Where is Bitcoin Core's icon located?

[BlackHatCoiner]

Did you then update all the references to those filenames in the code and makefiles?

Yes, I did. I replaced "bitcoin" with my altcoin name on every file and its filename from the source files. There's no "bitcoin" anywhere on my files. I have no idea where it finds that bitcoin.ico, it isn't even named like that anymore.

Personally, I would try with a "clean" copy of the Bitcoin Core source code... and just try compiling Bitcoin Core itself with just modified icons to see if you can determine which icon files are the ones you need to modify.

Once you have that sorted, you should be able to do the same to your altcoin (and find/modify the necessary references in the various resource and make files etc)

I'll try this now, but even if I detect what's the correct image file, I'll know that it won't work if I just change it from the altcoin files. And that's simple:  I have tried every-single-image that could be that icon.

Fun fact: The installer gets the correct icon, it's the qt that has the issue.

[HCP]

So, I had a play with it... managed to get the bitcoin-qt.exe in Windows Explorer showing the modified icon:



However, within the app it is still showing the original



To get the custom icon showing... I actually had to manually delete all the *.o (object files) in the "bitcoin/src/qt/" and "bitcoin/src/qt/res" directories and then use make

It seems that just changing the .ico file etc was not enough to trigger a proper recompilation. So, I'm guessing, if you have already made the project, then tried to change the icons, that it will indeed be using the "old" resources.


And finally... I managed to get the "in app" icon changed:



This is defined by the bitcoin/src/qt/res/icons/bitcoin.png file

Again, I had to:

Code:

rm *.o

in both of the following directories:

Code:

bitcoin/src/qt/res
bitcoin/src/qt

Then from "bitcoin/src" run make as normal...

[BlackHatCoiner]

To get the custom icon showing... I actually had to manually delete all the *.o (object files) in the "bitcoin/src/qt/" and "bitcoin/src/qt/res" directories and then use make

I guess that by "bitcoin/src/qt/res" directories you mean the object files from those. Not to delete the entire directories.

Alright, these are my executions, I'll now make it.

Finish:

[HCP]

Ok... not that I think it is the problem... but what are the file owner/group and permissions for your bitcoin/src/qt/res/icons/bitcoin.png file?

After creating and copying to that directory... mine were set incorrect and I had to change to 644 and change from root:root to the user account like the rest of the files in the "icons" directory.

Also, can you post a copy of your bitcoin.png file to a file hosting service... I'll try and use your file, it might be that the PNG is in the wrong format? (unlikely I would think)

[BlackHatCoiner]

It's quite strange but it worked once I re-built it from the beginning. I am right now having Core opened with my custom icon. I guess that it had saved the image(s) in memory, and every time I compiled, nothing changed.

Anyway, thank you for your help!

[HCP]

Yeah... sounds like it was most likely just a cached file somewhere in amongst it all. I've had similar issues with other applications before where recompiling doesn't seem to be picking up the latest changes and then magically it starts working at some point and I can't figure out why!

Anyway, glad you got it fixed.