H

handle

A variable that identifies an object; an indirect reference to an operating system resource.

H/PC

A Handheld PC.

header control

A horizontal window that is usually positioned above columns of data. It is divided into partitions that correspond to the columns, and each partition contains the title for the column below it.

heap

A portion of memory reserved for a program to use for the temporary storage of data structures whose existence or size cannot be determined until the program is running. The program can request free memory from the heap to hold such elements, use it as necessary, and later free the memory.

hibernation

The way in which a Windows CE-based device manages a memory shortage by requesting applications to free memory that is not currently needed.

hibernation threshold

The point at which the system enters a limited memory state.

high-resolution performance counter

Hardware that provides high-resolution timing useful in improving the performance of applications.

hook

A point in the Windows message-handling mechanism where an application can install a subroutine to monitor the message traffic in the system and process certain types of messages before they reach the target window procedure. Windows CE does not support hooking.

hot key

A keystroke or combination of keystrokes that switches the user to a different program, often a terminate-and-stay-resident (TSR) program or the operating system user interface. Hot keys generate a WM_HOTKEY message

hot spot

The pixel in a cursor that marks the exact screen location affected by a mouse or pen action, such as a button click. Messages include the coordinates of a hot spot.

HTML

See Hypertext Markup Language.

Hypertext Markup Language (HTML) viewer control

A control that provides programmers with the ability to implement the Windows CE Pocket Internet Explorer and the Help engine. It also provides independent software vendors (ISVs) with the ability to implement additional viewers based on the HTML viewer control.

HTTP

See Hypertext Transfer Protocol.

Hypertext Markup Language (HTML)

A markup language derived from the Standard Generalized Markup Language (SGML). Used to create a text document with formatting specifications that tells a software browser how to display the page or pages included in the document.

Hypertext Transfer Protocol (HTTP)

The client/server protocol used to access information on the Web.