Int 2F/AX=4680h

MS Windows v3.0 - INSTALLATION CHECK

AX = 4680h

Return:
AX = result
0000h MS Windows 3.0 running in real (/R) or standard (/S) mode,
or DOS 5 DOSSHELL active
nonzero  no Windows, Windows prior to 3.0, or Windows3 in enhanced
mode

Note: Windows 3.1 finally provides an installation check which works in all modes (see AX=160Ah)

See Also: AX=1600h - AX=160Ah

Category: Windows - Int 2Fh - M

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