QImage::Format_Grayscale16 not supported in 4.10.2 open source

[KroMignon]

@SachinBhat I think you have some bad settings in your QtCreator.
First, a Qt Kit is a combination of a Qt version + Compiler + Debugger.
So to be usable, all those elements must be present, in the awaited path to work.

Qt MaintenanceTool can only install the tools which are created by Qt, for example for Windows:

• pre-builds of Qt versions (5.12.6, 5.13.2, 5.14.0, etc.) with given compiler (MSVC, MinGW, GCC, etc.)
• MinGW toolchains
• Qt Creator
• Qt 3D Studio
• etc.

If you want to use Qt 5.13.2 for MSVC 2017, you must first install MSVC 2017 on your PC, if you want to use Qt 5.13.2 for MinGW 7.3.0, you must ensure MinGW 7.3.0 is also selected in Devlopper and Designer Tools (which is the case per default).

After Qt MaintenanceTool has finished installation, (re)start Qt Creator, which will scan the C:\Qt directory to find all available Qt Kits, which will be listed under "Kits/Auto-detected", as you can see on my previous sent screenshots.

After that, you can select this kit to build and run your project.

[SachinBhat]

I install using unified installer and select the follwing components as my application is 32 bit. I get hid api error as below

I get :-1: error: skipping incompatible ../GUI/hidapi-master/windows/debug/hidapi.dll when searching for -lhidapi

I am making sure it is 32 bit.

I got this error before and i was able to resolve when i removed 64 bit components

Sorry for bugging you continuously as I am new to this platform

Thanks
Sachin

[KroMignon]

@SachinBhat said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

I get :-1: error: skipping incompatible ../GUI/hidapi-master/windows/debug/hidapi.dll when searching for -lhidapi

First: are you sure you need all those 6 Kits for Qt 5.13.2? To you really want to target 6 different hardware types?
Second: when do you have this error? during Qt installation or during the build of your project?

[SachinBhat]

During build of my project

[SachinBhat]

for your first question, i need only for just one of them. I added them just to debug if hid api is using any other package

[KroMignon]

@SachinBhat said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

I added them just to debug if hid api is using any other package

To avoid problems and to not slow down Qt Creator launch, install only the Qt Kit you want to use, this will save space on your disk and time!
Qt Kit do never share packages, all libraries are build for a specific target + compiler combination, there no need to select all, the only things that are common are: Sources, Qt Charts, Qt Data Visualisation, Qt...

[KroMignon]

@SachinBhat said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

During build of my project

this look like a problem with you project file

[SachinBhat]

I do not get when i build with 5.3.2 version. So I believe it wont be a problem with my project file..

[KroMignon]

@SachinBhat said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

I do not get when i build with 5.3.2 version.

Interesting, which Qt Kit you are using for Qt 5.3.2:

• MSVC2013 64bit?
• MSVC2013 32bit?
• MSVC2012 32bit?
• MSVC2010 32bit?
• MinGW 4.8.2?

[SachinBhat]

@KroMignon
I am using MinGW 4.8.2
Build build-GUI-Desktop_Qt_5_3_MinGW_32bit-Debug
I also get this error along with hid api error if it helps collect2.exe:-1: error: error: ld returned 1 exit status

Thanks
Sachin

[SachinBhat]

Here are the build settings for 5.13.2

Here are the build settings for 4.8.2

Thanks
Sachin

[KroMignon]

@SachinBhat said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

I also get this error along with hid api error if it helps collect2.exe:-1: error: error: ld returned 1 exit status

I am lost, is this project working with Qt 5.3.2 or not?
It is very hard to follow your explanations.
What is working and what is not working:

• can you build with Qt 5.3.2/MinGW?
• can you run your project with Qt 5.3.2/MinGW?
• can you build with Qt 5.13.2/MinGW 32bit?
• can you run your project with Qt 5.13.2/MinGW 32bit?

[SachinBhat]

@KroMignon said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

can you build with Qt 5.3.2/MinGW? yes
can you run your project with Qt 5.3.2/MinGW? yes
can you build with Qt 5.13.2/MinGW 32bit? No
can you run your project with Qt 5.13.2/MinGW 32bit? No

I apologise if i was not being clear.

I had a working version with 5.13.2 when i installed all the packages after only removing 64 bit ones.

I uninstalled it for getting the open source. I install with the packages selected in the image i sent. It doesn't build the project

What does the hidapi.dll require exactly?

Thanks
Sachin

[KroMignon]

@SachinBhat said in QImage::Format_Grayscale16 not supported in 4.10.2 open source:

What does the hidapi.dll require exactly?

As far as I know, hidapi.dll is not part of Qt, and a quick google search gives me ==> https://github.com/libusb/hidapi

So, how did you compile hidapi?

[SachinBhat]

I will let you know how the hidapi.dll was compiled by asking my team. Are the build settings correct?

[SachinBhat]

Let me mark this thread as solved as the topic is something else. I will start a new one with better explanation of the issue