# Keyword Reference

# $tagNMTCKEYDOWN

Contains information about a key press in a tab control. It is used with the $TCN_KEYDOWN notification code

Global Const $tagNMTCKEYDOWN = $tagNMHDR & ";word VKey;uint Flags"

## Parameters

$tagNMHDR | Contains information about a notification message
VKey | Virtual key code
Flags | Bits as shown in the following table: 0-15 - Specifies the repeat count for the current message. 16-23 - Specifies the scan code. The value depends on the OEM. 24 - Specifies whether the key is an extended key, such as the right-hand ALT and CTRL keys that appear on an enhanced 101- or 102-key keyboard. The value is 1 if it is an extended key; otherwise, it is 0. 25-28 - Reserved; do not use. 29 - Specifies the context code. The value is always 0 for a $WM_KEYDOWN message. 30 - Specifies the previous key state. The value is 1 if the key is down before the message is sent, or it is zero if the key is up. 31 - Specifies the transition state. The value is always zero for a $WM_KEYDOWN message