Question

I have a Windows program that writen in QT using C++. May I know whether those code wrote for Windows platform are convertible to Mac? Is it 100% of the code are convertible or none of it are convertible?

Answer 1

There are a couple of things that are different on the Mac

• the Installer of your application needs to be written from scratch (if you have on)
• Windows API calls need to be ported (if there are any)
• file associations (e.g. .doc means call WinWord.exe) are done differently on Mac OS
• double clicking an associated file is implemented differently (not via argv as in Windows)
• the menus are different (the default menu contains for example the About Box, whereas the About Box in Windows is usually located under the Help Menu) – note that this can be expressed in native, good QT, but usually, Windows programmers forget to implement menus cleanly)
• and so on.

So my conclusion would be: While it is possible to write clean Qt code which can be 100% ported from one OS to another, usually, programmers fail to do it 100% clean and thus there will be some porting work to be done.

As hexa recommends, go ahead, compile the stuff and try to sort the errors into categories.
Once you have these categories, make your decision on how to proceed.