CustomWidgets | PyQt Custom Widgets - PyQt Custom Widgets

Why/how do I bind vertex attributes to a shader? - examples do but never explain.

If I allow a vertex attribute in GLSL location = 0, does that still have to be allowed in code?

How to properly set Q-vertex array buffers/objects?

Where does this* weird artifact even come from?

*The blue square is a label used to display QPixmap images. The green one is the 1 GLWidget that inherits from QOpenGLWidget. As you can see, it creates a weird square on the top-left aswell.

The Green window is supposed to display a red triangle on the lower right corner.

The relevant code might only be the last section, GLWidget.h.

Also paintGL() only runs just a few times for some reason. code:

.pro:

I have made a custom widget and have struggled all afternoon due to the lack of documentation to get a custom object that extends Gtk::Entry to work. I have gotten to the point where I can add the widget in Glade. I am now getting an error:

terminate called after throwing an instance of 'Gtk::BuilderError'

Upon loading. My gdb skills are not excellent but I know that the error is being thrown from auto builder = Gtk::Builder::create_from_file("glade/window_main.glade");

This is what my custom object implementation looks like:

I am having multiple problems with the following, apparently almost-trivial, code.

main.py

Situation: In my app I have input cards (with like sliders) which are displayed/hidden by clicking a button.

Problem: When I edit the value of a slider, then hide and unhide again, the value is lost.

I tried using a UniqueKey() but it doesn't solve the problem.

A workaround which doesn't work for me is storing the value elsewhere and the passing it as an initial value to the slider. This is because there are more variables in the state than just the slider value I have to preserve.

Run on Dartpad

I have a provider object that was working last week until I did

I have a python qt5 program with a QTreeWidget. Each QTreeWidgetItem represents files. I have the logic working correctly within mouseMoveEvent so that QDrag CopyAction passes the file mime data successfully to windows when the user drags it to windows explorer or the desktop. However, I need to know what that target path is. The QDrag target() function only returns a widget if the user drags within the application. If the user drags outside the application (like the desktop), then target() returns None.

Is there anyway to know the path the user dragged to in windows?

The reason I need to know the target path is because the file will actually be generated at runtime and the generation can take as long as a minute to complete. In this mvce example I am using touch command to instantly create an empty file so the user doesn't have to wait or see a long delay. Then after the actual file is generated a minute later, I want to replace the empty file with the actual file. My application can then tell the user that the file is now available. I can not pre-generate the file because there will be many in the list and each will take minutes to generate.

Here is my mvce (minimum reproducible example):

example.py

First, you should know I'm very new to Python. I'm currently working on an app to increase my knowledge of this language.

I'm having a QListWidget which contains items based on a widget I created. This widget contains buttons like one to update or another to delete the item.

So I'm having troubles to do this action. For example, If I click on the update button, I want to open a window and load content by getting the item values.

How could I do that ?

This is my actual code

MainWindow

The example uses the file 'QtChart.ui' (this is important) the widget for Pyqtgraph is embedded in it (this is also important).

PROBLEM: The graph is displayed, but the seconds since the beginning of the epoch are displayed instead of the date-time axis.

I set the variable axis = pg.DateAxisItem(orientation='bottom') Following the example, it should be added to such a line pw = pg.PlotWidget(viewBox=vb, axisItems={'bottom': axis}), but I do not have such a line in my code.

How to set the date-time axis instead of seconds from the beginning of the epoch?

CODE:

I am using a pyqt GUI application to show some result in charts from postgres database, but it did not work

here is my code that i use

this is how i creat my table