virtual BOOL OnStartTracking(ROWCOL nRow, ROWCOL nCol, int nTrackingMode);?
nRow
Specifies the row id.
nCol
Specifies the column id.
nTrackingMode
Specifies the tracking-mode. The mode can be either GX_TRACKWIDTH when the user is dragging column-widths and GX_TRACKHEIGHT when the user is tracking row-heights.
FALSE if tracking is not possible; TRUE if ok.
Overridable method which initializes the tracking-mode.
This method is called when the user has clicked the mouse on a grid line in the header.
You can override this method if you want to avoid tracking the size of a specific row or column. See CGXGridParam::EnableTrackRowHeight and CGXGridParam::EnableTrackColWidth to globally disable tracking.
Control-Factory Specific ->
This method has been implemented using the abstraction mechanism as discussed in the chapter "Reducing the size of your application" in the user's guide. A call to the ImplementUserResizeCells method from within the control factory class' InitializeGridComponents method will make the concrete implementation of this method available to your application.
If no concrete implementation is available this method returns FALSE. No action is performed.
END Control-Factory Specific
This example traces a message when the user starts tracking.
BOOL CDerGridView::OnStartTracking(WORD nRow, WORD nCol, WORD nTrackingMode)
{
String2 sMessage;
Message.LoadString(IDS_TRACKING_START);
((CMainFrame *) (AfxGetApp( )->m_pMainWnd)->SetStatusText(sMessage);
TRACE("User starts Tracking");
return CGridView::OnStartTracking(nRow, nCol, nTrackingMode);
}CGXGridCore::OnMoveTracking CGXGridCore::OnEndTracking CGXGridCore::IsTracking CGXGridParam::EnableTrackColWidth
Class Overview | Class Members