QT Built-in Calculator example Button Click does not work

[fatih1]

Hello,
I downloaded the calculator example from Qt: https://doc.qt.io/qt-5/qtwidgets-widgets-calculator-example.html

And I tried to compile the program. I could see a calculator but somehow nothing happened when I clicked at the buttons.

I have changed nothing in the code
and I am using a Macbook Pro with MacOS 10.15.4 Catalina

Here you can see how it behaves:
https://www.dropbox.com/s/ctr1w2b36mfon3a/WhatsApp Video 2020-05-15 at 20.51.06.mp4?dl=0

Thank you for your help

[fatih1]

I finally solved it. Apparently it really is a problem just for Mac user
I need to use display->repaint() after the display->setText() functions.

Thank you for your help

[aha_1980]

Hi @fatih1,

all examples are available in QtCreator in the welcome page, section examples.

What happens if you run it from there?

Regards

[fatih1]

@aha_1980 said in QT Built-in Calculator example Button Click does not work:

all examples are available in QtCreator in the welcome page, section examples.

Hello aha_1980,
I ran the exact same code from the examples section in the welcome page. It somehow does not work with the buttons.

[aha_1980]

Hi @fatih1,

I don't have a Mac, but that example is running perfectly fine on my Ubuntu Linux when I compile it against Qt 5.14.1.

Which Qt version are you using?

Regards

[fatih1]

Hello @aha_1980 , thanks for your reply.

yes, it works fine other systems (on windows and ubuntu atleast)
I don't know why it does not work on my macos . Rest everything works fine. I could compile other programs.

[SGaist]

Hi,

I can't reproduce your issue on macOS 10.13.

Did you clone the code ?

[fatih1]

Hello @SGaist
Yes i did clone it

[fatih1]

I finally solved it. Apparently it really is a problem just for Mac user
I need to use display->repaint() after the display->setText() functions.

Thank you for your help

[SGaist]

It's likely something Catalina specific