging a new app (created using quickly create test and cd test; quickly package) works just fine, but the actual app ...
10
votes
3answers
2k views

How can I theme my Qt app to resemble one written in Gtk?

Mark Shuttleworth recently blogged about the decision to include the Qt libraries in the 11.10 release, with a followup from Jono Bacon. The thing that puts me off Qt apps is that they don't blend in ...
4
votes
1answer
193 views

Where does Quickly get the PPA name from?

I am trying to publish an app with Quickly: $ quickly share Get Launchpad Settings Launchpad connection is ok ppa:umpirsky:ppa does not exist. Please create it on launchpad if you want to push a ...
10
votes
4answers
331 views

How do I add a daemon to my Quickly application?

I am building a app with quickly, and I wanted to add a daemon that will run in the background. How do you do this?
10
votes
2answers
3k views

How to read dbus-monitor output?

i'm playing around with dbus-monitor to try and understand how dbus is working in Ubuntu environment. I have several questions in this regard: Could you please let me know how to read the following ...
25
votes
2answers
3k views

Connect WebKit WebView form to a Python callback?

I am writing a small Python and WebKit app; I am using WebKit as the UI for my app. What I want to do is to create an interactive element in WebKit (namely a combo box or a set of clickable regions) ...
13
votes
1answer
779 views

Is there a detailed API documentation on the python binding for appindicator?

I'm getting serous with a project of my own and need a good documentation on the appindicator module for python. What I've found so far: API documentation on dev.ubuntu.com Community wiki entry API ...
9
votes
5answers
2k views

How can I update the Ubuntu SDK preview from the Qt 5 Beta PPA to the Qt 5 Release PPA

When the Ubuntu SDK preview was announced on the 2nd of January, it was based on the Qt 5 Beta release (as Qt 5 had not yet been released and packaged for Ubuntu). At some point, the Qt 5 release was ...
16
votes
1answer
372 views

How do I get “Quickly” to use Git?

How do I get Quickly to use Git as its default version control instead of Bazaar?
15
votes
3answers
5k views

Installing gtk development environment

Not new to Ubuntu or programming but I am new to programming in C and gtk. Have been using Quickly for the odd program. I want to play around with C and gtk. What gtk packages do I need to install to ...
14
votes
4answers
2k views

How to program a status icon that will display in Ubuntu as well as in other distributions?

The application in question does some action (here connecting audio to network streams) and runs minimized if these actions were successful. Therefore a status icon is needed to display the state of ...
12
votes
1answer
203 views

How do I participate in the Ubuntu App Showdown?

How can I sign up for this event? I was reading this page: http://developer.ubuntu.com/showdown/ . My understanding is that I just need to mention my project to @ubuntuappdev on Twitter, and submit ...
4
votes
4answers
3k views

What 2D/3D engines and game SDKs are available?

What 2D/3D engines and game development SDKs are available that run natively on Ubuntu? Please limit one engine/sdk per answer - and include why you enjoy the engine/sdk.
12
votes
3answers
391 views

How do I call a dialog for authentication?

I am writing a gui program using wx module in python. In program whenever I am accessing a folder which requires root privilege then it asks password at terminal but I want to display the dialog to ...
10
votes
3answers
162 views

Install a 'recommended' package when user asks for corresponding action

Let's say that I am building an application to a DEB package, which has as recommended dependency a package, let's call it package1. So, package1, if installed, can provide extra functionality to my ...
5
votes
2answers
357 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 ...
3
votes
2answers
1k views

How to create a debian source package with QT Creator?

Well the title already states it. What do I need to do to get a package that I can submit to the Ubuntu Software Center?
1
vote
2answers
144 views

Why does “quickly share --ppa share” abort with a “can't create” error?

I can not figure out what I am doing wrong. The package builds ok with quickly package, I could submit it, but I can not update my ppa. Here is what I got: desgua@desguai7:~/quickly/sbk$ quickly ...
13
votes
2answers
205 views

How can a free, proprietary application be submitted to the Software Center?

I'd like to suggest to the developers of simfy that their desktop application be submitted to the Software Center. How should they go about doing this?
12
votes
1answer
236 views

Promoting an app in the Ubuntu Software Center through a ratings and reviews API

As an app author, I would like to promote my app in Ubuntu. One nice way to do it is to encourage users to submit their reviews and ratings to the Software Center. It would be really cool if I could ...

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