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Control Program Function Calls
This section reflects the Dos API interface of OS/2 only.
The Dos function calls can be used in full-screen and Presentation Manager sessions to perform basic operating-system operations, such as file input/output, memory allocation, and thread and process creation/control/communication.
Notes:
- Calls marked xPM are not supported by Presentation Manager, and must not be used by Presentation Manager applications. An error code is returned if any of these calls are issued.
- Calls marked xWPM are not windowable and are not supported by Presentation Manager. They can be used in OS/2 mode.
- Calls marked FAPI are present in the Family API.
FUNCTION CALL
| FUNCTION CALL | ICON |
| DosAllocHuge | FAPI |
| DosAllocHuge | FAPI |
| DosAllocSeg | FAPI |
| DosBeep | FAPI |
| DosBufReset | FAPI |
| DosCaseMap | FAPI |
| DosChDir | FAPI |
| DosChgFilePtr | FAPI |
| DosClose | FAPI |
| DosCreateCSAlias | FAPI |
| DosDelete | FAPI |
| DosDevConfig | FAPI |
| DosDevIOCtl | FAPI |
| DosDupHandle | FAPI |
| DosEnumAttribute | FAPI |
| DosErrClass | FAPI |
| DosError | FAPI |
| DosExecPgm | FAPI |
| DosExit | FAPI |
| DosFileLocks | FAPI |
| DosFindClose | FAPI |
| DosFindFirst | FAPI |
| DosFindFirst2 | FAPI |
| DosFindNext | FAPI |
| DosFreeSeg | FAPI |
| DosGetCollate | FAPI |
| DosGetCp | FAPI |
| DosGetCtryInfo | FAPI |
| DosGetDateTime | FAPI |
| DosGetDBCSEv | FAPI |
| DosGetEnv | FAPI |
| DosGetHugeShift | FAPI |
| DosGetMachineMode | FAPI |
| DosGetPID | FAPI |
| DosGetVersion | FAPI |
| DosHoldSignal | FAPI |
| DosInsMessage | FAPI |
| DosMkDir | FAPI |
| DosMkDir2 | FAPI |
| DosMonClose | xPM |
| DosMonOpen | xPM |
| DosMonRead | xPM |
| DosMonReg | xPM |
| DosMonWrite | xPM |
| DosMove | FAPI |
| DosNewSize | FAPI |
| DosOpen | FAPI |
| DosOpen2 | FAPI |
| DosPortAccess | FAPI |
| DosPutMessage | FAPI |
| DosQCurDir | FAPI |
| DosQCurDisk | FAPI |
| DosQFHandState | FAPI |
| DosQFileInfo | FAPI |
| DosQFileMode | FAPI |
| DosQFSInfo | FAPI |
| DosQHandType | FAPI |
| DosQPathInfo | FAPI |
| DosQVerify | FAPI |
| DosRead | FAPI |
| DosReallocHuge | FAPI |
| DosReallocSeg | FAPI |
| DosRmDir | FAPI |
| DosSelectDisk | FAPI |
| DosSetCp | FAPI |
| DosSetDateTime | FAPI |
| DosSetFHandState | FAPI |
| DosSetFileInfo | FAPI |
| DosSetFileMode | FAPI |
| DosSetFSInfo | FAPI |
| DosSetPathInfo | FAPI |
| DosSetSigHandler | FAPI |
| DosSetVec | FAPI |
| DosSetVerify | FAPI |
| DosSizeSeg | FAPI |
| DosSleep | FAPI |
| DosSubAlloc | FAPI |
| DosSubFree | FAPI |
| DosSubSet | FAPI |
| DosWrite | FAPI |