SAM_CacheFull is sent to a table window when needs to fetch a row from the data source but the table window cache is full and none of its rows qualify as discardable. If the table window has a non-discardable cache, SAM_CacheFull indicates that no more data can fit in the table window cache. If the table window has a discardable cache, SAM_CacheFull indicates that the cache is full of data that you modified and must now save. Once you save the modified rows, they qualify as discardable. Message Variables hWndForm Handle of the table window. hWndItem None. wParam Unused. IParam Unused. Example Table Window: twTabWinEmployee Title: Employees ... Message Actions On SAM_CacheFull Call SalMessageBox ( "Please save changes to table window!, "Customer List", MB_Ok | MB_IconStop ) Return FALSE

public const int SAM_CacheFull