General and Desktop

@nicker-player said in how to read and wtrite the xls and xlsx files on the qt?are there any libs that could support these formats of files:

QAxBase::setControl: requested control Excel.Application could not be instantiated

Is Excel installed on the machine you are running this on?

Hi,

This bug report to a gist that explains what to do.

Note that this is for 5.15 further ajustements might be needed since your are on 5.9.

@jsulm okay the issue is resolved, simply delete all data on [MainWindow] in QtProject.ini and restart the application

Unfortunatly the focus policy alone is not enought. The popup windows has proven quite stubborn in hiding itself every time i do something on my virtual keyboard.

Right now what i am trying to do it add an event filter to the whole QApplication and intercept all mousepress events that are done inside my keyboard and completly block the signal. But that mean i have to manually do my own events for everything happening in the keyboard and it is slowly turning into quite the nightmare. I just can't believe this is the best solution. And i'm not even sure yet that it's even going to work.

@JoeCFD said in Troubleshooting USB Communication with Qt and libusb for Embedded Device Recognition:

@Andrew23 Try to use Qt serial port to detect USB Devices

Maybe I didn't explain my context well. What you suggested is to open a serial connection with QSerialPort, but my USB device is not a CDC-ACM class device that creates a virtual COM port. My goal is to communicate with my USB device through bulk transfer, reading/writing to its endpoints. I know that implementing a driver for this purpose is usually necessary, but I have discovered that it is possible to use the generic WinUSB driver with the libusb library. Am I wrong?

@RokeJulianLockhart AFAIK no. From the doc you linked:

The FluentWinUI3 style is not a native style and can be run on all supported platforms

From what I can see it only styles the controls to follow the Fluent guidelines to some degree. It does not use the materials I mentioned or the composition API. I wouldn't hold my breath for that to be honest. Qt and WinUI3 are very different stacks of technologies and they don't mix well, so I wouldn't expect a direct support for that.

@shreya_agrawal Please provide more information (ideally also code): Where exactly did you put the spacers?

@Asperamanca I tried to change the whole text to lowercase and that worked!

After testing it with Qt6.5.3 I found that it does not work with Qt6.8.2.
https://bugreports.qt.io/browse/QTBUG-134797

In the camera example, I just comment

So there is no preview, then the "Capture Photo" button still works as expect.
I don't think with/without viewfinder is the problem.

I'm having this same issue.

im on Windows with version 6.8.2

Thanks for letting me know! I figured out another work around so for now I should be good!

I've fixed it to work with Qt6 especially 6.8.2
https://github.com/pourjour/qsqlcipher/tree/main

Hi and welcome to devnet,

Widgets are not hardware accelerate at all. It has nothing to do with Wayland.

See also https://forum.qt.io/topic/148028/qt-application-like-daemon-how.
I see no evidence that it, or anything else, has been updated/written for Qt6.
If it works for Qt5, did you try having a look at it with a view to updating for Qt6? If you're lucky it will work or not be much to do.

Ok - why are they important? If they are that important then you also have to check for them in the first place. Use an event filter for example.