Control Program Functions

Some general information is available at Control Program page.

File Management

File Functions

DosClose - Closes a file handle
DosCopy - Copies a file or subdirectory
DosDelete - Deletes a file
DosEditName - Transforms a file name
DosMove - Moves a file or subdirectory
DosOpen - Gets a handle to a file, pipe, or device
DosRead - Reads from a file, pipe, or device
DosSetFileInfo - Sets information for an open file
DosSetFileLocks - Locks and unlocks a range in a file
DosSetFilePtr - Moves the position of the file pointer
DosSetFileSize - Changes the size of a file
DosSetPathInfo - Sets information for a file or subdirectory
DosSetVerify - Enables write verification
DosWrite - Writes data to a file, pipe, or device

File Handle Functions

DosDupHandle - Duplicates a file handle
DosQueryFHState - Gets the file handle state
DosQueryHType - Gets the handle type
DosSetFHState - Sets the file handle state
DosSetMaxFH - Sets the maximum number of file handles

File Query Functions

DosEnumAttribute - Gets the name and size of a file object's extended attributes
DosQueryFileInfo - Gets information for an open file
DosQueryPathInfo - Gets information for a file or subdirectory
DosQuerySysInfo - Gets values of system variables
DosQueryVerify - Determines whether or not write verification is enabled

Directory Search (FileFind) Functions

DosFindClose - Ends a search for matching file objects
DosFindFirst - Begins a search for matching file objects
DosFindNext - Continues a search for matching file objects

Directory and Disk Functions

DosCreateDir - Creates a subdirectory
DosDeleteDir - Deletes an empty subdirectory
DosQueryCurrentDir - Gets the current directory
DosQueryCurrentDisk - Gets the current drive
DosSetCurrentDir - Sets the current directory
DosSetDefaultDisk - Sets the default drive

Environment and Search Path Functions

DosScanEnv - Gets information for a file or subdirectory
DosSearchPath - Scans environment variable
DosQueryPathInfo - Searches along a specified path
DosSetPathInfo - Sets information for a file or subdirectory

Extended LIBPATH Search Path Functions

DosQueryExtLIBPATH - Queries the search path for Dynamic Link Library, which is either before or after LIBPATH search
DosSetExtLIBPATH - Sets a search path for Dynamic Link Library, either before or after LIBPATH search

Memory Management

Memory Functions

DosAllocMem - Allocates a private memory object within the virtual address space
DosFreeMem - Frees a private or shared memory object from the virtual address space of the process
DosQueryMem - Obtains information about a range of pages within the virtual address space of the subject process
DosSetMem - Commits or decommits a range of pages within a memory object, or alters their protection

Memory Suballocation Functions

DosSubAllocMem - Suballocates a block of memory from a heap that was previously initialized
DosSubFreeMem - Frees a block of memory that was previously suballocated
DosSubSetMem - Initializes a heap for suballocation, or increases the size of a previously initialized heap
DosSubUnsetMem - Terminates the use of a heap

Shared Memory Functions

DosAllocSharedMem - Allocates a shared memory object within the virtual address space
DosGetNamedSharedMem - Obtains access to an existing named shared memory object
DosGetSharedMem - Obtains access to an existing shared memory object
DosGiveSharedMem - Gives a target process access to an existing shared memory object

Thread Local Memory Functions

DosAllocThreadLocalMemory - Allocates a block of memory that is unique, or local, to a thread
DosFreeThreadLocalMemory - Frees a block of thread-local memory

Program Execution Control

Thread Control Functions

DosCreateThread
DosEnterCritSec
DosExit - Terminates thread execution in the current process
DosExitCritSec - Enables thread switching for the current process
DosGetInfoBlocks
DosKillThread
DosResumeThread
DosSetPriority
DosSuspendThread
DosWaitThread

Process Control Functions

DosExecPgm - Executes another program as a child process
DosExitList - Defines a list of routines to be executed when the current process ends
DosKillProcess
DosWaitChild - Waits for a child process to end

Session Control Functions

DosSelectSession
DosSetSession - Sets the status of a child session
DosStartSession - Starts an unrelated or child session
DosStopSession - Terminates one or all child sessions

Semaphore Functions

Event Semaphore Functions

DosCloseEventSem - Closes an event semaphore
DosCreateEventSem - Creates an event semaphore
DosOpenEventSem - Opens an event semaphore for use
DosPostEventSem - Posts an event semaphore
DosQueryEventSem
DosResetEventSem - Resets an event semaphore
DosWaitEventSem

Mutex Semaphore Functions

Muxwait Semaphore Functions

DosAddMuxWaitSem
DosCloseMuxWaitSem
DosCreateMuxWaitSem
DosDeleteMuxWaitSem
DosOpenMuxWaitSem
DosQueryMuxWaitSem
DosWaitMuxWaitSem - Waits for a muxwait semaphore to clear

Pipe Functions

Named-Pipe Functions

DosCallNPipe
DosConnectNPipe
DosCreateNPipe - Creates a named pipe
DosDisConnectNPipe
DosPeekNPipe
DosQueryNPHState
DosQueryNPipeInfo
DosQueryNPipeSemState
DosSetNPHState - Resets the blocking mode and the read mode of a named pipe
DosSetNPipeSem - Attaches a shared event semaphore to a local named pipe
DosTransactNPipe - Writes to a duplex message pipe, then reads from it
DosWaitNPipe - Waits for an instance of a named pipe to become available

Unnamed-Pipe Functions

DosClose - Closes a file or pipe
DosCreatePipe - Creates an unnamed (anonymous) pipe
DosDupHandle, DosOpen, DosRead, DosWrite

Queue Functions

DosCloseQueue - Closes a queue
DosCreateQueue - Creates a queue
DosOpenQueue - Opens a queue
DosPeekQueue
DosPurgeQueue
DosQueryQueue - Returns the number of elements in a queue
DosReadQueue
DosWriteQueue - Writes an element to a queue

Timer Functions

DosAsyncTimer
DosSleep - Suspends the current thread for a specified time interval
DosStartTimer
DosStopTimer

Error Management Functions

DosErrClass
DosError - Disables and enables hard-error and exception pop-up messages

Exception Handling Functions

DosRaiseException - Raises an exception
DosSetExceptionHandler - Registers an exception handler
DosUnsetExceptionHandler
DosUnwindException

Signal Exception Functions

DosAcknowledgeSignalException
DosSendSignalException
DosSetSignalExceptionFocus - Sets keyboard signal focus

Must-Complete Functions

DosEnterMustComplete - Enters a must-complete section of code
DosExitMustComplete - Exits a must-complete section of code

Device I/O Functions

File System Functions Used to Perform I/O to Devices:

DosClose
DosOpen
DosRead
DosWrite

Message Management Functions

DosGetMessage
DosInsertMessage
DosPutMessage - Sends a message to an output file or device
DosQueryMessageCP - Retrieves a message file list of code pages and language identifiers

Code Page Management Functions

Code Page Functions

DosQueryCp
DosSetProcessCp - Sets the code page of a process

Country Dependent Functions

Debugging Functions

DosDebug - Used by one process to control another for debugging purposes

Dynamic Linking Functions

DosFreeModule - Frees the reference to the dynamic link module for the process
DosLoadModule - Loads a dynamic link module, and returns a handle for the module
DosQueryModuleHandle
DosQueryModuleName
DosQueryProcAddr - Returns the address of the specified procedure within a dynamic link module

Dos...

Large File System

DosCancelLockRequestL
DosListIOL - Performs the specified number of seek/read or seek/write operations
DosOpenL - Opens a file
DosProtectOpenL - Opens a file returning a protected file handle
DosProtectSetFileLocksL - Locks and unlocks a range of an open file
DosProtectSetFilePtrL - Moves the read or write pointer
DosProtectSetFileSizeL - Changes the size of a file
DosSetFileLocksL - Locks and unlocks a range of an open file
DosSetFilePtrL - Moves the read or write pointer
DosSetFileSizeL - Changes the size of a file

Unsorted

Date/Time

Error Management

Exception Management

File Systems/File Management

File Manipulation

File Handle Manipulation

File Querying

File System Functions

Resource Management

Threads

VDD

Kbd, Mou, Vio

Keyboard functions

Mouse functions

Video I/O functions

Advanced VIO

Icon Legend

: It seems that these functions were not implemented on the OS/2 4.5 Toolkit.
: These functions were documented on the Addendum of the OS/2 4.5 Toolkit.
: More information is required on this function.

Legacy Functions

This are the legacy functions of the Control Program Interface API. This functions are supposed to be replaced by the newer ones, but some of these are still required for older programs to work or because some newer functions weren't implemented correctly.

Date / Time

Device I/O

Dynamic Linking Library

Monitor functions

Dynamic Link Library

Error Management

OS/2 2.0 and 1.3 only:

Exception Management

DosSendSignal

File Systems/File Management

Directory Searching

Disk

Enviroment/Path

File Manipulation

File Handle Manipulation

File Querying

File System Functions

Memory Management

Heap Memory

Message Management

National Language/Code Page

Pipes

Named Pipes

Resource Management

Semaphores

MuxWait Semaphores

Processes/Threading

Processes

Session Management

Screen Group

Quickhelp

Timer

Addressing

Spool

Not found on OS2TK45

To SORT

Keyboard functions

Mouse functions

Video I/O functions

Advanced VIO

Legend

: More information is required on this function. Information was not available on CP1 or PRCP books.

References

Title	Author	Year	Document Ref.	Links
Control Program Programming Guide and Reference	IBM	1996	CP1.INF, CP2.INF, CP3.INF	PDF, INF 1 INF 2 INF 3
API Addendum Volume 1 (PowerPC Edition)	IBM		APIBAS.INF
Legacy OS/2 Programming Reference	IBM		PRCP.INF