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

VioGetFont

This call returns either the font table of the size specified or the font in use.

Syntax

VioGetFont (RequestBlock, VioHandle)

Parameters

RequestBlock (PVIOFONTINFO) - input/output: Address of the font structure that returns current RAM font or specified ROM or code page font depending on the request type.

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

Return Code

rc (USHORT) - return:Return code descriptions are:

0 NO_ERROR

355 ERROR_VIO_MODE

421 ERROR_VIO_INVALID_PARMS

438 ERROR_VIO_INVALID_LENGTH

465 ERROR_VIO_DETACHED

467 ERROR_VIO_FONT

494 ERROR_VIO_EXTENDED_SG

Remarks

For reqtype = 1, return ROM font, the font size requested must be supported by the display adapter installed. The 8×8, 8×14, 9×14, 8×16, or 9×16 character font may be requested for the VGA or PS/2 Display Adapters. The 8×8, 8×14, or 9×14 font may be requested for the enhanced graphics adapter. The 8×8 font may be requested for the colour graphics adapter.

Note: Although graphics mode support is provided in VioGetFont, this support is not provided by the Base Video Handlers provided with OS/2.

For reqtype = 1, return ROM font, the far address returned is a ROM pointer only for those fonts where the font table for the full 256-character set is actually contained in ROM. Otherwise, the far address returned is a RAM pointer. Note that for 8×8 on the CGA, the font table for the full 256-character set is returned. For 9×14 or 9×16 the font table for the full 256-character set is also returned. Partial fonts are not returned. The 9×14 and 9×16 fonts are derived from variations of the 8×14 and 8×16 fonts, respectively, where the definitions of fonts for those characters that are different, are replaced.

For VioGetFont specifying reqtype = 1, return ROM font, the font returned is derived from the fonts contained in the system, EGA, VGA, and PS/2 Display Adapter BIOS data areas as applicable. There is an exception for the EGA, VGA and PS/2 Display Adapter when VioSetCp or VioSetFont has been issued. In that case, the font of the size requested is returned from the active code page or the list of user fonts already set.

Bindings

C

typedef struct _VIOFONTINFO { /* viofi */ USHORT cb; /* length of this structure */ USHORT type; /* request type */ USHORT cxCell; /* pel columns in character cell */ USHORT cyCell; /* pel rows in character cell */ PVOID pbData; /* requested font table (returned) */ USHORT cbData; /* length of caller supplied data area (in bytes) */ } VIOFONTINFO; #define INCL_VIO USHORT rc = VioGetFont(RequestBlock, VioHandle); PVIOFONTINFO RequestBlock; /* Request block */ HVIO VioHandle; /* Vio handle */ USHORT rc; /* return code */

MASM

VIOFONTINFO struc viofi_cb dw ? ;length of this structure viofi_type dw ? ;request type viofi_cxCell dw ? ;pel columns in character cell viofi_cyCell dw ? ;pel rows in character cell viofi_pbData dd ? ;requested font table (returned) viofi_cbData dw ? ;length of caller supplied data area (in bytes) VIOFONTINFO ends EXTRN VioGetFont:FAR INCL_VIO EQU 1 PUSH@ OTHER RequestBlock ;Request block PUSH WORD VioHandle ;Vio handle CALL VioGetFont Returns WORD

http://www.edm2.com/index.php/VioGetFont

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