This is part of Family API which allow to create dual-os version of program runs under OS/2 and DOS

Note: This is legacy API call. It is recommended to use 32-bit equivalent

VioGetMode

This call returns the mode of the display.

Syntax

VioGetMode (ModeData, VioHandle)

Parameters

ModeData (PVIOMODEINFO) - input/output : Far address of a structure where mode characteristics are returned.

VioHandle (HVIO) - input : Reserved word of 0s.

Return Code

rc (USHORT) - return

Return code descriptions are:

0 NO_ERROR

436 ERROR_VIO_INVALID_HANDLE

438 ERROR_VIO_INVALID_LENGTH

465 ERROR_VIO_DETACHED

494 ERROR_VIO_EXTENDED_SG

Remarks

Refer to VioSetMode for examples.

Bindings

C

typedef struct _VIOMODEINFO { USHORT cb; /* Length of the entire data structure */ UCHAR fbType; /* Bit mask of mode being set */ UCHAR color; /* Number of colors (power of 2) */ USHORT col; /* Number of text columns */ USHORT row; /* Number of text rows */ USHORT hres; /* Horizontal resolution */ USHORT vres; /* Vertical resolution */ UCHAR fmt_ID; /* Attribute format */ UCHAR attrib; /* Number of attributes */ ULONG buf_addr; ULONG buf_length; ULONG full_length; ULONG partial_length; PCH ext_data_addr; } VIOMODEINFO; typedef VIOMODEINFO far *PVIOMODEINFO; #define INCL_VIO USHORT rc = VioGetMode(ModeData, VioHandle); PVIOMODEINFO ModeData; /* Mode characteristics */ HVIO VioHandle; /* Vio handle */ USHORT rc; /* return code */

MASM

VIOMODEINFO struc viomi_cb dw ? ;Length of the entire data structure viomi_fbType db ? ;Bit mask of mode being set viomi_color db ? ;Number of colors (power of 2) viomi_col dw ? ;Number of text columns viomi_row dw ? ;Number of text rows viomi_hres dw ? ;Horizontal resolution viomi_vres dw ? ;Vertical resolution viomi_fmt_ID db ? ;Attribute format viomi_attrib db ? ;Number of attributes viomi_buf_addr dd ? ; viomi_buf_length dd ? ; viomi_full_length dd ? ; viomi_partial_length dd ? ; viomi_ext_data_addr dd ? ; VIOMODEINFO ends EXTRN VioGetMode:FAR INCL_VIO EQU 1 PUSH@ OTHER ModeData ;Mode characteristics PUSH WORD VioHandle ;Vio handle CALL VioGetMode Returns WORD
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