DosGetVersion

This call returns the OS version number.

Syntax

DosGetVersion (VersionWord)

Parameters

VersionWord (PUSHORT) - output:Address of the OS version number. The version is stored as two bytes, with the minor version in the first byte and major version in the second byte.

Return Code

rc (USHORT) - return

Return code description is:

0 NO_ERROR

Bindings

C

#define INCL_DOSMISC
USHORT rc = DosGetVersion(VersionWord);
PUSHORT VersionWord; /* Version number (returned) */
USHORT rc; /* return code */

MASM

EXTRN DosGetVersion:FAR
INCL_DOSMISC EQU 1
PUSH@ WORD VersionWord ;Version number(returned)
CALL DosGetVersion

Returns WORD

Example

The following example shows how one may obtain information for program initialization. The program locates the environment segment and prints the name of the command from the command line. It then obtains the OS version number and prints it.

#define INCL_DOS
#include <os2.h>
#define ENVVARNAME "PATH"
main()
{
SEL EnvSel; /* Environment segment selector (returned) */
USHORT CmdOffset; /* Offset into env. seg. of command line (returned) */
PSZ FAR *Commandline; /* Pointer made by EnvSel and CmdOffset */
USHORT Version; /* Version numbers (returned) */
BYTE MajorVer; /* Major version number */
BYTE MinorVer; /* Minor version number */
USHORT rc; /* return code */
/** Locate environment segment and offset of command line. **/
if(!(rc=DosGetEnv(&EnvSel, /* Env. seg. selector (returned) */
&CmdOffset))) /* Offset of command line
(returned) */
printf("Environment located; selector is %x offset is %x\n", EnvSel,
CmdOffset);
/** Use a macro to make a far pointer out of selector:offset pair.**/
/** Notice the far-string pointer specification (%Fs) used to print **/
Commandline = MAKEP(EnvSel, CmdOffset);
printf("Command entered is %Fs.\n", Commandline);
/** Obtain and print version info; use macros to extract info. **/
/** We need to divide by 10 to obtain true version numbers. **/
if(!(rc=DosGetVersion(&Version)))
{
MajorVer = HIBYTE(Version) / 10;
MinorVer = LOBYTE(Version) / 10;
printf("This is OS/2 version %d.%d\n", MajorVer, MinorVer);
}
}

Note

Example code doesn't support check is executed under DOS or not.

Note

Text based on http://www.edm2.com/index.php/DosGetVersion

Family API
DOS	Process Manager	DosBeep DosExit DosSleep DosExecPgm
File Manager	DosChDir DosChgFilePtr DosClose DosDelete DosDupHandle DosMkDir DosMove DosQCurDir DosQCurDisk DosSetFileMode DosOpen DosQFileInfo DosRead DosQFileMode DosQFSInfo DosQVerify DosRmDir DosSelectDisk DosFindClose DosFindFirst DosFindNext DosSetFileInfo DosSetVerify DosWrite DosFileLocks DosSetFHandState DosNewSize DosBufReset DosQFHandState DosSetFSinfo DosShutdown
Memory Manager	DosFreeSeg DosSubAlloc DosSubFree DosSubSet DosAllocHuge DosAllocSeg DosReallocHuge DosReallocSeg DosGetHugeShift DosCreateCSAlias
NLS	DosCaseMap DosGetCtryInfo DosGetDBCSEv DosSetCtryCode DosGetCollate DosGetMessage DosInsMessage DosPutMessage
Date and Time	DosSetDateTime DosGetDateTime
Devices	DosDevConfig DosDevIOCtl DosDevIOCtl2
Signals	DosHoldSignal DosSetSigHandler
Misc	BadDynLink DosGetEnv DosGetMachineMode DosGetVersion DosError DosErrClass DosSetVec
KBD	KbdCharIn KbdFlushBuffer KbdGetStatus KbdSetStatus KbdStringIn KbdPeek
VIO	VioGetBuf VioGetConfig VioGetCurPos VioGetCurType VioGetPhysBuf VioReadCellStr VioReadCharStr VioScrollUp VioScrollDn VioScrollLf VioScrollRt VioScrUnLock VioSetCurPos VioSetCurType VioSetMode VioGetMode VioShowBuf VioWrtCellStr VioWrtCharStr VioWrtCharStrAtt VioWrtNAttr VioWrtNCell VioWrtNChar VioWrtTTY VioScrLock VioPopUp
Tools	BIND
Modules	DOSCALLS.DLL VIOCALLS.DLL KBDCALLS.DLL MSG.DLL
Libraries	API.LIB OS2386.LIB FAPI.LIB DOSCALLS.LIB SUBCALLS.LIB