GetAsyncKeyState.md

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Function name : GetAsyncKeyState

Group: Keyboard Input - Library: user32

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The GetAsyncKeyState function determines whether a key is up or down at the time the function is called, and whether the key was pressed after a previous call to GetAsyncKeyState.

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Code examples:

Reading the state of mouse buttons within DO WHILE loop
GDI+: Implementing image scrolling with inertia

Declaration:

SHORT GetAsyncKeyState(
  int vKey   // virtual-key code
);  

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FoxPro declaration:

DECLARE INTEGER GetAsyncKeyState IN user32;
	INTEGER vKey  

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Parameters:

vKey [in] Specifies one of 256 possible virtual-key codes.

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Return value:

If the function succeeds, the return value specifies whether the key was pressed since the last call to GetAsyncKeyState, and whether the key is currently up or down.

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Comments:

Check list of Virtual-Key Codes on the MSDN.

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