An application sends a ZGM_UNLOCK message to authenticate the users ZeeGrid development license.
ZGM_UNLOCK
wParam = 0; //not used; must be zero
lParam = (LPARAM)(int) iUnlockCode; //license authentication code
This message does not return a value.
This message only needs to be sent once per application instance.
Failure to send the ZGM_UNLOCK message will cause the ZeeGrid to operate in the unlicensed evaluation mode.The ZGM_UNLOCK message should be sent to the first ZeeGrid window created in your application. This message should be sent before the ZeeGrid is displayed.
Obviously, since ZeeGrid is now released freely, this message no longer does anything and is obsolete.