python (12.9k questions)

javascript (9.2k questions)

reactjs (4.7k questions)

java (4.2k questions)

java (4.2k questions)

c# (3.5k questions)

c# (3.5k questions)

html (3.3k questions)

Questions - qpainter

An auto-scaled on-off background image in a QLineEdit

I have a couple of QLineEdit widgets that need to have their backgrounds appear and disappear upon certain code changes, and need those backgrounds to also rescale when widget size changes. I am getti...
test-img

S. B.

c++

qt

qpainter

Votes: 0

Answers: 1

Latest Answer

Solved my own problem. Ended up doing it entirely in stylesheets. I don't know what my philosophical opposition was to using image instead of background-image, aside from the worry that it would inter...
test-img

S. B.

When I use Qt6 and draw a pixmap on a QWidget however in some conditions the pixmap will disappear

I use Visual Studio 2022 to write a Qt demo to show a icon of an image in my Qt application. To make sure QPainter::Antialiasing enable, I write a derived class from QWidget instead of using QLabel, a...
test-img

hehe HE

c++

qt

qpainter

qpixmap

qt6

Votes: 0

Answers: 0

Can I make a PyQt5 rect fully transparent?

I am making an imitation of the built-in Win+Shift+S screenshot function on windows. I am not very familiar with QPainter. Just like the windows function, I want to darken the background, but highligh...
test-img

ohTitus

python

python-3.x

qt

pyqt5

qpainter

Votes: 0

Answers: 1

Latest Answer

In your paintEvent(self, event) method, add two lines of code before drawing the transparent rectangle which specifies the region to be captured if not self.begin.isNull() and not self.destination.isN...
test-img

MLER

Posts

Questions

Blogs

Jobs