Questions tagged [application-development]

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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Quickly Switch Documentation

Does anyone know where I can find documentation on the Switch Widget on glade?? I tried finding on the GTK website, but it doesn't have an entry for it. EDIT Thank you to Timo for pointing me in ...
Rudi Strydom's user avatar
1 vote
1 answer
273 views

How can I add a back button to my web browser using Web Kit and Quickly and how add a google search bar?

I tried a bunch of different codes but am still not able to add a back button or add a google search bar.
Raffi Hotter's user avatar
1 vote
3 answers
776 views

Which database to use for quickly and pygtk

I'm writing application using quickly Pygtk and glade. this application should have database connection (such as MySQL) for reading and writing data from the local or outsourcing machine \ server. ...
usher's user avatar
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1 answer
690 views

Embed web app into a desktop application

Is there a way to embed a website/web app inside a application package? (Something similar to phonegap but for linux distros)
Adonis K. Kakoulidis's user avatar
1 vote
1 answer
68 views

How do I add a Gwibber entry widget to my app?

I am writing an app which has a button that, when clicked, should launch a Gwibber entry widget. This used to work, as suggested on the tutorial: from gi.repository import GwibberGtk entry = ...
Agmenor's user avatar
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1 answer
239 views

Where do you set keywords for applications in order to get them to show up in software center and dash searches?

Exactly as the title states, what fields do you modify in order to return an app for specific search terms in dash and software-center? Is it keywords in the applications .desktop file? Something ...
RobotHumans's user avatar
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2 answers
1k views

Error accessing Gio.Gsettings on application made in quickly

I am trying to develop an application using the quickly/pygtk stack. I got my Gsettings schemas all set up in ~/app-name-here/data/glib-2.0/schemas/net.launchpad.app-name-here.gschema.xml correctly ...
Zane Swafford's user avatar
1 vote
2 answers
261 views

What is the easiest way to exhaustively test the proxy support of my application?

I'm posting this on AskUbuntu because "easiest" in my case includes giving preference to solutions depending only on software available in the default Ubuntu repositories. (to be more accurate, 12.04) ...
Marcelo Hashimoto's user avatar
1 vote
1 answer
375 views

How to develop broadband router with Ubuntu?

I wanted to develop a router from scratch in Ubuntu which will manage following things. User bandwidth Management. User Browsing History and Bandwidth tracking. Assign HotSpot, PPPoe type of the ...
user81815's user avatar
  • 111
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1 answer
198 views

window creation issue Python Gtk via Quickly

I'm currently learning python and GTK so please forgive the noobish question, I have a program (created in quickly) that has two main windows, that is to say that depending on context one or the ...
SomKit's user avatar
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1 answer
69 views

Is it possible to store configuration values in a webapp?

I'm currently playing around with the Ubuntu webapps preview. For some cases it may be useful to store some configuration settings. Does anyone know if this is possible?
Michael W's user avatar
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1 answer
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My Ubuntu-App-Showdown-Participation-Details.txt was updated by someone and contains an other name and the false ppa

For the Ubuntu App Showdown I created a Ubuntu-App-Showdown-Participation-Details.txt-File and uploaded it correctly on "My Apps" to participate the Ubuntu App Showdown - Contest. Now I saw, that my ....
Marian Lux's user avatar
  • 2,536
1 vote
1 answer
82 views

Can I make changes or fix bugs in my app after the App Showdown is over?

Is it allowed to make changes, like bug fixes after the deadline 09.07.2012 of the apps which are hosted on Launchpad for the Ubuntu App Showdown? I did not updated anything with quickly release or ...
Marian Lux's user avatar
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1 vote
1 answer
65 views

Set dependencies in Quickly [duplicate]

Possible Duplicate: Create a quickly app with build dependencies As my app for the Developer Showdown, Virtuam, is a GUI assistant for QEMU, I need to indicate to Quickly that QEMU should be ...
Xerz's user avatar
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1 vote
3 answers
107 views

When exactly will the App Showdown stop accepting submissions?

It is not quite obvious if there is official time until which app submission still be accepted :) According to rules: You’ve got 3 weeks to develop a new app, until the 9th July 2012 Countdown ...
wik's user avatar
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2 answers
225 views

Is it a good idea to place app configuration files into "~/Ubuntu One" folder?

In order to keep certain settings in sync, is it a good idea to place app configuration files into ~/Ubuntu One folder, e.g. ~/Ubuntu One/.myapp/myapp.conf?
wik's user avatar
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1 answer
78 views

Howto watch Ubuntu One files (Cloud)?

Is there a library to add Ubuntu One files (cloud) monitoring facility into my app, e.g. to watch certain folder for the changes?
wik's user avatar
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1 answer
532 views

How to use "quickly run" and pass command-line arguments?

I'm trying to implement command-line arguments in https://launchpad.net/wakeonplan to use them in static quicklist but I can't test them because quickly run doesn't pass arguments to the script and ...
int_ua's user avatar
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1 vote
1 answer
379 views

What's the naming convention for ngettext short name?

gettext.gettext is imported as _: from gettext import gettext as _ It's some naming convention, right? What's the equivalent for gettext.ngettext? __?
int_ua's user avatar
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1 answer
44 views

quickly ignores subfolder

I have a problem with packaging quickly. I have a project foo: foo/ foo/bar/ foo_lib/ data/ When I run quickly package --extras && file-roller ../*deb I always miss /opt/extras....
Alex's user avatar
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1 answer
313 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 ...
Marian Lux's user avatar
  • 2,536
1 vote
1 answer
176 views

How do I write and submit applications for Ubuntu?

I've been a Linux user for a while, and C++ programmer for a while longer. Is there a way to write applications for Ubuntu, and how to submit them?
Mitch's user avatar
  • 108k
1 vote
1 answer
123 views

Set up apt-get remove commands in deb file (dh_make)

So, I'm trying to package my Python app, Virtuam. My question is simple: how can I set the commands which run when I remove the program using apt-get?
Xerz's user avatar
  • 4,591
1 vote
2 answers
718 views

Application won't run when installed in "/opt"

I've developed a program for the App Developer Showdown, with quickly, in python, and it works as expected when I package and install it normally -in /usr. However when packaged for installation in /...
Sam Hewitt's user avatar
1 vote
1 answer
142 views

Can't upload project to PPA using Quickly

I can't get Quickly to upload my project into my PPA. I've set up my PGP key and used it so sign the code of conduct, and the PPA exists. I don't know what other usefull information I can supply. ...
RobinJ's user avatar
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1 vote
1 answer
105 views

What are the different application directories in a quickly ubuntu-application template for?

When you create a new ubuntu-application with quickly you will notice that it creates a directory structure like this: MyApp/ setup.py bin/ help/ tests/ setup.py MyApp/ MyApp_lib/ What are each one ...
Hernantz's user avatar
  • 828
1 vote
1 answer
177 views

How can I store variable changed by user?

I'm working on simple application for Ubuntu App Showdown. I'm relatively new to programming (started learning Python last week), so maybe this question sounds stupid. Anyway, lets say there's a ...
mivoligo's user avatar
  • 830
1 vote
1 answer
332 views

Open Dialog, created with quickly does not work

I tried to open a dialog like David Planella describs here (and quickly help add): Open Custom Dialog Windows (PyGTK + Quickly) But this don't works for me. I always get the same Error-Message if I ...
Marian Lux's user avatar
  • 2,536
1 vote
1 answer
57 views

Where do I fill the App Showdown Participation Details?

I never submitted an app to the Ubuntu Software Center. Where do I fill this info? In the PPA? In a form in the USC?... Thanks in advance!
Costales's user avatar
  • 2,268
1 vote
2 answers
333 views

Will Quickly + pyside work properly like any quickly application?

I was thinking of using Quickly but I don't like Glade and I want to use pyside. I want to start my starch. Should I delete all the files and create a pyside python file? Will Quickly still work with ...
user49557's user avatar
  • 498
1 vote
1 answer
76 views

Is the "User Accounts" icon listed in the Freedesktop Icon Naming Specification?

In the System Settings, there's an entry at the bottom called "User Accounts", and it has this icon: I've looked through the Freedesktop Icon Naming Specification, but I can't seem to find anything ...
user avatar
1 vote
1 answer
122 views

How can I search a Drupal site with the new Unity lens?

I'm creating a simple Unity lense for my college site which is based on Drupal, but I don't know how to adapt this command for Drupal API. Please help, it's python. We now create our query url, ...
Ognjen's user avatar
  • 21
1 vote
1 answer
202 views

Developer tools --> Pascal

Desde ya, gracias por dejarme participar. La pregunta es si pueden poner la opcion en Herramientas para Desarrolladores, la de Pascal. Hay muchos colegas que lo usamos. Seria bueno dejarnos compartir ...
Morichetti German A. A.'s user avatar
1 vote
1 answer
13k views

Why is /dev/rfcomm0 giving PySerial problems?

I am connecting my Ubuntu box to a wireless readout setup over Bluetooth. I wrote a Python script to send the serial information through /dev/rfcomm0. The script connects fine and works for a few ...
Travis G.'s user avatar
  • 1,877
1 vote
1 answer
219 views

Suppose I want to create my own interface in Ubuntu?

Basically, I want to try making my own menu/launcher system. For the menu I'd like it to flow like the old drop-down menus (places, applications, administration, preferences etc...) except with a hub ...
jwdinkc's user avatar
  • 181
1 vote
1 answer
138 views

How do I query Ubuntu One account information?

For what I promise are un-nefarious reasons, I'd like to programmatically fetch the Ubuntu One account details for the current user of an application (eg name, email, free space). Is there way to ...
Jjed's user avatar
  • 13.9k
1 vote
1 answer
691 views

How to decorate a GTK window like eg. the gnome-panel?

I would like to make a panel-like application, in appearance much like the gnome-panel. I would like to use GTK for this (although i've also looked into Qt), preferably using Python. How can i ...
neydroydrec's user avatar
  • 4,620
1 vote
1 answer
413 views

Gtk SpinButtion in a Toolbar

How do I place a SpinButton widget on a Toolbar using GTK, or GTKmm?
Rafał Cieślak's user avatar
1 vote
1 answer
373 views

How to fix the error qmlscene: could not find a Qt installation of '' in Ubuntu Unity 22.10?

I compiled this app made for Ubuntu Touch in Ubuntu Unity 22.10. The app can be run with qmlscene %U /path/to/qml/Main.qml. When I run qmlscene, I get the error qmlscene: could not find a Qt ...
Archisman Panigrahi's user avatar
1 vote
2 answers
46 views

Opening a piece of software from anywhere [duplicate]

I have a compiled program in a certain folder that I would like to access from anywhere without needing the write ./path/to/file/each/time/app_name. For example, the app executable is installed in ...
pdaranda661's user avatar
1 vote
1 answer
52 views

What all things happen when I uninstall an application in Ubuntu? [closed]

I'm working on a desktop application and recently when I uninstalled it to install a newer version the local folder of the application got deleted. I'm curious to know what are all the things that ...
Ananthu K Kumar's user avatar
1 vote
1 answer
146 views

Can't open "Settings" apps on ubuntu 21.04

I upgraded to Ubuntu 21.04 from Ubuntu 20.04. It ran smoothly with no problems, and now I couldn't open the "Settings." How can I overcome this problem?
user avatar
1 vote
1 answer
3k views

How to fix gunicorn.service: Failed to load environment files: Is a directory

When i run sudo journalctl -u gunicorn I get: Oct 14 12:49:22 my-server-thing systemd[1]: gunicorn.service: Failed to load environment files: Is a directory Oct 14 12:49:22 my-server-thing systemd[1]:...
user11339690's user avatar
1 vote
1 answer
411 views

How can I remove and purge EasyScreenCast from Ubuntu 20.04?

I typed sudo apt remove easyscreencast and I got the result: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package ...
luisito_36's user avatar
1 vote
1 answer
841 views

Is there a way to use setTimeout in Gnome Shell Extension code?

I am trying to code a gnome-shell extension. It uses Javascript. But one major problem when I want to use setTimeout() it tells me this in the log: ReferenceError: setTimeout is not defined, what I am ...
fsevenm's user avatar
  • 743
1 vote
1 answer
63 views

Are all Ubuntu apps the same on every device

Bit of a newbie question Are all Ubuntu apps the same regardless of the device for instance if I made an app for Ubuntu on a jetson tx2 developer kit would the code be same as a Ubuntu app ran on a ...
Asjawweege's user avatar
1 vote
1 answer
191 views

How do I use the IDE to make and install a snap package?

I have built, and installed Twinkle, a VOIP program. I have built and installed it on my Ubuntu tablet,from a click but package, but that did not install properly. I now want to try it with a snap ...
Barry Drake's user avatar
1 vote
1 answer
2k views

How to run Symfony on Ubuntu 16.04 with php7

I have installed php7 on Ubuntu 16.04 and I have installed Symfony also, but when I try to run server from my command line it shows this error: PHP Fatal error: Uncaught Symfony\Component\Debug\...
Kanat's user avatar
  • 399
1 vote
1 answer
534 views

Is QtAudioEngine available for Ubuntu 16.04?

I'm trying to add sound to a Qt application on Ubuntu 16.04 with the Ubuntu SDK. The following QML builds but fails at run-time with module "QtAudioEngine" is not installed: import QtQuick 2.2 ...
James Rhew's user avatar
1 vote
1 answer
40 views

Unknown policy-vendor error in snap package review

I am trying to package an application in snap format, but When I do snap-review olam_0.1_amd64.snap It shows this error - security-snap-v2:policy-vendor unknown policy-vendor 'ubuntu-core' How ...
Tachyons's user avatar
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