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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9
votes
1answer
188 views

What is the difference between the release, share and submitubuntu commands in Quickly?

There are 3 different commands in Quickly to release a new version of an app into a PPA release - Posts a release of your project to a PPA on launchpad so that users can install the application on ...
7
votes
3answers
1k views

How do I migrate from systray to AppIndicators?

I am considering forking Parcellite and making it use AppIndicators now that Ubuntu has dropped support for systray. How different are these, and are there any "getting started" guides on ...
6
votes
2answers
857 views

Create a Gtk Window insensitive to Show Desktop and Won't show in Launcher

I want to make a Gtk.Window which is pinned to the Desktop and acts like a desktop widget. I've found that I can do this by setting self.set_type_hint(Gdk.WindowTypeHint.DESKTOP) which keeps it below ...
6
votes
1answer
1k views

What is the correct way to use g_signal_connect() in C++ for dynamic unity quicklists?

I want to make my application use dynamic unity quicklists. For building my application I am using C++ and the QtCreator IDE. When a menu action is triggered I want to be able to have access to a ...
6
votes
2answers
726 views

Are there any standard UI / UX / design principles or guidelines for building Ubuntu apps?

Are there any standard UI / UX / design principles or guidelines for building Ubuntu apps? I'm creating my first app and am afraid it will be too "webappish".
6
votes
1answer
825 views

PyGTK Application Icon Blurred in Unity

I have 128x128 icon referenced in main window glade file like <property name="icon">../media/my-icon.svg</property>. I tried, with both svg and png, but it is always very blurred in ...
4
votes
1answer
154 views

What does desktop_Icon mean?

I've submitted an app to the software store but it gets sent back with this error:- desktop_Icon What does this mean and how do I fix it?
4
votes
1answer
442 views

Does Ubuntu Phone APIs include Qt Mobility?

I'm currently developping an application for Meego/Harmattan. This app uses Qt Mobility API, and can easily be ported to SailfishOS. I would like to know if this API is also supported in Ubuntu Phone ...
4
votes
2answers
6k views

C# on ubuntu 12.04

Is C# a good choice for ubuntu programming? E.g unity, or applications that will run on ubuntu? Am I doing good wanting to learn C# when I'm determined to stick with ubuntu and develop on it or for ...
4
votes
1answer
160 views

How to add dependencies to a Quickly generated .deb installer? [duplicate]

Possible Duplicate: Create a quickly app with build dependencies I need extra packages for my app (done with Quickly). When I run: quickly package How can I set them? Thanks in advance!
4
votes
1answer
788 views

Working with quickly, are there any gtk.Builder code sketching tools that integrate?

Example: quickly create ubuntu-application testing quickly design #makes changes #insert some other command here that would be roughly equivalent to 'quickly sketch' quickly edit #to populate the ...
4
votes
1answer
838 views

How to create appmenu in using python3 and PyQt?

I am looking for a way to create appmenu indicator using python3.2 and pyqt4. Please help me.
3
votes
0answers
314 views

How to create an Ubuntu Touch app with a C++ backend and a QML interface [closed]

I'm looking forward to the release of Ubuntu Touch and thought it would be nice to contribute a small and free app that I'm also using now on my Android phone. The free and open source app for ...
3
votes
2answers
85 views

How to go back from a PageStack's Page to the parent tab in the UI Toolkit

So in a previous question I tried to use the Ubuntu UI Toolkit to nest a PageStack within the Tabs component. It seemed to work, but it had its quirks, so I'm now trying another option, which in ...
3
votes
0answers
136 views

FreshBooks Online Account

I'm developing an application that connects to FreshBook's API. I can either integrate the account authentication process within my application, or I can develop an Online Account that could be used ...
3
votes
5answers
594 views

Problem with Ubuntu Phone SDK demo app

I have installed the Ubuntu phone SDK on a VirtualBox VM running Ubuntu Precise (12.04.2 LTS) as the guest OS. The "guest extensions" have been installed. The guest OS kernel is 32 bit 3.2.0-37 ...
3
votes
2answers
2k views

What exactly are items in the /dev directory?

I have been writing an application in C++ that transmits radio messages by writing to a modem connected to the serial port. To do this I need to get a file descriptor using code of the form ...
3
votes
1answer
116 views

Can something be installed in /usr by my app showdown project?

I am working on a project for Ubuntu App Showdown Contest (https://launchpad.net/wuuzy) and I wanted to know if it is possible to install things like libraries in /usr. My project, in fact, use an ...
3
votes
2answers
533 views

How can I get the source code to gnome-system-monitor and use it in my application?

I want to create a system monitor quite similar to gnome-system-monitor in ubuntu using python. I have used quickly application for the GUI and now i want to show the cpu history as shown by the ...
3
votes
2answers
184 views

What resources should I use to learn to develop apps for Ubuntu? [duplicate]

I just made up my mind that I want to learn how to develop apps for Ubuntu Linux, using Quickly, and its tools (PyGTK+, Glade, etc.) Is there any tutorials or resources that you can recommend to me, ...
3
votes
4answers
2k views

What icon does Unity use for an application?

I have a .deb package that installs application icons under the following locations: /usr/share/icons/hicolor/16x16/apps/ /usr/share/icons/hicolor/48x48/apps/ /usr/share/icons/hicolor/32x32/apps/ ...
2
votes
1answer
74 views

Ubuntu SDK. error: “Kit autocreation for error is not supported”

I am using ubuntu sdk, and I am trying to create Kit for my device. I'm opening the tab "Devices" and clicking "Autocreate", and I'm getting an error: "Kit autocreation for error is not supported". Do ...
2
votes
1answer
56 views

What does desktop_Exec mean?

In a review for my click package, the message contained this bit: desktop_Exec What do I bear in mind to fix it?
2
votes
1answer
37 views

What does desktop_validates mean?

In a review for my click package, I saw a message containing: desktop_validates What does it mean and how do I fix it?
2
votes
1answer
267 views

Get source code for copy/paste [closed]

Every operation performed by operating system have a source code. So for coping operation there should be source code. So I need a file's name having source code for copy operation.So I can add some ...
2
votes
2answers
353 views

How To Use i18n.tr in Ubuntu Touch Projects

I have been using i18n.tr for a while in my Ubuntu-Touch projects. I know what this function is about but I don't know how to add a translation to my project. Where do I have to place my translation ...
2
votes
1answer
244 views

How to set quickly to use python3 when creating new applications in Ubuntu 12.04

I'm just starting to learn python and use the standard set of tools in ubuntu 12.04 (quickly, glade, gedit). When I do quickly create ubuntu-application foo the application uses python 2.7 by ...
1
vote
2answers
161 views

How to change window opacity dynamically in Python and Quickly?

The app is written in HTML and is running using webkit and Quickly. The opacity can be changed using Glade. I want to add a slider functionality in HTML which will change the title of the HTML ...
1
vote
2answers
143 views

How would I make a simple indicator program to record timestamps?

I would like to make a button to sit up next to my sound/wireless/etc indicators which, when toggled, will change color and write the system time with the word "begin" to a file, then, when toggled ...
1
vote
1answer
276 views

Upload quickly project to Launchpad with “quickly share” not working!

I want to upload my quickly project for the Ubuntu App Showdown. I signed the Ubuntu Code of Conduct successfully and created a project "interest-calculation" on my Launchpad-Portal. When I enter in ...
1
vote
1answer
297 views

Display and edit text and images in a quickly app

I need to be able to display images and text (images resizable and text editable). I was thinking maybe a HTML type thing could do this. For a really bad example like how a word processor works. ...
1
vote
3answers
1k views

VB alternative/equivalent for development of Windows apps in Ubuntu

I want to develop a simple form for an Invoice for the user to use on Windows. I learnt how to do it using Visual basic in Windows. It's the simplest way to make a GUI for Windows I suppose. I am ...
0
votes
1answer
1k views

Where can a beginner learn ubuntu game development?

Hi everyone I haven't had Ubuntu for long but I feel it has more potential for game development than Windows 8(DON'T USE IT, IT BLOWS!). On Windows I used XNA, but I wanted to have a development ...
0
votes
1answer
100 views

How do you get http:// to load automatically in a web browser?

i have created a web browser in glade / python and what i'm wanting to do is get HTTP:// to load automatically. Just because at the moment whenever i go to a website i have to type the HTTP:// and if ...
9
votes
1answer
115 views

How updates are handled for commercial applications?

I'm planning on publishing a commercial (paid) application to Software Center and I've seen that during the process of submiting the app I have to upload a .deb package. I'd like to know if there is ...
8
votes
1answer
260 views

Why the Ubuntu App Developer website is not showing content about development for desktop?

Looks like they removed every content that is not related with development for desktop. For example when you click in "Get Started" tab there is only information about the Ubuntu Touch and its SDK, ...
7
votes
1answer
2k views

What are Smart Scopes?

I've heard Ubuntu 13.10 will ship Smart Scopes technology. What are smart scopes?
7
votes
1answer
719 views

How long does it take to complete the review stages in Ubuntu?

When we submit an application to the Ubuntu Software Center, how long does it take to complete the review stages? Namely, Pending Review In Review How long (average or based on your experience) ...
6
votes
2answers
497 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 ...
5
votes
1answer
162 views

What does .gu stand for?

What does .gu stand for? For example: ConditionalLayout { name: "row" when: layouts.width > units.gu(50) //right here Row { anchors.fill: parent etc....
5
votes
1answer
386 views

Can I write Ubuntu phone applications in C/C++?

As a console game programmer, I have lots of code already written in C++ that I'd like to port to the Ubuntu phone. I see the the QT-based environment lets you "extend" QT with C++, but I really just ...
5
votes
1answer
4k views

Can I run the Ubuntu SDK in Windows?

From where can I download Ubuntu SDK for mobile application development? I can not find any links.
5
votes
2answers
162 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"
4
votes
2answers
127 views

How to hide the header of the Tabs component

I'm writing an app using the Ubuntu SDK, and I've got a PageStack component inside aTabs component. When I load one of the pages inside the PageStack, it all works well, and in the header the name of ...
4
votes
1answer
351 views

Ubuntu SDK QML how to change the background color of TextField

I have a situation where the background color of my QML app MainView causes the textfield entry to have grey lettering on equally dark brown background. This makes it almost impossible to read what ...
4
votes
1answer
522 views

Is any personal or sensitive data collected as part of the Smart Scopes Server?

The Smart Scopes technology implies submitting search queries online for them to be processed by the Smart Scopes Server from Canonical. Is any personal or sensitive data collected as part of the ...
4
votes
1answer
154 views

Why can't I get all reviews for this app in the Ubuntu Software Center using the JSON API?

I have a question after reading this: Is there any web API for Software Center available? I am trying to understand the Ubuntu Software Center's JSON endpoints. This JSON lists all the apps ...
4
votes
1answer
494 views

Quickly, Treeview and Treestore, entry text not showing

If I append entries to treestore, I can see that the entries are there, but I cannot see any of the text for those entries. I do not know if I have to add a repaint or something, or if I should link ...
4
votes
1answer
123 views

How do I post to Gwibber from python?

How do I post to Gwibber from python? I have tried import gwibber.utils foo = gwibber.utils.GwibberPublic() foo.post("This is a test message") from https://wiki.ubuntu.com/Quickly/Snippets. But ...
4
votes
2answers
239 views

How to host my commercial application in Ubuntu Software center?

I’ve checked the Ubuntu Software center for hosting my commercial (closed source) app. It appears that the store does not have any DRM support, to protect against copying the bought application to ...