{{page>en:templates:fapiint}}


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