virtual void OnFlushBlobValue(ROWCOL nRow, ROWCOL nCol, CGXAbstractBlob* pAttribute);
nRow
The row being flushed
nCol
The column being flushed
pAttribute
The blob attribute (Explained below)
With normal fields the grid internal current row cache is represented as a string With blobs this is not possible. We therefore have a user attribute pointer that can be used to store any meaningful data. This data is then sent to OnFlushBlobValue.
If your browser variant supports storing blob data you will have to override this method and store the data in the data source. If this method is called for a particular row, col to store an object then OnFlushCellValue will not be called.
If you cannot write the passed value to the data source, you may throw an exception and specify the text to be displayed in the grid with SetWarningText (see the attached example). The default implementation does not do anything.
When overriding this method, it is strongly recommended that you dereference the record and field index associated with a row or column by calling the GetRecordFromRow or GetFieldFromCol methods.
OnFlushBlobValue is not called when the user changes the current cell in the current record (unlike StoreStyleRowCol). It is called when the user wants to move to a new record and therefore validation in OnFlushBlobValue happens only at record level.
CGXBrowserGrid::OnFlushCellValue CGXBrowserGrid::OnFlushRecord
Class Overview | Class Members