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Objective Grid: Preventing the user from selecting multiple rows

Article ID: 705
Last updated: 11 Jun, 2018
Revision: 2
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Views: 2610
Posted: 23 Jan, 2001
by Meltreger B.
Updated: 11 Jun, 2018
by Meltreger B.

Problem

How can I prevent the user from selecting more than one row at a time?

Cause

Action

There are several alternatives:

  1. Turn off the grid selection mechanism (call EnableSelection()).  Add a handler for mouse clicks yourself (OnLButtonClickedRowCol()) and then call SelectRange() to select the one row.
  2. Another solution is to override CanChangeSelection() as follows:

BOOL CMyGrid::CanChangeSelection(CGXRange* pRange, BOOL bIsDragging, BOOL bKey)
{
if (pRange != NULL && pRange->GetHeight() > 1)
return FALSE;
return CGXGridCore::CanChangeSelection(pRange, bIsDragging, bKey);
}

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