int = GetAsyncKeyState(key)

Retrieves the status of the specified key.


key : int

Specifies one of 256 possible virtual-key codes.


An application can use the virtual-key code constants win32con.VK_SHIFT, win32con.VK_CONTROL, and win32con.VK_MENU as values for the key parameter. This gives the state of the SHIFT, CTRL, or ALT keys without distinguishing between left and right. An application can also use the following virtual-key code constants as values for key to distinguish between the left and right instances of those keys:
The GetAsyncKeyState method works with mouse buttons. However, it checks on the state of the physical mouse buttons, not on the logical mouse buttons that the physical buttons are mapped to.

Win32 API References

Search for GetAsyncKeyState at msdn, google or google groups.

Return Value

The return value specifies whether the key was pressed since the last call to GetAsyncKeyState, and whether the key is currently up or down. If the most significant bit is set, the key is down, and if the least significant bit is set, the key was pressed after the previous call to GetAsyncKeyState.
The return value is zero if a window in another thread or process currently has the keyboard focus.