BKM QUERYPAGEDATA

This message queries the 4 bytes of application reserved storage associated with the specified page.

Syntax

param1
ULONG ulPageId;   /* Page ID. */

param2
ULONG ulReserved; /* Reserved value, should be 0. */

ulPageId (ULONG) - Input: The page identifier of the page from which to retrieve the 4 bytes of data.
ulReserved (ULONG) - Input: Reserved value, should be 0.

ulPageData (ULONG) - returns

Application-defined page data:

BOOKERR_INVALID_PARAMETERS: An invalid page ID was specified for the ulPageId parameter.

0: No page data was set for the page specified in the ulPageId parameter.

Other: Application-defined page data.

This data is set by using the BKM_SETPAGEDATA message.

The default window procedure does not expect to receive this message and therefore takes no action on it other than to return 0.