In This Section Clipcursor This Function Confines The Cursor To

In This Section ClipCursor This function confines the cursor to a rectangular area on the screen. CreateCursor This function creates a cursor having the specified size, bit patterns, and hot spot. DestroyCursor This function destroys a cursor created by the CreateCursor function and frees any memory the cursor occupied. GetCapture This function retrieves the handle to the window, if any, that has captured the mouse or stylus input. GetClipCursor This function retrieves the screen coordinates of the rectangular area to which the cursor is confined. GetCursor This function retrieves the handle to the current cursor. GetCursorPos This function retrieves the cursor's position, in screen coordinates. GetDoubleClickTime This function retrieves the current double-click time for the mouse or stylus. GetMouseMovePoints This function retrieves points, associated with WM_LBUTTONDOWN and WM_MOUSEMOVE messages, that the OS typically discards when an application cannot process these messages as fast as the application receives these messages. LoadAnimatedCursor This function enables an application to define and load a customized, animated wait cursor. LoadCursor This function loads a cursor resource. mouse_event This function synthesizes mouse motion and button clicks. ReleaseCapture

This function releases the mouse or stylus capture from a window in the current thread and restores normal processing of input. SetCapture This function sets the mouse or style capture to a specified window that belongs to the current thread. SetCursor This function establishes the cursor shape. SetCursorPos This function moves the cursor to the specified screen coordinates. ShowCursor This function displays or hides the cursor.

The mouse is controlled using the mouse functions at interrupt 33h. There are many functions, but this section will only cover the basic set required to get things going. For more information, see the references on the web page. In order to use the mouse, you must first call Function 0000h (Reset Driver and Read Status). This initializes the drivers and hardware. The mouse cursor will initially be hidden, so you must use Function 0001h (Show Mouse Cursor) to make it visible. From then on, just call Function 0003h (Return Position and Button Status) to get the position and button status whenever your program needs it. Make sure you hide the mouse cursor before your program exits.

In computing, a keyboard is an input device, partially modeled after the typewriter keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However, to produce some symbols requires pressing and holding several keys simultaneously or in sequence. While most keyboard keys produce letters, numbers or signs (characters), other keys or simultaneous key presses can produce actions or computer commands. In normal usage, the keyboard is used to type text and numbers into a word processor, text editor or other program. In a modern computer, the interpretation of keypresses is generally left to the software. A computer keyboard distinguishes each physical key from every other and reports all keypresses to the controlling software. Keyboards are also used for computer gaming, either with regular keyboards or by using keyboards with special gaming features, which can expedite frequently used keystroke combinations. A keyboard is also used to give commands to the operating system of a computer, such as Windows' Control-Alt-Delete combination, which brings up a task