How to make a strip with colored marks in QT?

Question

Python

Hello.
Most likely the question was not clear. I'll just show you in the picture.

Prompt as it is possible to implement something similar in QT.
I want to make the bar be the time of the video, and the colored marks will show where the movement was.

Answer 1

If using QWidget, override QWidget::paintEvent(QPaintEvent *event)

Answer 2

The most convenient way to draw on QPixmap is with QPainter.
Save QPixmap and redraw on changes or resize.
You can shove a QPixmap into a QLabel and put it anywhere.
But if the changes are too frequent, then you should use the solution from TriKrista