Even though building QuickWin programs is a quick and easy way to produce Windows programs, there are some limitations and restrictions.
You can't use normal Windows interface features such as menus, dialog boxes, and graphics inside a QuickWin program. Your program won't work correctly if you add Windows routines.
QuickWin programs do not support graphics libraries as found in previous versions of QuickC.
Only one window in the program can be active at a time. That window appears in front of other windows (unless tiled) and has a highlighted title.
If a program terminates with the exit function, a dialog box appears and asks if the user wants to quit the program. If the user quits, all of the windows are erased and the program is closed. If the user doesn't quit, the windows remain active, and the user must choose the Exit command from the File menu to quit.