Value Meaning; HC_ACTION 0: The wParam and lParam parameters contain information about a keystroke message. HC_NOREMOVE 3: The wParam and lParam parameters contain information about a keystroke message, and the keystroke message has not been removed from the message queue. (An application called the PeekMessage function, specifying the PM_NOREMOVE flag.), Value Meaning; HC_ACTION 0: The wParam and lParam parameters contain information about a mouse message. HC_NOREMOVE 3: The wParam and lParam parameters contain information about a mouse message, and the mouse message has not been removed from the message queue. (An application called the PeekMessage function, specifying the PM_NOREMOVE flag.), ‘ ‘If the hook procedure processed the message, ‘it may return a nonzero value to prevent the ‘system from passing the message to the rest ‘of the hook chain or the target window procedure. If nCode = HC_ACTION Then ‘nCode specifies a code the hook ‘procedure uses to determine how ‘to process the message. HC_ACTION ‘is the only valid code.
‘ ‘If the hook procedure processed the message, ‘it may return a nonzero value to prevent the ‘system from passing the message to the rest ‘of the hook chain or the target window procedure. ‘nCode specifies a code the hook ‘procedure uses to determine how ‘to process the message. HC_ACTION .
hc_action The wParam and lParam parameters contain information about a keyboard message. If nCode is less than zero, the hook procedure must pass the message to the CallNextHookEx function without further processing and should return the value returned by CallNextHookEx .
5/15/2008 · Value Explanation; HC_ACTION : 0: wParam and lParam contain information about mouse messages that have been removed from the message queue. HC_NOREMOVE: 3: wParam and LParam contain information about mouse messages that have been …
