The Desktop kit on Qt Creator is grayed out

[tomy]

Here:

[jsulm]

@tomy Please show your Desktop kit, there is probably a problem with it.

[tomy]

Here did you mean?

[J.Hilk]

@tomy
yes this page,

most glaring error from this screen shot is the missing Qt version: none can you select the desktop qt version there ? if not not did you install the Qt libaries for your desktop system ?

[tomy]

@J.Hilk

I clicked it and there were only the prior Android kits in the drop-down menu of it.

did you install the Qt libaries for your desktop system

I down't know what they are! :(
I just uninstalled my begone Qt and installed this new one on my Windows 7 X64 machine. Of course, afterwards I installed Android Studio and downloaded a huge size of SDK.
Now what should I do please?

[jsulm]

@tomy Start Qt Maintenance Tool and install Qt MinGW

[KazuoAsano]

I probably think that the answer of @jsulm can solve it.

In additional information, I think that you have installed only Qt version of Android.
Please additionally install MinGW 5.3.0 32 bit for Desktop.

<Update method>

• Qt Maintenance Tool(online update) select "Add or remove components"
• Please select as below.
  Qt 5.11.2
  `-
  MinGW 5.3.0 32 bit

If this solutions does't succeed, you give our about a screenshot at Qt Versions tag of Kits, We probably can give a more appropriate solution.

[tomy]

Thank you both very much.
When I go for Maintenance Tool, simply skip the Qt Account window, then Add/Remove component -> Next. Then it says: At least one valid and enabled repository required for this action to succeed.
What to do with that? I'm not used to it.
How to be rid of that, please?

[jsulm]

@tomy You need to use another repository. Take a look at this tool: https://github.com/JKSH/QtSdkRepoChooser

[tomy]

@jsulm
I don't use an online SDK I think. :(
I also clicked on the link given in Alternative Instructions but it says "page not found".
The process seems very complicated. I don't know why such an obstacle should be on the way of using Maintenance Tool!
Previously I was used to creating a temporary folder name and it'd go fine. Now it doesn't work seemingly!
By the way, I'm sure when installing Qt I checked the tick for MinGw because I knew this. Still can't figure out all the above problems! :(

[jsulm]

@tomy Can you show "Qt Versions" tab?
"The process seems very complicated" - usually there is nothing complicated if you used online installer. Some repositories can cause problems (offline/bad connection) .

[J.Hilk]

@tomy
you can check your installation folder

besides your android installation should be a folder for mingw, if it isn't than you did not install it. If there is such a folder then QTC did not pick it up automatically and you may have to manual manage your kits

[tomy]

@jsulm
There are only Android versions.

Yes, I used the offline file. A bad choice probably! :(
Should uninstall this one a use the online installer this time?

[tomy]

@J.Hilk
No folder except for Android ones. I'm almost completely sure I checked the tick for MinGW. I even took a screen shot before installing - I don't know why but likely for this situation!

[jsulm]

@tomy From this screen shot I don't see whether you checked Qt for MinGW.
I would uninstall and use online installer, so next time you can use Qt Maintenance Tool to update or add/remove Qt versions.

[tomy]

@jsulm
OK I go for uninstalling and reinstalling using the online method.
But, doesn't the check for MinGW 5.3.0 in the very bottom, mean the Desktop kit you meant?

[mrjj]

@tomy
Hi
The one in bottom is the actual compiler.

The one KazuoAsano shows in his shot is
a precompiled Qt version/binary for that compiler.

Just select the mingw Qt version higher up and it will select the right compiler to
install also.

[tomy]

@mrjj
Hi and thank you.
I uninstalled the prior version and selected the following items on the wizard for the new Qt using the online installer.
Please if possible check whether or not correct boxes have been checked. :)

[mrjj]

@tomy
Hi did you manually select the mingGW 5.3 ( below)?
I wonder as the Qt bin mingw you checked higher up
is for mingw 7.3

also, you do have visual studio installed already, correct ?

[tomy]

@mrjj

Hi did you manually select the mingGW 5.3 ( below)?

Hi,
Yes.

I wonder as the Qt bin mingw you checked higher up
is for mingw 7.3

I dont' know them well; I just tried to select the latest kits for Windows and android platforms

also, you do have visual studio installed already, correct ?

Yes.

Now shall I start please?