Visual designer (win32)
I've created a win32 project.... Can I use the form designer to design my forms? (i want my project to remain native...)
Create a new project and choose the CLR + Windows Forms Application template. If you are going to use unmanaged code in this project, you'll have to allow executing "unpure" code. Project + properties, Configuration properties, General, Common Language Runtime support = /clr. Beware that you'll have to code using the C++/CLI syntax, quite a bit different from normal C++ syntax.
You can't. You'll need Windows Forms. You are making a big mistake investing time in some kind of freeware UI just to avoid having to install the runtime support DLLs. Picking the wrong one is a decision that will haunt you for many, many years.