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Key Status
While processing a keyboard message, an application may need to determine the
status of another key besides the one that generated the current message. For
example, a word-processing application that allows the user to press SHIFT+END to select a block of text must check the status of the SHIFT key whenever it receives a keystroke message from the END key. The application can use the GetKeyState function to determine the status of a virtual key at the time the current
message was generated; it can use the GetAsyncKeyState function to retrieve the current status of a virtual key.
The keyboard layout maintains a list of names. The name of a key that produces
a single character is the same as the character produced by the key. The name
of a noncharacter key such as TAB and ENTER is stored as a character string. An application can retrieve the name of any
key from the device driver by calling the GetKeyNameText function.
Related Links
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