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32-bit MSDOS (Announce)

posted by mceric, Germany, 02.07.2021, 17:15

> > C:\devel\develop>objdump -p world.exe | grep -i dll
> > DllCharacteristics 00000000
> > vma: Hint Time Forward DLL First
> > DLL Name: kernel32.dll
> > DLL Name: oleaut32.dll
> > DLL Name: user32.dll
> >
>
> user32 is generally speaking core windows api. Our base Windows headers are
> winuser/wintypes.h etc translations, and afaik mix user32 kernel32, so I
> don't know exactly how much it is used.
>
> In the system unit I only see a reference to messageboxa (for a exception
> popup in GUI applications), and charupperbufferw to uppercase a 16-bit
> character string.
>
> Oleaut32 is used for the COM compatible string type, and less important,
> fairly easy to turn off or not.
...
> > But ultimately I'd rather see just msvcrt.dll
Why would you want your compiled apps to depend on the runtime library for Microsoft Visual C? They should only depend on the operating system libraries, not on the C libraries of another brand of compiler.

I guess a hello world will not use much COM or OLE automation:

https://en.wikipedia.org/wiki/OLE_Automation

https://en.wikipedia.org/wiki/Component_Object_Model

But I think it would make more sense to talk about a list of functions called by the hello world example from the three libraries than just saying "let us just use the C library of Microsoft C here". You can then proceed to implement those functions of the 3 used Windows libraries which are useful in PDOS/386 and make stubs for the others.

---
FreeDOS / DOSEMU2 / ...

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