GPermission seems to have little to no documentation. How do you actually use it? (I'm currently using it for a GTK LockButton).
I agree, the documentation is pretty lacking. GPermission is an abstract base class which isn't particularly useful by itself. You need something which actually implements GPermission, like polkit.
There are some examples in gnome-control-center, like the datetime panel.
You need to subclass GPermission. When you need to change the values, you call g_permission_impl_update. Very non-intuitive, but yeah that's how it's done.
Google found me this straight away: https://developer.gnome.org/gio/2.26/GPermission.html
Is that not sufficient?
Related
Is there any way to get a reference to a Fragment without using findFragmentById or findFragmentByTag ??
There is very little information in your question. I assume you use the FragmentManager? There is a getFragments method, you could find your fragment using that. https://developer.android.com/reference/kotlin/androidx/fragment/app/FragmentManager#getFragments()
You could also catch the fragment when it attaches, I believe there is an onAttach callback.
If these solutions are not what you are looking for, please provide more information
It seems doesn't add anything to the regular java hot-swapping. I'd like to get the groovy class hot-swapped in a case of method adding/removing/signature changing. Is it possible with this agent?
Dany's answer is correct, but doesn't answer the question fully. No, this agent doesn't help you to hot-swap when fields or methods are changed. You might want to consider using DCEVM for that.
Removes all timestamp-related Groovy fields on class loading
Also clears Groovy's call site cache
As stated in
https://github.com/JetBrains/intellij-community/blob/master/plugins/groovy/hotswap/agentSrc/org/groovy/debug/hotswap/ResetAgent.java
Can anyone please explain the difference between plexus-classworlds and (plain) classworlds?
These two are confusing and can't see the difference. Plexus classworlds contains almost no description. Apparently, a maven-based Java project uses both, I don't understand why.
Is it possible to replace classworlds with plexus-classworlds without much hassle?
I'm gonna answer that, even though the question is so old...
classworlds was migrated to plexus-classworlds, but the documentation on the site doesn't seem to keep up with that... the best docs I've seen was on classworlds 1.1-SNAPSHOT, although the current is plexus-classworlds 2.4.1-SNAPSHOT, and there is hardly any doc there.
if you look at plexus-classworlds, you can also see the original org.codehaus.classworlds package, with class comments like this:
A compatibility wrapper for org.codehaus.plexus.classworlds.launcher.Launcher provided for legacy code
which means that they thought about migration, but of course nothing replaces a thorough test.
Out of curiosity, what may the rationale behind these function names (found in Apple's Quartz Core framework) be?
ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv()
ZNK2CA6Render9Animation9next_timeEdRd()
ZN2CA11GenericRectIiE5insetEii()
Do you think the developers somehow encoded argument types in function names? How do you find yourself putting "EP19" in there in the course of day-to-day coding? In what circumstances do such barely readable function names actually help you read code and otherwise be more productive?
Thanks in advance for any hints, and Merry Christmas!
These 'mangled' names are automatically generated by the C++ compiler and indeed encode type information.
I am new to PyQt and Qt Designer and I'm trying to create an easy method for relating qWidgets with the tables and columns in an SQLite database. My idea was to tag each qWidget in designer with two custom properties, one with the table name and one with the column name. Later, I would use the info provided by designer to build my own class which creates a relationship between the qwidets and SQLite database.
Adding the custom properties in Designer seems to work fine however, the code for these custom properties do not get generated when converting the xml of designer into python (using UIC). Has anyone done this successfully? Perhaps there is a better way to do this?
Thanks,
Eric
If you added a property in Designer called "myproperty", fetch it with...
mywidget.property("myproperty")
This works fine in pyqt 4.8.3, perhaps it did not work in previous versions.
Check out this article Eric. Particularly look at the section titled "Producing a Plugin." River Bank Computing has another great PyQt reference.
EDIT:
I've been doing some more reading and I can't find a way to have this done automatically for you. If you are ok with with adding dynamic properties at run-time instead of design time you could accomplish the same end result. Here is an explanation of the setProperty() method in QObject, from which QWidget inherits.
If that doesn't work for you then it seems you might be better off going with a less generic approach. Instead of using a generic QWidget, you might be able to use a custom class derived from QSqlTableModel to keep track of your connection info. Another way would be to just use a QTableView and do the queries yourself to populate the data. Here and here are articles on databases in Qt. You might some inspiration for a new design from one of them.
I have not had great luck with using the Designer tool -- usually I end up doing a few rough layout, using pyuic and then editing and adding other stuff by hand.
It sounds like you could easily accomplish your task by creating your own custom class that inherits from QWidget and has the additional properties that you described. With my experiences trying to use custom widgets in the designer, I think the 'easier' way is to just write the class yourself and then set the layout by hand.
I know this doesn't exactly answer your question, but maybe you will try some of my suggestions.