The PSN_WIZBACK notification message notifies a page that the user has chosen the Back button in a wizard property sheet. This notification message is sent in the form of a WM_NOTIFY message.
PSN_WIZBACK
lpnmhdr = (NMHDR FAR *) lParam;
Parameters
lpnmhdr
Pointer to an NMHDR structure. The hwndFrom member is the handle of the property sheet.
Return Values
Returns -1 to prevent the property sheet from advancing to the previous page.
See Also