kandi X-RAY | qt Summary
kandi X-RAY | qt Summary
forked Qt 4.8 with wkhtmltopdf-specific patches
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I'm trying to run through some image recognition tutorials, but I keep running into this error that's preventing me from proceeding. I'm running Ubuntu 21.10, and Python 3.9.7. My code is as such....
ANSWERAnswered 2021-Nov-17 at 18:56
I got the same issue after upgrading to Ubuntu 21.10 (from 20.10).
Installing an older version of OpenCV worked for me.
I'm attempting to implement a subclass of
QQuickAsyncImageProvider in Pyside6, referring to the official example. I'm already aware of the potential hurdle that, unlike in the C++ example code, with PySide it's not possible to inherit from both
QObject. In order to send a signal from my
QRunnable I'm instead using an intermediary
QObject, as suggested here. That part works fine.
Here's my attempt so far at using this arrangement along with my own subclass of
ANSWERAnswered 2022-Feb-22 at 13:19
I reported this in case it was a bug, and one of the maintainers realized that the issue is that the
AsyncImageResponse gets immediately deleted. The workaround for this is to hold a reference to it in the
I have a
QObject derived class
Expense that I use in QML like this.
ANSWERAnswered 2022-Feb-21 at 07:35
You just need to add
QML_ELEMENT to your QObject-derived
Expense class's header and make sure you have moc enabled in your CMakeLists.txt. In application case it doesn't matter if the expense.h/cpp sources are included via
qt_add_qml_module. I think it's clearer to add them to
qt_add_qml_module SOURCES. Then you just import module URI in you QML file. In the example below I'm printing out property value from Expense object in QML.
I tried to build and run a Qt5 (5.15.2) application on macOS (10.15.7) using Bazel 5.0.0. Unfortunately, I run into some problems. The building part seems to work, but not the run part.
I installed Qt5 on my machine using Homebrew:...
ANSWERAnswered 2022-Feb-16 at 17:13
I followed your steps with Mac OSX 10.15.7, Qt (installed by homebrew) 5.15.1 and both bazel 4.2.2-homebrew and 5.0.0-homebrew and initially I could not build the project from git:
* 3fe5f6c - (4 weeks ago) Add macOS support — Vertexwahn (HEAD -> add-macos-support, origin/add-macos-support)
This is the result that I get when building:
How do you get CMake to compile conditionally with Qt4.8 or Qt5? In other words, if Qt5 is available then compile with Qt5. Otherwise if Qt4.8 is available use that.
In my CMake, I have:...
ANSWERAnswered 2022-Feb-15 at 20:06
Automatically selecting an available version of Qt is fairly easy with the
NAME option of the find_package command. The problem is that Qt4 and Qt5 have different names for the same modules.
What I want to do is to open a new
Countrypage sub-window by clicking on the "New" button which is in
For example, if I click the "New" button in a
CountryPage window (window title: "Country page"), one more new
Countrypage window will be opened in the MDI area (window title: "Country Page 1"). Now if we click the "New" button in "Country Page 1", one more new window will open in the MDI area (window title: "Country page 2") and so on - and I want to close the windows one by one by pressing the corresponding "Close" button in
Countrypage. New window are opened only by pressing a "New" button.
And if we close the last opened window by pressing the "Close" button, the text item in the "Country" text-box will be automatically updated in the previous window's "Country" text-box and so on.
Main Script :...
ANSWERAnswered 2022-Feb-14 at 18:38
The adding and closing of sub-windows is best handled by the main-window. The
CountryPage class doesn't need to know anything about the sub-windows. The new/close buttons can be directly connected to methods of the main-window. This makes it easier to manage the sub-windows via the functions of the mdi-area.
Below is a re-write of your example which should do what you asked for:
I'm trying to start android emulator on apple silicon mac and I'm always getting the same results:
- Running emulator directly through Android Studio (the latest stable version, Arctic Fox 2020.3.1 Patch 4) causes a problem, when the process qemu-system-arch64 stucks and uses 99% CPU (there is no emulator's screen or something like than). Such behavior produces some logs:
ANSWERAnswered 2022-Feb-03 at 21:53
Issue was successfully fixed in Android Emulator revision 31.2.7. Just go to Android SDK Manager and update it!
According to android emulator release notes:
I have that PyCharm is halting on all my exceptions, even the ones I am handling in a
try except block. I do not want it to break there - I am handling and perhaps expecting an error. But every other exception I do want it to halt and suspend execution (e.g. so that I have the program state and debug it).
How does one do that?
I tried going into the python exception breakpoint option but I didn't see an option like "break only on unhandled exceptions" e.g as suggested by these:
- Stop PyCharm If Error
note this is my current state, note how it stopped in my try block... :(
ANSWERAnswered 2022-Jan-25 at 23:49
I think it is already working actually, but you are in fact not catching the correct error. In your code you have:
I cannot start the android emulator V30.9.4
I got this error message:...
ANSWERAnswered 2022-Jan-16 at 14:52
- Try to use the host system's OpenGL driver:
Im trying to make a Pyqt5 app with aiohttp request, and asyncio tasks. Im using quamash package too and it requires Python 3.7 so i installed this version.(it didn't work on Python 3.10) The main reason i use asyncio and quamash is because i want to do requests and without freezing the GUI of the app.
I get this error when i click the Start button and close the app:...
ANSWERAnswered 2021-Dec-20 at 09:19
If using the
I fixed the error by installing previous release of aiohttp Orignally i had aiohttp 3.8.1.dist installed. I also knew it was working for me before on other version of aiohttp, so i looked up pypi.org/project/aiohttp/#history and turn out i had to uninstall aiohttp and install aiohttp==3.7.4.
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