Is it possible to use QuickWin graphics routines along with other fortran routines to create a DLL?
I am not able to create a DLL with QuickWin graphics. The same code is able to create an executable with no errors.
No, you cannot use QuickWin routines from a DLL. QuickWin assumes that it can "see" the main program, which it can't from a DLL.
You might be interested in my XFTGDI module that (is supposed to) works from a DLL. Currently it works only with "pure" graphics (no other user-interaction routines).