How to create qrc file(qml) in Python Qt(PyQt)

1. create qml file 
 - main.qml 
 - test.qml

2. create resource.qrc file
resource.qml code

-----------------------------------

<RCC>

<qresource>

    <file>qml/main.qml</file>

    <file>qml/test.qml</file>

</qresource>

</RCC>
-----------------------------------

3. execute command in terminal (in workspace included qml files)
 $ pyside2-rcc -o resource.py resource.qrc

4. check resource.py file 
 : Completed when the resource.py file is created.

 

 

How to use qrc file!

1. in main.py 

ex ) qrc:///filename

QUrl("qrc:///qml/test.qml")

 

2. in main.qml file

ex ) qrc:/qml/test.qml

source: "qrc:/qml/test.qml"

#qrc #resource.qrc #resource.py #python #qt #pyqt #pyside2-rcc

Error PyQt5, pylint can't find QWidget and QApplication

Issue :

Error PyQt5, pylint can't find QWidget and QApplication

Solve:

Create ".pylintrc" with .py file in current directory

Create ".pylintrc"

And add content

extension-pkg-whitelist=PyQt5

This error seems to be said… reliability issue for PyQt...

Actually I don't know why this error occurs.

I tried to re-occur the error, but it didn't occur.

#pylint #PyQt #PyQt5 #can't find QWidget and Qapplication #pylintrc

How to link toolchain to qtcreator (download toolchain in linaro)

1. Download Toolchain 
https://www.linaro.org/downloads/

2. Click on Tools at the top of the Qtcreator -> build& run 

3. Set up the Cmake. (This is just a skip. I won't use it even if I set it up.)
Press "Add…" and set as below (based on default path when installing the toolchain)
Path : /usr/local/oecore-x86_64/sysroots/x86_64-oesdk-linux/usr/bin/cmake

4. Click Debuggers -> "Add…" and add as below
Path: /usr/local/oecore-x86_64/sysroots/x86_64-oesdk-linux/usr/bin/aarch64-gnu-linux/aarch64-gnu-linux-gdb



5. Compiler -> "Add…" and add C++(g++) / C(gcc)
c++ compiler path : /usr/local/oecore-x86_64/sysroots/x86_64-oesdk-linux/usr/bin/aarch64-gnu-linux/aarch64-gnu-linux-g++
c compiler path: /usr/local/oecore-x86_64/sysroots/x86_64-oesdk-linux/usr/bin/aarch64-gnu-linux/aarch64-gnu-linux-gcc




6. Select Qt versions -> "Add…" and select qmake in toolcain




7. Select "Kits" -> Set to the same value as below
Device type: Generic linux device
sysroot: /usr/local/oecore-x86_64/sysroots/aarch64-gnu-linux
compiler: 5.Compiler
debugger: 4.debugger
qt: 6.qmake
cmake : /usr/bin/cmake


8. Input Command in Command
$ sudo -s

modify bashrc (add command)
$ vi ~/.bashrc
.…
alias qtcreator='source /usr/local/oecore-x86_64/environment-setup-aarch64-gnu-linux;
/opt/Qt5.10.0/Tools/QtCreator/bin/qtcreator'
...

And save 
$source ~/.bashrc

9. When running Qt, you must always run qtcreator as command from the terminal to build... I don't know why.


#QT #QtCreator #Qmake #C++ #C #Linux #Embedded #Download Toolchain  #toolchain #Linaro