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 | Generate 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 from LocalInfoSeg | Yes |
| DosGetHugeShift | Return a shift count used to derive the selectors that address memory allocated with DosAllocHuge | |
| DosGetMachineMode | Returns the current mode of the processor | |
| DosGetMessage | Retrieve a message from the specified system message file | |
| DosGetVersion | Return the OS version number via GlobalInfoSeg | Yes |
| DosInsMessage | Insert variable text string information into the body of a message | |
| DosMkDir | Create a subdirectory | |
| DosMkDir2 | Create a subdirectory with EA | |
| DosMove | Move a file object to another location, change its name | |
| DosNewSize | Changes the size of a file | |
| DosPutMessage | Output the message | |
| DosQCurDir | Returns the full path name of the current directory | |
| DosQCurDisk | Determines the current default drive for the requesting process | |
| DosQFileMode | Queries the mode (attribute) of the specified file | |
| DosQFSInfo | Query file system info | |
| DosQVerify | Returns the value of the verify flag | |
| DosRmDir | Removes a subdirectory from the specified disk | |
| DosSelectDisk | Selects the drive specified as the default drive | |
| DosSetDateTime | Set the date and time | |
| DosSetFileInfo | Set attribute and extended attribute information for a file | |
| DosSetFileMode | Changes the mode (attribute) of the specified file | |
| DosSetVerify | Sets write verification | |
| DosSleep | Suspend the current thread for a specified time | |
| DosSubAlloc | Suballocate portions of a segment | |
| DosSubFree | Free memory previously allocated by DosSubAlloc | |
| DosSubSet | Initialize a segment for suballocation | |
| DosWrite | Write buffer to file | |
| DosAllocHuge | Allocate multiple segments as a huge block of memory | |
| DosAllocSeg | Allocate a data segment up to 64KB in size | |
| DosCaseMap | Case mapping on a string | |
| DosDevIOCtl | Control functions on a device | |
| DosDevIOCtl2 | Control functions on a device | |
| DosError | Receive hard error notification | |
| DosErrClass | Receive hard error code information | |
| DosExecPgm | Execute another program as a child process | |
| DosExit | End The current thread or process | |
| DosFileLocks | Locks and unlock a range in an opened file | |
| DosFindClose | Finish DosFindFirst or DosFindNext directory search function sequence | |
| DosFindFirst | Finds the first file object or group of file objects whose name(s) match the specification | |
| DosFindFirst2 | Finds the first file object or group of file objects whose name(s) match the specification | |
| DosFindNext | Locate the next set of directory entries | |
| DosGetCtryInfo | Obtain country-dependent formatting information that resides in the country information file | |
| DosGetDBCSEv | Obtain a DBCS (double byte character set) environmental vector that resides in the country information file | |
| DosGetCP | Query the current process code page and the prepared system code pages | |
| DosSetCP | Set process code page and the session's display code page and keyboard code page | |
| DosGetCollate | Obtain a collating sequence table | |
| DosHoldSignal | Temporarily disable or enable signal processing for the current process | |
| DosOpen | Open a file, a named pipe, or a device | |
| DosOpen2 | Open a file with extended attributes | |
| DosQFileInfo | Return information for a specific file | |
| DosRead | Read the specified number of bytes from a file, pipe, or device to a buffer location | |
| DosReallocHuge | Change the size of memory originally allocated by DosAllocHuge | |
| DosReallocSeg | Reallocate a segment after discard or changes the size of a segment already allocated | |
| DosSetCtryCode | ||
| DosSetFHandState | Set the state of the specified file | |
| DosSetSigHandler | Set signal handler | |
| DosAllocShrSeg | Allocate a named shared memory segment to a process | |
| DosGetShrSeg | Accesses a shared memory segment previously allocated by another process | |
| DosLoadModule | Load a dynamic link module and returns a handle for the module | |
| DosFreeModule | Free the reference to a dynamic link module for a process | |
| DosQHandType | Get handle type | |
| DosGetProcAddr | Get module procedure address | |
| DosGetPID | Get process id via LocalInfoSeg | Yes |
| DosSetMaxFH | Set maximum file handlers | |
| DosGetModHandle | Get module handle | |
| DosQPathInfo | Get path information | |
| DosQFSAttach | Query information about an attached file system | |
| DosQSysInfo | Query system variablies values | |
| DosMemAvail | Query maximum availabe huge memory block | |
| DosGetInfoSeg | Query global and local information segments | |
| KbdCharIn | Return a character data record from the keyboard | |
| KbdFlushBuffer | Clear the keystroke buffer | |
| KbdGetStatus | Get the current state of the keyboard | |
| KbdSetStatus | Set the characteristics of the keyboard | |
| KbdStringIn | Read a character string (character codes only) from the keyboard | |
| KbdPeek | Return any available character data record from the keyboard without removing it from the buffer | |
| KbdOpen | Create a new logical keyboard | |
| KbdClose | Close the existing logical keyboard | |
| KbdGetFocus | ||
| KbdFreeFocus | ||
| KbdGetCp | ||
| KbdSetCp | ||
| KbdXlate | ||
| KbdSetCustXt | ||
| KbdGetHWId | ||
| KbdRegister | ||
| KbdDeRegister | ||
| MouRegister | ||
| MouDeRegister | ||
| MouGetNumButtons | ||
| MouGetNumMickeys | ||
| MouGetDevStatus | ||
| MouGetNumQueEl | ||
| MouReadEventQue | ||
| MouGetScaleFact | ||
| MouGetEventMask | ||
| MouSetScaleFact | ||
| MouSetEventMask | ||
| MouGetHotKey | ||
| MouSetHotKey | ||
| MouOpen | ||
| MouClose | ||
| MouGetPtrShape | ||
| MouSetPtrShape | ||
| MouDrawPtr | ||
| MouRemovePtr | ||
| MouGetPtrPos | ||
| MouSetPtrPos | ||
| MouInitReal | ||
| MouFlushQue | ||
| MouSetDevStatus | ||
| VioGetBuf | Return the address of the logical video buffer (LVB) | |
| VioGetCurPos | Return the coordinates of the cursor | |
| VioGetCurType | Get cursor type | |
| VioGetPhysBuf | Get addressability to the physical display buffer | |
| VioReadCellStr | Read a string of character-attribute pairs from the screen | |
| VioReadCharStr | Read a string of characters from the display | |
| VioScrollDn | Scroll the entire display buffer (or area specified within the display buffer) down | |
| VioScrollLf | Scroll the entire display buffer (or area specified within the display buffer) to the left | |
| VioScrollRt | Scroll the entire display buffer (or area specified within the display buffer) to the right | |
| VioScrUnLock | Release ownership of (unlocks) the physical display buffer | |
| VioSetCurPos | Set the cursor's coordinates on the screen | |
| VioSetCurType | Set the cursor type | |
| VioSetMode | Set the mode of the display | |
| VioShowBuf | Update the physical display buffer with the logical video buffer (LVB) | |
| VioWrtCellStr | Write a string of character-attribute pairs (cells) to the display | |
| VioWrtCharStr | Write a character string to the display | |
| VioWrtCharStrAtt | Write a character string with repeated attribute to the display | |
| VioWrtNAttr | Write an attribute to the display a specified number of times | |
| VioWrtNCell | Write a cell (character-attribute pair) to the display a specified number of times | |
| VioWrtNChar | Write a character to the display a specified number of times | |
| VioWrtTTY | Write a character string to the display starting at the current cursor position | |
| VioScrLock | Request ownership of (locks) the physical display buffer | |
| VioGetMode | Return the mode of the display | |
| VioGetConfig | Return the video display configuration | |
| VioGetAnsi | Return the current ANSI status On/Off state | |
| VioSetAnsi | Activate or deactivate ANSI support | |
| VioScrollUp | Sroll the entire display buffer (or area specified within the display buffer) up | |
| VioDeRegister | Deregister alternate video system | |
| VioRegister | Register alternate video system | |
| VioGetState | Return the current settings of adapter | |
| VioSetState | Set the current settings of adapter | |
| VioGetCP | Query the code page for display | |
| VioSetCP | Set the code page for display | |
| VioGetFont | Get current font | |
| VioSetFont | Set current font | |
| VioModeWait | Notify process about it must restore its video mode | |
| VioModeUndo | ||
| VioPopUp | Show temporary screen to display message | |
| VioEndPopUp | Return from temporary screen | |
| VioSavRedrawWait | Notifies application when it must save/redraw its screen | |
| VioSavRedrawUndo | ||
| VioPrtSc | Dump screen to printer | |
| VioPrtScToggle | Toggle VioWrtTty also write to printer | |