Re: wxGrid with single row selection

Il 29/08/2023 02:44, Kenneth Porter ha scritto:
> Is there a way to disable multiple selection and use wxGrid to choose a 
> single row?
> 
> I found this discussion on ways to override wxGrid's mouse event 
> handlers. Is there a better way?
> 
> https://stackoverflow.com/questions/9378977/how-to-disable-multi-selection-in-a-wxgrid
> 

I did it many years ago for a large program still in use.
I don't remember how I solved the problem, but looking at the source 
code it looks like I handled the wxEVT_GRID_RANGE_SELECT event.

here is the code:

void fsDataGridRO::OnRangeSelect( wxGridRangeSelectEvent& event )
{
     event.Skip();

     if( m_MultiRowSelect ) {
         return;
     }

     if( event.Selecting() && (event.GetTopRow() == 
event.GetBottomRow()) ) {
         // here if a row is selected: move the cursor to the same row
         if( !m_InSingleLineSelect ) {
             m_InSingleLineSelect = true;
             if( (GetGridCursorRow() >= 0) && (GetGridCursorRow() != 
event.GetTopRow()) ) {
                 SetGridCursor( event.GetTopRow(), GetGridCursorCol() );
             }
             m_InSingleLineSelect = false;
         }
     }

     if( event.Selecting() && (event.GetTopRow() != 
event.GetBottomRow()) ) {
         if( !m_InRangeSelect ) {
             m_InRangeSelect = true;
             SelectRow( GetGridCursorRow() );
             m_InRangeSelect = false;
         }
     }
}


Note the m_InSingleLineSelect and m_InRangeSelect variables: they are 
class members used to avoid recursion.

Fulvio Senore

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