HP OpenVMS systems documentation

Chapter 21
21	STARLET Structures and Definitions for C Programmers
21.1	SYS$STARLET_C.TLB Equivalency to STARLETSD.TLB
21.2	NEW STARLET Definitions for C
Part 5
Part 5	I/O, System, and Programming Routines
Chapter 22
22	Run-Time Library Input/Output Operations
22.1	Choosing I/O Techniques
22.2	Using SYS$INPUT and SYS$OUTPUT
22.2.1	Default Input and Output Devices
22.2.2	Reading and Writing to Alternate Devices and External Files
22.3	Working with Simple User I/O
22.3.1	Default Devices for Simple I/O
22.3.2	Getting a Line of Input
22.3.3	Getting Several Lines of Input
22.3.4	Writing Simple Output
22.4	Working with Complex User I/O
22.4.1	HP DECwindows Motif
22.4.1.1	DECwindows Server Height or Width Exceeding 32767 (VAX Only)
22.4.2	SMG$ Run-Time Routines
22.4.3	Pasteboards
22.4.3.1	Erasing a Pasteboard
22.4.3.2	Deleting a Pasteboard
22.4.3.3	Setting Screen Dimensions and Background Color
22.4.4	Virtual Displays
22.4.4.1	Creating a Virtual Display
22.4.4.2	Pasting Virtual Displays
22.4.4.3	Rearranging Virtual Displays
22.4.4.4	Removing Virtual Displays
22.4.4.5	Modifying a Virtual Display
22.4.4.6	Using Spawned Subprocesses
22.4.5	Viewports
22.4.6	Writing Text to Virtual Display
22.4.6.1	Positioning the Cursor
22.4.6.2	Writing Data Character by Character
22.4.6.3	Writing Data Line by Line
22.4.6.4	Drawing Lines
22.4.6.5	Deleting Text
22.4.7	Using Menus
22.4.8	Reading Data
22.4.8.1	Reading from a Display
22.4.8.2	Reading from a Virtual Keyboard
22.4.8.3	Reading from the Keypad
22.4.8.4	Reading Composed Input
22.4.9	Controlling Screen Updates
22.4.10	Maintaining Modularity
22.5	Performing Special Input/Output Actions
22.5.1	Using Ctrl/C and Ctrl/Y Interrupts
22.5.2	Detecting Unsolicited Input
22.5.3	Using the Type-Ahead Buffer
22.5.4	Using Echo
22.5.5	Using Timeout
22.5.6	Converting Lowercase to Uppercase
22.5.7	Performing Line Editing and Control Actions
22.5.8	Using Broadcasts
22.5.8.1	Default Handling of Broadcasts
22.5.8.2	How to Create Alternate Broadcast Handlers
Chapter 23
23	System Service Input/Output Operations
23.1	Overview of OpenVMS QIO Operations
23.2	Quotas, Privileges, and Protection
23.2.1	Buffered I/O Quota
23.2.2	Buffered I/O Byte Count Quota
23.2.3	Direct I/O Quota
23.2.4	AST Quota
23.2.5	Physical I/O Privilege
23.2.6	Logical I/O Privilege
23.2.7	Mount Privilege
23.2.8	Share Privilege
23.2.9	Volume Protection
23.2.10	Device Protection
23.2.11	System Privilege
23.2.12	Bypass Privilege
23.3	Physical, Logical, and Virtual I/O
23.3.1	Physical I/O Operations
23.3.2	Logical I/O Operations
23.3.3	Virtual I/O Operations
23.4	I/O Function Encoding
23.4.1	Function Codes
23.4.2	Function Modifiers
23.5	Assigning Channels
23.5.1	Using the Share Privilege with the SYS$ASSIGN and SYS$DASSGN Services
23.6	Queuing I/O Requests
23.7	Synchronizing Service Completion
23.8	Recommended Method for Testing Asynchronous Completion
23.9	Synchronous and Asynchronous Forms of Input/Output Services
23.9.1	Reading Operations with SYS$QIOW
23.9.2	Reading Operations with SYS$QIO
23.9.3	Write Operations with SYS$QIOW
23.10	I/O Completion Status
23.11	Deassigning I/O Channels
23.12	Using Complete Terminal I/O
23.13	Canceling I/O Requests
23.14	Logical Names and Physical Device Names
23.15	Device Name Defaults
23.16	Obtaining Information About Physical Devices
23.16.1	Checking the Terminal Device
23.16.2	Terminal Characteristics
23.16.3	Record Terminators
23.16.4	File Terminators
23.17	Device Allocation
23.17.1	Implicit Allocation
23.17.2	Deallocation
23.18	Mounting, Dismounting, and Initializing Volumes
23.18.1	Mounting a Volume
23.18.1.1	Calling the SYS$MOUNT System Service
23.18.1.2	Calling the SYS$DISMOU System Service
23.18.2	Initializing Volumes
23.18.2.1	Calling the Initialize Volume System Service
23.18.2.2	Expanding Volumes Dynamically
23.19	Formatting Output Strings
23.20	Mailboxes
23.20.1	Mailbox Name
23.20.2	System Mailboxes
23.20.3	Mailboxes for Process Termination Messages
23.21	Example of Using I/O Services
23.22	Fast I/O and Fast Path Features (Alpha and I64 Only)
23.22.1	Fast I/O (Alpha and I64 Only)
23.22.1.1	Fast I/O Benefits
23.22.1.2	Buffer Objects
23.22.2	Fast Path (Alpha and I64 Only)
23.22.2.1	Fast Path Features and Benefits
23.22.2.2	Additional Information About Fast Path