This weekend I asked Gemini Pro to create a Python Qt app (a serial file sender- something you'd use to send g-code files to a CNC machine or laser cutter). I did most of the dev on Windows but the app will run exactly the same on all 3 main platforms. Eventually I asked Gemini to extract the UI to its own .ui file, which it did. The resulting app worked better than the previous one I had coded myself (handling some various race conditions and other challenging issues much more quickly than me).

If I wanted, I coudl ask gemini to port the app to C++. (Gemini isn't the point here- that's just speeding up what I would have done on my own).

Good on Windows. Pretty good on Mac, but never quite looks 100%. Not sure how well Qt is going to cope with macOS 26 style transparency though.

Nearly every widely-used commercial or in-house tool in the VFX and Animation sector of M&E are Qt based. The main difference compared to tradition desktop developers is the general attitude of design; the industry takes the stance of providing the same application experience across platforms, rather than trying to adhere to each platforms' UI/UX guidelines.

Examples: Autodesk Maya, 3DS Max, Mudbox Foundry Nuke, Mari, Katana SideFX Houdini Substance Painter, Designer