# Keyword Reference

# $tagKBDLLHOOKSTRUCT

Contains information about a low-level keyboard input event

Global Const $tagKBDLLHOOKSTRUCT = "dword vkCode;dword scanCode;dword flags;dword time;ulong_ptr dwExtraInfo"

## Parameters

vkCode | Specifies a virtual-key code. The code must be a value in the range 1 to 254
scanCode | Specifies a hardware scan code for the key
flags | Specifies the extended-key flag, event-injected flag, context code, and transition-state flag. This member is specified as follows. An application can use the following values to test the keystroke flags: $LLKHF_EXTENDED - Test the extended-key flag $LLKHF_LOWER_IL_INJECTED - Test the event-injected (from a process running at lower integrity level) flag $LLKHF_INJECTED - Test the event-injected flag $LLKHF_ALTDOWN - Test the context code $LLKHF_UP - Test the transition-state flag 0 - Specifies whether the key is an extended key, such as a function key or a key on the numeric keypad The value is 1 if the key is an extended key; otherwise, it is 0 1 - Specifies whether the event was injected from a process running at lower integrity level. The value is 1 if that is the case; otherwise, it is 0. Note that bit 4 is also set whenever bit 1 is set. 2 to 3 - Reserved 4 - Specifies whether the event was injected. The value is 1 if the event was injected; otherwise, it is 0. Note that bit 1 is not necessarily set when bit 4 is set. 5 - Specifies the context code. The value is 1 if the ALT key is pressed; otherwise, it is 0 6 - Reserved 7 - Specifies the transition state. The value is 0 if the key is pressed and 1 if it is being released
time | Specifies the time stamp for this message, equivalent to what GetMessageTime would return for this message
dwExtraInfo | Specifies extra information associated with the message