So I made an app, now everything works fine, except when you press the TAB key the error sound is played. That's not the problem, the problem is nothing besides that happens. You cannot navigate between buttons and/or input boxes...Do I have to implement a special VK_TAB action or what?
If you create your window as a dialog box, you get that handled automatically as I recall. I almost never code UI's in C++ so I usually am a little fuzzy in certain topics.
If you cannot move to a dialog, well, I'm not sure I can be of help. I don't recall ever reading how this part of dialog boxes works or is implemented.
Well, just like that. Design your main window as a dialog in a resource file, then simply display it using the DialogBox() function in WinMain. That's it. No registering of a window class, no message pump. Just a single call to DialogBox().
BTW, note that you still have to write the dialog procedure.