Allows the extension DLL to verify the registration information as entered by the user. You should not perform the actual registration at this point; that should wait until TIXMSG_APPLY_REGISTRATION because the installation process might still be canceled.

If the registration information is invalid the extension DLL should alert the user before returning, unless performing a silent install. Calling TixMessageBox is the recommended method, because it will not display the message box in quiet mode.

Action scheduling

This message is sent by the CheckCustomerInfo standard action; its scheduling depends on the action sequences used by the installer.


Pointer to TixRegistrationInfo record with the fields set by a prior TIXMSG_INIT_REGISTRATION call.

Result code

If this message is handled, pMessage->lResult must be set to one of the following result codes: