Good lib to change window style

Question

Let's say I want to create app with customized windows and widgets. If it's multiplatform it is better. I could go with Qt but you need license and that seems costly for commercial use. Also using opengl is not exactly possible.

Answer 1

Well i actually meant multiplatform code. Not binary. So I want one code that would be translatable (without many ifdefs etc.) to multiple platforms. Qt can do it for example.

Answer 2

you cant really design multiplatform in c++. since you are using the hardware, you have to directly compile on that hardware, too. same if you want to change window characteristics: you do them different depending on the OS/Kernel

Answer 3

then don't use C, use java for this kind of work. it is run on a vm, so you can have one code for all systems