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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
| Name | Description | Cross-platform | ||||
|---|---|---|---|---|---|---|
| BadDynLink | This is DOS specific version function which called during module loading if linking error is detected. It shows message and terminates via int 21h Terminate call | - | ||||
| DosBeep | Generates sound from the speaker using direct port I/O | No | ||||
| DosBufReset | Flushes a file cache buffers | |||||
| DosChDir | Defines the current directory for the requesting process | |||||
| DosChgFilePtr | Moves the read/write pointer | |||||
| DosClose | Closes a handle to a file, pipe, or device | |||||
| DosCreateCSAlias | Create CS alias from data segment | |||||
| DosCLIAccess | Request I/O privilege for disabling and enabling interrupts | |||||
| DosPortAccess | Request or release access to ports for I/O privilege | |||||
| DosDelete | Removes a directory entry associated with a file name | |||||
| DosDevConfig | Return device configuration | |||||
| DosDupHandle | Returns a new file handle for an open file | |||||
| DosFreeSeg | Deallocates a memory segment | |||||
| DosGetDateTime | Get the current date and time | |||||
| DosGetEnv | Return process environment for the current process | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosGetHugeShift | Return a shift count used to derive the selectors that address memory allocated with DosAllocHuge | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosGetMachineMode | Returns the current mode of the processor | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosGetMessage | Retrieve a message from the specified system message file | DOSCALLS | API/FAPI | 1.00 | ||
| DosGetVersion | Return the OS version number | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosInsMessage | Insert variable text string information into the body of a message | DOSCALLS | API/FAPI | 1.00 | ||
| DosMkDir | Create a subdirectory | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosMkDir2 | Create a subdirectory with EA | DOSCALLS | API/FAPI | Done | Done | ???? |
| DosMove | Move a file object to another location, change its name | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosNewSize | Changes the size of a file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosPutMessage | Output the message | DOSCALLS | API/FAPI | 1.00 | ||
| DosQCurDir | Returns the full path name of the current directory | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosQCurDisk | Determines the current default drive for the requesting process | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosQFileMode | Queries the mode (attribute) of the specified file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosQFSInfo | Query file system info | DOSCALLS | API/FAPI | 1.00 | ||
| DosQVerify | Returns the value of the verify flag | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosRmDir | Removes a subdirectory from the specified disk | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosSelectDisk | Selects the drive specified as the default drive | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosSetDateTime | Set the date and time | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosSetFileInfo | Set attribute and extended attribute information for a file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosSetFileMode | Changes the mode (attribute) of the specified file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosSetVerify | Sets write verification | DOSCALLS | API/FAPI | Done | Done | 1.00 |
| DosSleep | Suspend the current thread for a specified time | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosSubAlloc | Suballocate portions of a segment | DOSCALLS | API/FAPI | 1.00 | ||
| DosSubFree | Free memory previously allocated by DosSubAlloc | DOSCALLS | API/FAPI | 1.00 | ||
| DosSubSet | Initialize a segment for suballocation | DOSCALLS | API/FAPI | 1.00 | ||
| DosWrite | Write buffer to file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosAllocHuge | Allocate multiple segments as a huge block of memory | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosAllocSeg | Allocate a data segment up to 64KB in size | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosCaseMap | Case mapping on a string | DOSCALLS | API/FAPI | 1.10 | ||
| DosDevIOCtl | Control functions on a device | DOSCALLS | API/FAPI | 1.00 | ||
| DosDevIOCtl2 | Control functions on a device | DOSCALLS | API/FAPI | ???? | ||
| DosError | Receive hard error notification | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosErrClass | Receive hard error code information | DOSCALLS | API/FAPI | 1.10 | ||
| DosExecPgm | Execute another program as a child process | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosExit | End The current thread or process | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosFileLocks | Locks and unlock a range in an opened file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosFindClose | Finish DosFindFirst or DosFindNext directory search function sequence | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosFindFirst | Finds the first file object or group of file objects whose name(s) match the specification | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosFindFirst2 | Finds the first file object or group of file objects whose name(s) match the specification | DOSCALLS | API/FAPI | ??? | ||
| DosFindNext | Locate the next set of directory entries | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosGetCtryInfo | Obtain country-dependent formatting information that resides in the country information file | DOSCALLS | API/FAPI | 1.10 | ||
| DosGetDBCSEv | Obtain a DBCS (double byte character set) environmental vector that resides in the country information file | DOSCALLS | API/FAPI | Done | 1.10 | |
| DosGetCP | Query the current process code page and the prepared system code pages | DOSCALLS | API/FAPI | Done | 1.10 | |
| DosSetCP | Set process code page and the session's display code page and keyboard code page | DOSCALLS | API/FAPI | Done | 1.10 | |
| DosGetCollate | Obtain a collating sequence table | DOSCALLS | API/FAPI | 1.10 | ||
| DosHoldSignal | Temporarily disable or enable signal processing for the current process | DOSCALLS | API/FAPI | 1.00 | ||
| DosOpen | Open a file, a named pipe, or a device | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosOpen2 | Open a file with extended attributes | DOSCALLS | API/FAPI | ???? | ||
| DosQFileInfo | Return information for a specific file | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosRead | Read the specified number of bytes from a file, pipe, or device to a buffer location | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosReallocHuge | Change the size of memory originally allocated by DosAllocHuge | DOSCALLS | API/FAPI | 1.00 | ||
| DosReallocSeg | Reallocate a segment after discard or changes the size of a segment already allocated | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosSetCtryCode | DOSCALLS | API/FAPI | 1.00 | |||
| DosSetFHandState | Set the state of the specified file | DOSCALLS | API/FAPI | 1.00 | ||
| DosSetSigHandler | Set signal handler | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosAllocShrSeg | Allocate a named shared memory segment to a process | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosGetShrSeg | Accesses a shared memory segment previously allocated by another process | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosLoadModule | Load a dynamic link module and returns a handle for the module | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosFreeModule | Free the reference to a dynamic link module for a process | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosQHandType | Get handle type | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosGetProcAddr | Get module procedure address | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosGetPID | Get process id | DOSCALLS | API/FAPI | Done | 1.00 | |
| DosSetMaxFH | Set maximum file handlers | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosGetModHandle | Get module handle | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosQPathInfo | Get path information | DOSCALLS | API/FAPI | 1.?? | ||
| DosQFSAttach | Query information about an attached file system | DOSCALLS | API/FAPI | 1.?? | ||
| DosQSysInfo | Query system variablies values | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosMemAvail | Query maximum availabe huge memory block | DOSCALLS | API/FAPI | Done | 1.20 | |
| DosGetInfoSeg | Query global and local information segments | DOSCALLS | API/FAPI | Done | 1.20 | |
| KbdCharIn | Return a character data record from the keyboard | KBDCALLS | API/FAPI | Done | 1.00 | |
| KbdFlushBuffer | Clear the keystroke buffer | KBDCALLS | API/FAPI | Done | 1.00 | |
| KbdGetStatus | Get the current state of the keyboard | KBDCALLS | API/FAPI | Done | 1.00 | |
| KbdSetStatus | Set the characteristics of the keyboard | KBDCALLS | API/FAPI | 1.00 | ||
| KbdStringIn | Read a character string (character codes only) from the keyboard | KBDCALLS | API/FAPI | 1.00 | ||
| KbdPeek | Return any available character data record from the keyboard without removing it from the buffer | KBDCALLS | API/FAPI | Done | 1.00 | |
| KbdOpen | Create a new logical keyboard | KBDCALLS | API/FAPI | Done | 1.20 | |
| KbdClose | Close the existing logical keyboard | KBDCALLS | API/FAPI | Done | 1.20 | |
| KbdGetFocus | KBDCALLS | API/FAPI | Done | 1.20 | ||
| KbdFreeFocus | KBDCALLS | API/FAPI | Done | 1.20 | ||
| KbdGetCp | KBDCALLS | API/FAPI | 1.20 | |||
| KbdSetCp | KBDCALLS | API/FAPI | 1.20 | |||
| KbdXlate | KBDCALLS | API/FAPI | 1.20 | |||
| KbdSetCustXt | KBDCALLS | API/FAPI | 1.20 | |||
| KbdGetHWId | KBDCALLS | API/FAPI | 1.20 | |||
| KbdRegister | KBDCALLS | API/FAPI | 1.20 | |||
| KbdDeRegister | KBDCALLS | API/FAPI | 1.20 | |||
| MouRegister | KBDCALLS | API/FAPI | 1.20 | |||
| MouDeRegister | KBDCALLS | API/FAPI | 1.20 | |||
| MouGetNumButtons | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetNumMickeys | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetDevStatus | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetNumQueEl | MOUCALLS | API/FAPI | 1.20 | |||
| MouReadEventQue | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetScaleFact | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetEventMask | MOUCALLS | API/FAPI | 1.20 | |||
| MouSetScaleFact | MOUCALLS | API/FAPI | 1.20 | |||
| MouSetEventMask | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetHotKey | MOUCALLS | API/FAPI | 1.20 | |||
| MouSetHotKey | MOUCALLS | API/FAPI | 1.20 | |||
| MouOpen | MOUCALLS | API/FAPI | 1.20 | |||
| MouClose | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetPtrShape | MOUCALLS | API/FAPI | 1.20 | |||
| MouSetPtrShape | MOUCALLS | API/FAPI | 1.20 | |||
| MouDrawPtr | MOUCALLS | API/FAPI | 1.20 | |||
| MouRemovePtr | MOUCALLS | API/FAPI | 1.20 | |||
| MouGetPtrPos | MOUCALLS | API/FAPI | 1.20 | |||
| MouSetPtrPos | MOUCALLS | API/FAPI | 1.20 | |||
| MouInitReal | MOUCALLS | API/FAPI | 1.20 | |||
| MouFlushQue | MOUCALLS | API/FAPI | 1.20 | |||
| MouSetDevStatus | MOUCALLS | API/FAPI | 1.20 | |||
| VioGetBuf | Return the address of the logical video buffer (LVB) | VIOCALLS | API/FAPI | 1.20 | ||
| VioGetCurPos | Return the coordinates of the cursor | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioGetCurType | Get cursor type | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioGetPhysBuf | Get addressability to the physical display buffer | VIOCALLS | API/FAPI | 1.00 | ||
| VioReadCellStr | Read a string of character-attribute pairs from the screen | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioReadCharStr | Read a string of characters from the display | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioScrollDn | Scroll the entire display buffer (or area specified within the display buffer) down | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioScrollLf | Scroll the entire display buffer (or area specified within the display buffer) to the left | VIOCALLS | API/FAPI | 1.00 | ||
| VioScrollRt | Scroll the entire display buffer (or area specified within the display buffer) to the right | VIOCALLS | API/FAPI | 1.00 | ||
| VioScrUnLock | Release ownership of (unlocks) the physical display buffer | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioSetCurPos | Set the cursor's coordinates on the screen | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioSetCurType | Set the cursor type | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioSetMode | Set the mode of the display | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioShowBuf | Update the physical display buffer with the logical video buffer (LVB) | VIOCALLS | API/FAPI | 1.20 | ||
| VioWrtCellStr | Write a string of character-attribute pairs (cells) to the display | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioWrtCharStr | Write a character string to the display | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioWrtCharStrAtt | Write a character string with repeated attribute to the display | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioWrtNAttr | Write an attribute to the display a specified number of times | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioWrtNCell | Write a cell (character-attribute pair) to the display a specified number of times | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioWrtNChar | Write a character to the display a specified number of times | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioWrtTTY | Write a character string to the display starting at the current cursor position | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioScrLock | Request ownership of (locks) the physical display buffer | VIOCALLS | API/FAPI | Done | 1.00 | |
| VioGetMode | Return the mode of the display | VIOCALLS | API/FAPI | Done | 1.20 | |
| VioGetConfig | Return the video display configuration | VIOCALLS | API/FAPI | Done | 1.?? | |
| VioGetAnsi | Return the current ANSI status On/Off state | VIOCALLS | API/FAPI | Done | 1.20 | |
| VioSetAnsi | Activate or deactivate ANSI support | VIOCALLS | API/FAPI | Done | 1.20 | |
| VioScrollUp | Sroll the entire display buffer (or area specified within the display buffer) up | VIOCALLS | API/FAPI | Done | 1.20 | |
| VioDeRegister | Deregister alternate video system | VIOCALLS | API/FAPI | Done | 1.20 | |
| VioRegister | Register alternate video system | VIOCALLS | API/FAPI | Done | 1.20 | |
| VioGetState | Return the current settings of adapter | VIOCALLS | API/FAPI | 1.?? | ||
| VioSetState | Set the current settings of adapter | VIOCALLS | API/FAPI | 1.?? | ||
| VioGetCP | Query the code page for display | VIOCALLS | API/FAPI | 1.20 | ||
| VioSetCP | Set the code page for display | VIOCALLS | API/FAPI | 1.20 | ||
| VioGetFont | Get current font | VIOCALLS | API/FAPI | 1.?? | ||
| VioSetFont | Set current font | VIOCALLS | API/FAPI | 1.?? | ||
| VioModeWait | Notify process about it must restore its video mode | VIOCALLS | API/FAPI | 1.20 | ||
| VioModeUndo | VIOCALLS | API/FAPI | 1.20 | |||
| VioPopUp | Show temporary screen to display message | VIOCALLS | API/FAPI | 1.20 | ||
| VioEndPopUp | Return from temporary screen | VIOCALLS | API/FAPI | 1.20 | ||
| VioSavRedrawWait | Notifies application when it must save/redraw its screen | VIOCALLS | API/FAPI | 1.20 | ||
| VioSavRedrawUndo | VIOCALLS | API/FAPI | 1.20 | |||
| VioPrtSc | Dump screen to printer | VIOCALLS | API/FAPI | 1.20 | ||
| VioPrtScToggle | Toggle VioWrtTty also write to printer | VIOCALLS | API/FAPI | 1.20 | ||