missing commit

[wxWidgets.git] / src / generic / gridsel.cpp

diff --git a/src/generic/gridsel.cpp b/src/generic/gridsel.cpp
index f8dd6cb3d58355c10cb620da82440f0128e81d14..bf449f7c4280462f7eafa6f5e9805080d9542c69 100644 (file)
--- a/src/generic/gridsel.cpp
+++ b/src/generic/gridsel.cpp
@@ -1,14 +1,21 @@
 ///////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////

-// Name:        generic/gridsel.cpp
+// Name:        src/generic/gridsel.cpp

 // Purpose:     wxGridSelection
 // Author:      Stefan Neis
 // Modified by:
 // Created:     20/02/1999
 // Purpose:     wxGridSelection
 // Author:      Stefan Neis
 // Modified by:
 // Created:     20/02/1999

-// RCS-ID:      $$
+// RCS-ID:      $Id$

 // Copyright:   (c) Stefan Neis (Stefan.Neis@t-online.de)
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Copyright:   (c) Stefan Neis (Stefan.Neis@t-online.de)
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+

 // ============================================================================
 // declarations
 // ============================================================================
 // ============================================================================
 // declarations
 // ============================================================================


@@ -17,23 +24,22 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "gridsel.h"
-#endif
-
-// For compilers that support precompilation, includes "wx/wx.h".
-#include "wx/wxprec.h"
+#if wxUSE_GRID

 
 

-#include "wx/defs.h"
+#include "wx/generic/gridsel.h"

 
 

-#ifdef __BORLANDC__
-    #pragma hdrstop
-#endif

 
 

-#include "wx/generic/gridsel.h"
+// Some explanation for the members of the class:
+// m_cellSelection stores individual selected cells
+//   -- this is only used if m_selectionMode == wxGridSelectCells
+// m_blockSelectionTopLeft and m_blockSelectionBottomRight
+//   store the upper left and lower right corner of selected Blocks
+// m_rowSelection and m_colSelection store individual selected
+//   rows and columns; maybe those are superfluous and should be
+//   treated as blocks?

 
 wxGridSelection::wxGridSelection( wxGrid * grid,
 
 wxGridSelection::wxGridSelection( wxGrid * grid,

-                                 wxGridSelection::wxGridSelectionModes sel )
+                                  wxGrid::wxGridSelectionModes sel )

 {
     m_grid = grid;
     m_selectionMode = sel;
 {
     m_grid = grid;
     m_selectionMode = sel;


@@ -42,485 +48,961 @@ wxGridSelection::wxGridSelection( wxGrid * grid,
 bool wxGridSelection::IsSelection()
 {
   return ( m_cellSelection.GetCount() || m_blockSelectionTopLeft.GetCount() ||
 bool wxGridSelection::IsSelection()
 {
   return ( m_cellSelection.GetCount() || m_blockSelectionTopLeft.GetCount() ||

-          m_rowSelection.GetCount() || m_colSelection.GetCount() );
+           m_rowSelection.GetCount() || m_colSelection.GetCount() );

 }
 
 }
 

-bool wxGridSelection::IsInSelection ( int row, int col )
+bool wxGridSelection::IsInSelection( int row, int col )

 {
 {

-  size_t count;
-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows &&
-        m_selectionMode != wxGridSelection::wxGridSelectColumns )
+    size_t count;
+
+    // First check whether the given cell is individually selected
+    // (if m_selectionMode is wxGridSelectCells).
+    if ( m_selectionMode == wxGrid::wxGridSelectCells )

     {
         count = m_cellSelection.GetCount();
     {
         count = m_cellSelection.GetCount();

-       for ( size_t n = 0; n < count; n++ )
-       {
-           wxGridCellCoords& coords = m_cellSelection[n];
-           if ( row == coords.GetRow() && col == coords.GetCol() )
-               return true;
-       }
+        for ( size_t n = 0; n < count; n++ )
+        {
+            wxGridCellCoords& coords = m_cellSelection[n];
+            if ( row == coords.GetRow() && col == coords.GetCol() )
+                return true;
+        }

     }
     }

+
+    // Now check whether the given cell is
+    // contained in one of the selected blocks.

     count = m_blockSelectionTopLeft.GetCount();
     for ( size_t n = 0; n < count; n++ )
     {
     count = m_blockSelectionTopLeft.GetCount();
     for ( size_t n = 0; n < count; n++ )
     {

-       wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
-       wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
-       if ( BlockContainsCell(coords1.GetRow(), coords1.GetCol(),
-                              coords2.GetRow(), coords2.GetCol(),
-                              row, col ) )
-           return true;
+        wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
+        wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
+        if ( BlockContainsCell(coords1.GetRow(), coords1.GetCol(),
+                               coords2.GetRow(), coords2.GetCol(),
+                               row, col ) )
+            return true;

     }
     }

-    if ( m_selectionMode != wxGridSelection::wxGridSelectColumns )
+
+    // Now check whether the given cell is
+    // contained in one of the selected rows
+    // (unless we are in column selection mode).
+    if ( m_selectionMode != wxGrid::wxGridSelectColumns )

     {
     {

-       size_t count = m_rowSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           if ( row == m_rowSelection[n] )
-             return true;
-       }
+        count = m_rowSelection.GetCount();
+        for ( size_t n = 0; n < count; n++ )
+        {
+            if ( row == m_rowSelection[n] )
+              return true;
+        }

     }
     }

-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows )
+
+    // Now check whether the given cell is
+    // contained in one of the selected columns
+    // (unless we are in row selection mode).
+    if ( m_selectionMode != wxGrid::wxGridSelectRows )

     {
     {

-       size_t count = m_colSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           if ( col == m_colSelection[n] )
-             return true;
-       }
+        count = m_colSelection.GetCount();
+        for ( size_t n = 0; n < count; n++ )
+        {
+            if ( col == m_colSelection[n] )
+              return true;
+        }

     }
     }

+

     return false;
 }
 
     return false;
 }
 

-void wxGridSelection::SelectRow( int row, bool addToSelected = FALSE )
+// Change the selection mode
+void wxGridSelection::SetSelectionMode( wxGrid::wxGridSelectionModes selmode )

 {
 {

-    if ( m_selectionMode == wxGridSelection::wxGridSelectColumns )
+    // if selection mode is unchanged return immediately
+    if (selmode == m_selectionMode)

         return;
         return;

-    size_t count;
+
+    if ( m_selectionMode != wxGrid::wxGridSelectCells )
+    {
+        // if changing form row to column selection
+        // or vice versa, clear the selection.
+        if ( selmode != wxGrid::wxGridSelectCells )
+            ClearSelection();
+
+        m_selectionMode = selmode;
+    }
+    else
+    {
+        // if changing from cell selection to something else,
+        // promote selected cells/blocks to whole rows/columns.
+        size_t n;
+        while ( ( n = m_cellSelection.GetCount() ) > 0 )
+        {
+            n--;
+            wxGridCellCoords& coords = m_cellSelection[n];
+            int row = coords.GetRow();
+            int col = coords.GetCol();
+            m_cellSelection.RemoveAt(n);
+            if (selmode == wxGrid::wxGridSelectRows)
+                SelectRow( row );
+            else // selmode == wxGridSelectColumns)
+                SelectCol( col );
+        }
+
+        // Note that m_blockSelectionTopLeft's size may be changing!
+        for (n = 0; n < m_blockSelectionTopLeft.GetCount(); n++)
+        {
+            wxGridCellCoords& coords = m_blockSelectionTopLeft[n];
+            int topRow = coords.GetRow();
+            int leftCol = coords.GetCol();
+            coords = m_blockSelectionBottomRight[n];
+            int bottomRow = coords.GetRow();
+            int rightCol = coords.GetCol();
+
+            if (selmode == wxGrid::wxGridSelectRows)
+            {
+                if (leftCol != 0 || rightCol != m_grid->GetNumberCols() - 1 )
+                {
+                    m_blockSelectionTopLeft.RemoveAt(n);
+                    m_blockSelectionBottomRight.RemoveAt(n);
+                    SelectBlockNoEvent( topRow, 0,
+                                 bottomRow, m_grid->GetNumberCols() - 1);
+                }
+            }
+            else // selmode == wxGridSelectColumns)
+            {
+                if (topRow != 0 || bottomRow != m_grid->GetNumberRows() - 1 )
+                {
+                    m_blockSelectionTopLeft.RemoveAt(n);
+                    m_blockSelectionBottomRight.RemoveAt(n);
+                    SelectBlockNoEvent(0, leftCol,
+                                 m_grid->GetNumberRows() - 1, rightCol);
+                }
+            }
+        }
+
+        m_selectionMode = selmode;
+    }
+}
+
+void wxGridSelection::SelectRow(int row, const wxKeyboardState& kbd)
+{
+    if ( m_selectionMode == wxGrid::wxGridSelectColumns )
+        return;
+
+    size_t count, n;

 
     // Remove single cells contained in newly selected block.
 
     // Remove single cells contained in newly selected block.

-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows &&
-        m_selectionMode != wxGridSelection::wxGridSelectColumns )
+    if ( m_selectionMode == wxGrid::wxGridSelectCells )

     {
         count = m_cellSelection.GetCount();
     {
         count = m_cellSelection.GetCount();

-       for ( size_t n = 0; n < count; n++ )
-       {
-           wxGridCellCoords& coords = m_cellSelection[n];
-           if ( BlockContainsCell( row, 0, row, m_grid->GetNumberCols() - 1,
-                                   coords.GetRow(), coords.GetCol() ) )
-           {
-               m_cellSelection.RemoveAt(n);
-               n--; count--;
-           }
-       }
-    }
-
-    // If possible, merge row with existing selected block
+        for ( n = 0; n < count; n++ )
+        {
+            wxGridCellCoords& coords = m_cellSelection[n];
+            if ( BlockContainsCell( row, 0, row, m_grid->GetNumberCols() - 1,
+                                    coords.GetRow(), coords.GetCol() ) )
+            {
+                m_cellSelection.RemoveAt(n);
+                n--;
+                count--;
+            }
+        }
+    }
+
+    // Simplify list of selected blocks (if possible)

     count = m_blockSelectionTopLeft.GetCount();
     count = m_blockSelectionTopLeft.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    bool done = false;
+
+    for ( n = 0; n < count; n++ )

     {
     {

-       wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
-       wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
-       if ( coords1.GetRow() == row && row == coords2.GetRow() )
-       {
-           m_blockSelectionTopLeft.RemoveAt(n);
-           m_blockSelectionBottomRight.RemoveAt(n);
-           n--; count--;
-       }
-       else if ( coords1.GetCol() == 0  &&
-                 coords2.GetCol() == m_grid->GetNumberCols() - 1 )
-       {
-           if ( coords1.GetRow() <= row && row <= coords2.GetRow() )
-               return;
-           else if ( coords1.GetRow() == row + 1)
-           {
-               coords1.SetRow(row);
-               return;
-           }
-           else if ( coords2.GetRow() == row - 1)
-           {
-               coords2.SetRow(row);
-               return;
-           }           
-       }
-    }
-
-    // Check whether row is already selected.
-    count = m_rowSelection.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+        wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
+        wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
+
+        // Remove block if it is a subset of the row
+        if ( coords1.GetRow() == row && row == coords2.GetRow() )
+        {
+            m_blockSelectionTopLeft.RemoveAt(n);
+            m_blockSelectionBottomRight.RemoveAt(n);
+            n--;
+            count--;
+        }
+        else if ( coords1.GetCol() == 0  &&
+                  coords2.GetCol() == m_grid->GetNumberCols() - 1 )
+        {
+            // silently return, if row is contained in block
+            if ( coords1.GetRow() <= row && row <= coords2.GetRow() )
+                return;
+            // expand block, if it touched row
+            else if ( coords1.GetRow() == row + 1)
+            {
+                coords1.SetRow(row);
+                done = true;
+            }
+            else if ( coords2.GetRow() == row - 1)
+            {
+                coords2.SetRow(row);
+                done = true;
+            }
+        }
+    }
+
+    // Unless we successfully handled the row,
+    // check whether row is already selected.
+    if ( !done )

     {
     {

-        if ( row == m_rowSelection[n] )
-           return;
+        count = m_rowSelection.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            if ( row == m_rowSelection[n] )
+                return;
+        }
+
+        // Add row to selection
+        m_rowSelection.Add(row);

     }
 
     }
 

-    // Add row to selection
-    m_rowSelection.Add(row);
+    // Update View:
+    if ( !m_grid->GetBatchCount() )
+    {
+        wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
+                                              wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
+        ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+    }
+
+    // Send Event
+    wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+                                    wxEVT_GRID_RANGE_SELECT,
+                                    m_grid,
+                                    wxGridCellCoords( row, 0 ),
+                                    wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
+                                    true,
+                                    kbd);
+
+    m_grid->GetEventHandler()->ProcessEvent( gridEvt );

 }
 
 }
 

-void wxGridSelection::SelectCol( int col, bool addToSelected = FALSE )
+void wxGridSelection::SelectCol(int col, const wxKeyboardState& kbd)

 {
 {

-    if ( m_selectionMode == wxGridSelection::wxGridSelectRows )
+    if ( m_selectionMode == wxGrid::wxGridSelectRows )

         return;
         return;

-    size_t count;
+    size_t count, n;

 
     // Remove single cells contained in newly selected block.
 
     // Remove single cells contained in newly selected block.

-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows &&
-        m_selectionMode != wxGridSelection::wxGridSelectColumns )
+    if ( m_selectionMode == wxGrid::wxGridSelectCells )

     {
         count = m_cellSelection.GetCount();
     {
         count = m_cellSelection.GetCount();

-       for ( size_t n = 0; n < count; n++ )
-       {
-           wxGridCellCoords& coords = m_cellSelection[n];
-           if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
-                                   coords.GetRow(), coords.GetCol() ) )
-           {
-               m_cellSelection.RemoveAt(n);
-               n--; count--;
-           }
-       }
-    }
-
-    // If possible, merge col with existing selected block
+        for ( n = 0; n < count; n++ )
+        {
+            wxGridCellCoords& coords = m_cellSelection[n];
+            if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
+                                    coords.GetRow(), coords.GetCol() ) )
+            {
+                m_cellSelection.RemoveAt(n);
+                n--;
+                count--;
+            }
+        }
+    }
+
+    // Simplify list of selected blocks (if possible)

     count = m_blockSelectionTopLeft.GetCount();
     count = m_blockSelectionTopLeft.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    bool done = false;
+    for ( n = 0; n < count; n++ )

     {
     {

-       wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
-       wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
-       if ( coords1.GetCol() == col && col == coords2.GetCol() )
-       {
-           m_blockSelectionTopLeft.RemoveAt(n);
-           m_blockSelectionBottomRight.RemoveAt(n);
-           n--; count--;
-       }
-       else if ( coords1.GetRow() == 0  &&
-                 coords2.GetRow() == m_grid->GetNumberRows() - 1 )
-       {
-           if ( coords1.GetCol() <= col && col <= coords2.GetCol() )
-               return;
-           else if ( coords1.GetCol() == col + 1)
-           {
-               coords1.SetCol(col);
-               return;
-           }
-           else if ( coords2.GetCol() == col - 1)
-           {
-               coords2.SetCol(col);
-               return;
-           }           
-       }
+        wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
+        wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
+
+        // Remove block if it is a subset of the column
+        if ( coords1.GetCol() == col && col == coords2.GetCol() )
+        {
+            m_blockSelectionTopLeft.RemoveAt(n);
+            m_blockSelectionBottomRight.RemoveAt(n);
+            n--;
+            count--;
+        }
+        else if ( coords1.GetRow() == 0  &&
+                  coords2.GetRow() == m_grid->GetNumberRows() - 1 )
+        {
+            // silently return, if row is contained in block
+            if ( coords1.GetCol() <= col && col <= coords2.GetCol() )
+                return;
+            // expand block, if it touched col
+            else if ( coords1.GetCol() == col + 1)
+            {
+                coords1.SetCol(col);
+                done = true;
+            }
+            else if ( coords2.GetCol() == col - 1)
+            {
+                coords2.SetCol(col);
+                done = true;
+            }
+        }

     }
 
     }
 

+    // Unless we successfully handled the column,

     // Check whether col is already selected.
     // Check whether col is already selected.

-    count = m_colSelection.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+    if ( !done )
+    {
+        count = m_colSelection.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            if ( col == m_colSelection[n] )
+                return;
+        }
+
+        // Add col to selection
+        m_colSelection.Add(col);
+    }
+
+    // Update View:
+    if ( !m_grid->GetBatchCount() )

     {
     {

-        if ( col == m_colSelection[n] )
-           return;
+        wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
+                                              wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
+        ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );

     }
 
     }
 

-    // Add col to selection
-    m_colSelection.Add(col);
+    // Send Event
+    wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+                                    wxEVT_GRID_RANGE_SELECT,
+                                    m_grid,
+                                    wxGridCellCoords( 0, col ),
+                                    wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
+                                    true,
+                                    kbd );
+
+    m_grid->GetEventHandler()->ProcessEvent( gridEvt );

 }
 
 }
 

-void wxGridSelection::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol )
+void wxGridSelection::SelectBlock( int topRow, int leftCol,
+                                   int bottomRow, int rightCol,
+                                   const wxKeyboardState& kbd,
+                                   bool sendEvent )

 {
 {

-    // Fix the coordinates of the block if potentially needed
-    if ( m_selectionMode == wxGridSelection::wxGridSelectRows )
+    // Fix the coordinates of the block if needed.
+    switch ( m_selectionMode )
+    {
+        default:
+            wxFAIL_MSG( "unknown selection mode" );
+            // fall through
+
+        case wxGrid::wxGridSelectCells:
+            // nothing to do -- in this mode arbitrary blocks can be selected
+            break;
+
+        case wxGrid::wxGridSelectRows:
+            leftCol = 0;
+            rightCol = m_grid->GetNumberCols() - 1;
+            break;
+
+        case wxGrid::wxGridSelectColumns:
+            topRow = 0;
+            bottomRow = m_grid->GetNumberRows() - 1;
+            break;
+
+        case wxGrid::wxGridSelectRowsOrColumns:
+            // block selection doesn't make sense for this mode, we could only
+            // select the entire grid but this wouldn't be useful
+            return;
+    }
+
+    if ( topRow > bottomRow )

     {
     {

-       leftCol = 0;
-       rightCol = m_grid->GetNumberCols() - 1;
+        int temp = topRow;
+        topRow = bottomRow;
+        bottomRow = temp;

     }
     }

-    else if ( m_selectionMode == wxGridSelection::wxGridSelectColumns )
+
+    if ( leftCol > rightCol )

     {
     {

-       topRow = 0;
-       bottomRow = m_grid->GetNumberRows() - 1;
+        int temp = leftCol;
+        leftCol = rightCol;
+        rightCol = temp;

     }
 
     // Handle single cell selection in SelectCell.
     }
 
     // Handle single cell selection in SelectCell.

-    if ( topRow == bottomRow && leftCol == rightCol )
-        SelectCell( topRow, leftCol );
+    // (MB: added check for selection mode here to prevent
+    //  crashes if, for example, we are select rows and the
+    //  grid only has 1 col)
+    if ( m_selectionMode == wxGrid::wxGridSelectCells &&
+         topRow == bottomRow && leftCol == rightCol )
+    {
+        SelectCell( topRow, leftCol, kbd, sendEvent );
+    }

 
 

-    size_t count;
-    // Remove single cells contained in newly selected block.
-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows &&
-        m_selectionMode != wxGridSelection::wxGridSelectColumns )
+    size_t count, n;
+
+    if ( m_selectionMode == wxGrid::wxGridSelectRows )

     {
     {

-        count = m_cellSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           wxGridCellCoords& coords = m_cellSelection[n];
-           if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
-                                   coords.GetRow(), coords.GetCol() ) )
-           {
-               m_cellSelection.RemoveAt(n);
-               n--; count--;
-           }
-       }
+        // find out which rows are already selected:
+        wxArrayInt alreadyselected;
+        alreadyselected.Add(0,bottomRow-topRow+1);
+        for( n = 0; n < m_rowSelection.GetCount(); n++)
+        {
+            int row = m_rowSelection[n];
+            if( (row >= topRow) && (row <= bottomRow) )
+            {
+                alreadyselected[ row - topRow ]=1;
+            }
+        }
+
+        // add the newly selected rows:
+        for ( int row = topRow; row <= bottomRow; row++ )
+        {
+            if ( alreadyselected[ row - topRow ] == 0 )
+            {
+                m_rowSelection.Add( row );
+            }
+        }

     }
     }

+    else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
+    {
+        // find out which columns are already selected:
+        wxArrayInt alreadyselected;
+        alreadyselected.Add(0,rightCol-leftCol+1);
+        for( n = 0; n < m_colSelection.GetCount(); n++)
+        {
+            int col = m_colSelection[n];
+            if( (col >= leftCol) && (col <= rightCol) )
+            {
+                alreadyselected[ col - leftCol ]=1;
+            }
+        }

 
 

-    // If a block containing the selection is already selected, return,
-    // if a block contained in the selection is found, remove it.
+        // add the newly selected columns:
+        for ( int col = leftCol; col <= rightCol; col++ )
+        {
+            if ( alreadyselected[ col - leftCol ] == 0 )
+            {
+                m_colSelection.Add( col );
+            }
+        }
+    }
+    else
+    {
+        // Remove single cells contained in newly selected block.
+        if ( m_selectionMode == wxGrid::wxGridSelectCells )
+        {
+            count = m_cellSelection.GetCount();
+            for ( n = 0; n < count; n++ )
+            {
+                wxGridCellCoords& coords = m_cellSelection[n];
+                if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
+                                        coords.GetRow(), coords.GetCol() ) )
+                {
+                    m_cellSelection.RemoveAt(n);
+                    n--;
+                    count--;
+                }
+            }
+        }

 
 

-    count = m_blockSelectionTopLeft.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+        // If a block containing the selection is already selected, return,
+        // if a block contained in the selection is found, remove it.
+
+        count = m_blockSelectionTopLeft.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
+            wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
+
+            switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
+                                   coords2.GetRow(), coords2.GetCol(),
+                                   topRow, leftCol, bottomRow, rightCol ) )
+            {
+                case 1:
+                    return;
+
+                case -1:
+                    m_blockSelectionTopLeft.RemoveAt(n);
+                    m_blockSelectionBottomRight.RemoveAt(n);
+                    n--;
+                    count--;
+                    break;
+
+                default:
+                    break;
+            }
+        }
+
+        // If a row containing the selection is already selected, return,
+        // if a row contained in newly selected block is found, remove it.
+        count = m_rowSelection.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            switch ( BlockContain( m_rowSelection[n], 0,
+                                   m_rowSelection[n], m_grid->GetNumberCols() - 1,
+                                   topRow, leftCol, bottomRow, rightCol ) )
+            {
+                case 1:
+                    return;
+
+                case -1:
+                    m_rowSelection.RemoveAt(n);
+                    n--;
+                    count--;
+                    break;
+
+                default:
+                    break;
+            }
+        }
+
+        // Same for columns.
+        count = m_colSelection.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            switch ( BlockContain( 0, m_colSelection[n],
+                                   m_grid->GetNumberRows() - 1, m_colSelection[n],
+                                   topRow, leftCol, bottomRow, rightCol ) )
+            {
+                case 1:
+                    return;
+
+                case -1:
+                    m_colSelection.RemoveAt(n);
+                    n--;
+                    count--;
+                    break;
+
+                default:
+                    break;
+            }
+        }
+
+        m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
+        m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
+    }
+    // Update View:
+    if ( !m_grid->GetBatchCount() )
+    {
+        wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
+                                              wxGridCellCoords( bottomRow, rightCol ) );
+        ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+    }
+
+    // Send Event, if not disabled.
+    if ( sendEvent )

     {
     {

-       wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
-       wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
-       switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
-                              coords2.GetRow(), coords2.GetCol(),
-                              topRow, leftCol, bottomRow, rightCol ) )
-       {
-         case 1:
-           return;
-         case -1:
-           m_blockSelectionTopLeft.RemoveAt(n);
-           m_blockSelectionBottomRight.RemoveAt(n);
-           n--; count--;
-         default:
-           ;
-       }
-    }
-
-    // If a row containing the selection is already selected, return,
-    // if a row contained in newly selected block is found, remove it.
-    if ( m_selectionMode != wxGridSelection::wxGridSelectColumns )
-    {
-       size_t count = m_rowSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           switch ( BlockContain( m_rowSelection[n], 0,
-                                  m_rowSelection[n], m_grid->GetNumberCols()-1,
-                                  topRow, leftCol, bottomRow, rightCol ) )
-           {
-             case 1:
-               return;
-             case -1:
-               m_rowSelection.RemoveAt(n);
-               n--; count--;
-             default:
-               ;
-           }
-       }
-    }
-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows )
-    {
-       size_t count = m_colSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           switch ( BlockContain( 0, m_colSelection[n],
-                                  m_grid->GetNumberRows()-1, m_colSelection[n], 
-                                  topRow, leftCol, bottomRow, rightCol ) )
-           {
-             case 1:
-               return;
-             case -1:
-               m_colSelection.RemoveAt(n);
-               n--; count--;
-             default:
-               ;
-           }
-       }
-    }
-    m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
-    m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
+        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+            wxEVT_GRID_RANGE_SELECT,
+            m_grid,
+            wxGridCellCoords( topRow, leftCol ),
+            wxGridCellCoords( bottomRow, rightCol ),
+            true,
+            kbd);
+        m_grid->GetEventHandler()->ProcessEvent( gridEvt );
+    }

 }
 
 }
 

-void wxGridSelection::SelectCell( int row, int col)
+void wxGridSelection::SelectCell( int row, int col,
+                                  const wxKeyboardState& kbd,
+                                  bool sendEvent )

 {
 {

-    if ( m_selectionMode == wxGridSelection::wxGridSelectRows )
-        SelectBlock(row, 0, row, m_grid->GetNumberCols() - 1 );
-    else if ( m_selectionMode == wxGridSelection::wxGridSelectColumns )
-        SelectBlock(0, col, m_grid->GetNumberRows() - 1, col );
-    else if ( IsInSelection ( row, col ) )
+    if ( IsInSelection ( row, col ) )

         return;
         return;

-    m_cellSelection.Add( wxGridCellCoords( row, col ) );
+
+    wxGridCellCoords selectedTopLeft, selectedBottomRight;
+    if ( m_selectionMode == wxGrid::wxGridSelectRows )
+    {
+        m_rowSelection.Add( row );
+        selectedTopLeft = wxGridCellCoords( row, 0 );
+        selectedBottomRight = wxGridCellCoords( row, m_grid->GetNumberCols() - 1 );
+    }
+    else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
+    {
+        m_colSelection.Add( col );
+        selectedTopLeft = wxGridCellCoords( 0, col );
+        selectedBottomRight = wxGridCellCoords( m_grid->GetNumberRows() - 1, col );
+    }
+    else
+    {
+        m_cellSelection.Add( wxGridCellCoords( row, col ) );
+        selectedTopLeft = wxGridCellCoords( row, col );
+        selectedBottomRight = wxGridCellCoords( row, col );
+    }
+
+    // Update View:
+    if ( !m_grid->GetBatchCount() )
+    {
+        wxRect r = m_grid->BlockToDeviceRect(
+            selectedTopLeft,
+            selectedBottomRight );
+        ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+    }
+
+    // Send event
+    if (sendEvent)
+    {
+        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+            wxEVT_GRID_RANGE_SELECT,
+            m_grid,
+            selectedTopLeft,
+            selectedBottomRight,
+            true,
+            kbd);
+        m_grid->GetEventHandler()->ProcessEvent( gridEvt );
+    }

 }
 
 }
 

-void wxGridSelection::ToggleCellSelection( int row, int col)
+void
+wxGridSelection::ToggleCellSelection(int row, int col,
+                                     const wxKeyboardState& kbd)

 {
 {

+    // if the cell is not selected, select it

     if ( !IsInSelection ( row, col ) )
     if ( !IsInSelection ( row, col ) )

-        SelectCell( row, col );
-    size_t count;
+    {
+        SelectCell(row, col, kbd);
+
+        return;
+    }
+
+    // otherwise deselect it. This can be simple or more or
+    // less difficult, depending on how the cell is selected.
+    size_t count, n;

 
 

-    // Maybe we want to toggle a member of m_cellSelection.
-    // Then it can't be contained in rows/cols/block, and we
-    // just have to remove it from m_cellSelection.
+    // The simplest case: The cell is contained in m_cellSelection
+    // Then it can't be contained in rows/cols/block (since those
+    // would remove the cell from m_cellSelection on creation), so
+    // we just have to remove it from m_cellSelection.

 
 

-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows &&
-        m_selectionMode != wxGridSelection::wxGridSelectColumns )
+    if ( m_selectionMode == wxGrid::wxGridSelectCells )

     {
         count = m_cellSelection.GetCount();
     {
         count = m_cellSelection.GetCount();

-       for ( size_t n = 0; n < count; n++ )
-       {
-           wxGridCellCoords& coords = m_cellSelection[n];
-           if ( row == coords.GetRow() && col == coords.GetCol() )
-           {
-               m_cellSelection.RemoveAt(n);
-               n--; count--;
-               wxRect r;
-               r = m_grid->BlockToDeviceRect( m_cellSelection[n],
-                                              m_cellSelection[n] );
-               if ( !m_grid->GetBatchCount() )
-                   ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
-               return;
-           }
-       }
-    }
-
-    // remove a cell from the middle of a block (the really ugly case)
+        for ( n = 0; n < count; n++ )
+        {
+            const wxGridCellCoords& sel = m_cellSelection[n];
+            if ( row == sel.GetRow() && col == sel.GetCol() )
+            {
+                wxGridCellCoords coords = m_cellSelection[n];
+                m_cellSelection.RemoveAt(n);
+                if ( !m_grid->GetBatchCount() )
+                {
+                    wxRect r = m_grid->BlockToDeviceRect( coords, coords );
+                    ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+                }
+
+                // Send event
+                wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+                                                wxEVT_GRID_RANGE_SELECT,
+                                                m_grid,
+                                                wxGridCellCoords( row, col ),
+                                                wxGridCellCoords( row, col ),
+                                                false,
+                                                kbd );
+                m_grid->GetEventHandler()->ProcessEvent( gridEvt );
+
+                return;
+            }
+        }
+    }
+
+    // The most difficult case: The cell is member of one or even several
+    // blocks. Split each such block in up to 4 new parts, that don't
+    // contain the cell to be selected, like this:
+    // |---------------------------|
+    // |                           |
+    // |           part 1          |
+    // |                           |
+    // |---------------------------|
+    // |   part 3   |x|   part 4   |
+    // |---------------------------|
+    // |                           |
+    // |           part 2          |
+    // |                           |
+    // |---------------------------|
+    //   (The x marks the newly deselected cell).
+    // Note: in row selection mode, we only need part1 and part2;
+    //       in column selection mode, we only need part 3 and part4,
+    //          which are expanded to whole columns automatically!
+

     count = m_blockSelectionTopLeft.GetCount();
     count = m_blockSelectionTopLeft.GetCount();

-    for ( size_t n = 0; n < count; n++ )
-      {
-       wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
-       wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
-       int topRow = coords1.GetRow();
-       int leftCol = coords1.GetCol();
-       int bottomRow = coords2.GetRow();
-       int rightCol = coords2.GetCol();
-       if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
-                               row, col ) )
-       {
-           // remove the block
-           m_blockSelectionTopLeft.RemoveAt(n);
-           m_blockSelectionBottomRight.RemoveAt(n);
-           n--; count--;
-           // add up to 4 smaller blocks and set update region
-           if ( m_selectionMode != wxGridSelection::wxGridSelectColumns )
-           {
-               if ( topRow < row )
-                   SelectBlock( topRow, leftCol, row - 1, rightCol );
-               if ( bottomRow > row )
-                   SelectBlock( row + 1, leftCol, bottomRow, rightCol );
-           }
-           if ( m_selectionMode != wxGridSelection::wxGridSelectRows )
-           {
-               if ( leftCol < col )
-                   SelectBlock( row, leftCol, row, col - 1 );
-               if ( rightCol > col )
-                   SelectBlock( row, col + 1, row, rightCol );
-           }
-       }
+    for ( n = 0; n < count; n++ )
+    {
+        wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
+        wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
+        int topRow = coords1.GetRow();
+        int leftCol = coords1.GetCol();
+        int bottomRow = coords2.GetRow();
+        int rightCol = coords2.GetCol();
+
+        if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol, row, col ) )
+        {
+            // remove the block
+            m_blockSelectionTopLeft.RemoveAt(n);
+            m_blockSelectionBottomRight.RemoveAt(n);
+            n--;
+            count--;
+
+            // add up to 4 smaller blocks and set update region
+            if ( m_selectionMode != wxGrid::wxGridSelectColumns )
+            {
+                if ( topRow < row )
+                    SelectBlockNoEvent(topRow, leftCol, row - 1, rightCol);
+                if ( bottomRow > row )
+                    SelectBlockNoEvent(row + 1, leftCol, bottomRow, rightCol);
+            }
+
+            if ( m_selectionMode != wxGrid::wxGridSelectRows )
+            {
+                if ( leftCol < col )
+                    SelectBlockNoEvent(row, leftCol, row, col - 1);
+                if ( rightCol > col )
+                    SelectBlockNoEvent(row, col + 1, row, rightCol);
+            }
+        }

     }
 
     }
 

+    bool rowSelectionWasChanged = false;

     // remove a cell from a row, adding up to two new blocks
     // remove a cell from a row, adding up to two new blocks

-    if ( m_selectionMode != wxGridSelection::wxGridSelectColumns )
-    {
-       size_t count = m_rowSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           if ( m_rowSelection[n] == row )
-           {
-               m_rowSelection.RemoveAt(n);
-               n--; count--;
-               if (m_selectionMode == wxGridSelection::wxGridSelectCells)
-               {
-                   if ( col > 0 )
-                       SelectBlock( row, 0, row, col - 1 );
-                   if ( col < m_grid->GetNumberCols() - 1 )
-                       SelectBlock( row, col + 1, row, m_grid->GetNumberCols() - 1 );
-               }
-           }
-       }
+    if ( m_selectionMode != wxGrid::wxGridSelectColumns )
+    {
+        count = m_rowSelection.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            if ( m_rowSelection[n] == row )
+            {
+                m_rowSelection.RemoveAt(n);
+                n--;
+                count--;
+
+                rowSelectionWasChanged = true;
+
+                if (m_selectionMode == wxGrid::wxGridSelectCells)
+                {
+                    if ( col > 0 )
+                        SelectBlockNoEvent(row, 0, row, col - 1);
+                    if ( col < m_grid->GetNumberCols() - 1 )
+                        SelectBlockNoEvent( row, col + 1,
+                                     row, m_grid->GetNumberCols() - 1);
+                }
+            }
+        }

     }
 
     }
 

+    bool colSelectionWasChanged = false;

     // remove a cell from a column, adding up to two new blocks
     // remove a cell from a column, adding up to two new blocks

-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows )
-    {
-       size_t count = m_colSelection.GetCount();
-       for ( size_t n = 0; n < count; n++ )
-       {
-           if ( m_colSelection[n] == col )
-           {
-               m_colSelection.RemoveAt(n);
-               n--; count--;
-               if (m_selectionMode == wxGridSelection::wxGridSelectCells)
-               {
-                   if ( row > 0 )
-                       SelectBlock( 0, col, row - 1, col );
-                   if ( row < m_grid->GetNumberRows() - 1 )
-                       SelectBlock( row + 1, col, m_grid->GetNumberRows() - 1, col );
-               }
-           }
-       }
+    if ( m_selectionMode != wxGrid::wxGridSelectRows )
+    {
+        count = m_colSelection.GetCount();
+        for ( n = 0; n < count; n++ )
+        {
+            if ( m_colSelection[n] == col )
+            {
+                m_colSelection.RemoveAt(n);
+                n--;
+                count--;
+
+                colSelectionWasChanged = true;
+
+                if (m_selectionMode == wxGrid::wxGridSelectCells)
+                {
+                    if ( row > 0 )
+                        SelectBlockNoEvent(0, col, row - 1, col);
+                    if ( row < m_grid->GetNumberRows() - 1 )
+                        SelectBlockNoEvent(row + 1, col,
+                                     m_grid->GetNumberRows() - 1, col);
+                }
+            }
+        }

     }
     }

+
+    // Refresh the screen and send the event; according to m_selectionMode,
+    // we need to either update only the cell, or the whole row/column.

     wxRect r;
     wxRect r;

-    switch (m_selectionMode)
-    {
-      case wxGridSelection::wxGridSelectCells:
-       r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
-                                      wxGridCellCoords( row, col ) );
-       break;
-      case wxGridSelection::wxGridSelectRows:
-       r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
-                                      wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
-       break;
-      case wxGridSelection::wxGridSelectColumns:
-       r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
-                                      wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
-       break;
+    if ( m_selectionMode == wxGrid::wxGridSelectCells )
+    {
+        if ( !m_grid->GetBatchCount() )
+        {
+            r = m_grid->BlockToDeviceRect(
+                wxGridCellCoords( row, col ),
+                wxGridCellCoords( row, col ) );
+            ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+        }
+
+        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+            wxEVT_GRID_RANGE_SELECT,
+            m_grid,
+            wxGridCellCoords( row, col ),
+            wxGridCellCoords( row, col ),
+            false,
+            kbd );
+        m_grid->GetEventHandler()->ProcessEvent( gridEvt );
+    }
+    else  // rows/columns selection mode
+    {
+        if ( m_selectionMode != wxGrid::wxGridSelectColumns &&
+                rowSelectionWasChanged )
+        {
+            int numCols = m_grid->GetNumberCols();
+            for ( int colFrom = 0, colTo = 0; colTo <= numCols; ++colTo )
+            {
+                if ( m_colSelection.Index(colTo) >= 0 || colTo == numCols )
+                {
+                    if ( colFrom < colTo )
+                    {
+                        if ( !m_grid->GetBatchCount() )
+                        {
+                            r = m_grid->BlockToDeviceRect(
+                                wxGridCellCoords( row, colFrom ),
+                                wxGridCellCoords( row, colTo-1 ) );
+                            ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+                        }
+
+                        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+                            wxEVT_GRID_RANGE_SELECT,
+                            m_grid,
+                            wxGridCellCoords( row, colFrom ),
+                            wxGridCellCoords( row, colTo - 1 ),
+                            false,
+                            kbd );
+                        m_grid->GetEventHandler()->ProcessEvent( gridEvt );
+                    }
+
+                    colFrom = colTo + 1;
+                }
+            }
+        }
+
+        if ( m_selectionMode != wxGrid::wxGridSelectRows &&
+                colSelectionWasChanged )
+        {
+            int numRows = m_grid->GetNumberRows();
+            for ( int rowFrom = 0, rowTo = 0; rowTo <= numRows; ++rowTo )
+            {
+                if ( m_rowSelection.Index(rowTo) >= 0 || rowTo == numRows )
+                {
+                    if (rowFrom < rowTo)
+                    {
+                        if ( !m_grid->GetBatchCount() )
+                        {
+                            r = m_grid->BlockToDeviceRect(
+                                wxGridCellCoords( rowFrom, col ),
+                                wxGridCellCoords( rowTo - 1, col ) );
+                          ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+                        }
+
+                        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+                            wxEVT_GRID_RANGE_SELECT,
+                            m_grid,
+                            wxGridCellCoords( rowFrom, col ),
+                            wxGridCellCoords( rowTo - 1, col ),
+                            false,
+                            kbd );
+                        m_grid->GetEventHandler()->ProcessEvent( gridEvt );
+                    }
+
+                    rowFrom = rowTo + 1;
+                }
+            }
+        }

     }
     }

-    if ( !m_grid->GetBatchCount() )
-        ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );

 }
 
 void wxGridSelection::ClearSelection()
 {
     size_t n;
 }
 
 void wxGridSelection::ClearSelection()
 {
     size_t n;

-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows &&
-        m_selectionMode != wxGridSelection::wxGridSelectColumns )
-    {
-      
-       while( ( n = m_cellSelection.GetCount() ) > 0)
-       {
-           wxRect r;
-           r = m_grid->BlockToDeviceRect( m_cellSelection[n],
-                                          m_cellSelection[n] );
-           m_cellSelection.RemoveAt(n);
-           if ( !m_grid->GetBatchCount() )
-               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
-       }
-    }
-    while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
-    {
-        wxRect r;
-       r = m_grid->BlockToDeviceRect( m_blockSelectionTopLeft[n],
-                                      m_blockSelectionBottomRight[n] );
-       m_blockSelectionTopLeft.RemoveAt(n);
-       m_blockSelectionBottomRight.RemoveAt(n);
-       if ( !m_grid->GetBatchCount() )
-           ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );   
-    }
-    if ( m_selectionMode != wxGridSelection::wxGridSelectColumns )
-    {
-       while( ( n = m_rowSelection.GetCount() ) > 0)
-       {
-           int & row = m_rowSelection[n];
-           wxRect r;
-           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
-                                          wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
-           m_rowSelection.RemoveAt(n);
-           if ( !m_grid->GetBatchCount() )
-               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );   
-       }
-    }
-    if ( m_selectionMode != wxGridSelection::wxGridSelectRows )
-    {
-       while( ( n = m_colSelection.GetCount() ) > 0)
-       {
-           int & col = m_colSelection[n];
-           wxRect r;
-           r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
-                                          wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
-           m_colSelection.RemoveAt(n);
-           if ( !m_grid->GetBatchCount() )
-               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );   
-       }
+    wxRect r;
+    wxGridCellCoords coords1, coords2;
+
+    // deselect all individual cells and update the screen
+    if ( m_selectionMode == wxGrid::wxGridSelectCells )
+    {
+        while ( ( n = m_cellSelection.GetCount() ) > 0)
+        {
+            n--;
+            coords1 = m_cellSelection[n];
+            m_cellSelection.RemoveAt(n);
+            if ( !m_grid->GetBatchCount() )
+            {
+                r = m_grid->BlockToDeviceRect( coords1, coords1 );
+                ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+
+#ifdef __WXMAC__
+                ((wxWindow *)m_grid->m_gridWin)->Update();
+#endif
+            }
+        }
+    }
+
+    // deselect all blocks and update the screen
+    while ( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
+    {
+        n--;
+        coords1 = m_blockSelectionTopLeft[n];
+        coords2 = m_blockSelectionBottomRight[n];
+        m_blockSelectionTopLeft.RemoveAt(n);
+        m_blockSelectionBottomRight.RemoveAt(n);
+        if ( !m_grid->GetBatchCount() )
+        {
+            r = m_grid->BlockToDeviceRect( coords1, coords2 );
+            ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+
+#ifdef __WXMAC__
+            ((wxWindow *)m_grid->m_gridWin)->Update();
+#endif
+        }
+    }
+
+    // deselect all rows and update the screen
+    if ( m_selectionMode != wxGrid::wxGridSelectColumns )
+    {
+        while ( ( n = m_rowSelection.GetCount() ) > 0)
+        {
+            n--;
+            int row = m_rowSelection[n];
+            m_rowSelection.RemoveAt(n);
+            if ( !m_grid->GetBatchCount() )
+            {
+                r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
+                                               wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
+                ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+
+#ifdef __WXMAC__
+                ((wxWindow *)m_grid->m_gridWin)->Update();
+#endif
+            }
+        }

     }
     }

+
+    // deselect all columns and update the screen
+    if ( m_selectionMode != wxGrid::wxGridSelectRows )
+    {
+        while ( ( n = m_colSelection.GetCount() ) > 0)
+        {
+            n--;
+            int col = m_colSelection[n];
+            m_colSelection.RemoveAt(n);
+            if ( !m_grid->GetBatchCount() )
+            {
+                r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
+                                               wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
+                ((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
+
+#ifdef __WXMAC__
+                ((wxWindow *)m_grid->m_gridWin)->Update();
+#endif
+            }
+        }
+    }
+
+    // One deselection event, indicating deselection of _all_ cells.
+    // (No finer grained events for each of the smaller regions
+    //  deselected above!)
+    wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
+                                    wxEVT_GRID_RANGE_SELECT,
+                                    m_grid,
+                                    wxGridCellCoords( 0, 0 ),
+                                    wxGridCellCoords(
+                                        m_grid->GetNumberRows() - 1,
+                                        m_grid->GetNumberCols() - 1 ),
+                                    false );
+
+    m_grid->GetEventHandler()->ProcessEvent(gridEvt);

 }
 
 
 void wxGridSelection::UpdateRows( size_t pos, int numRows )
 {
     size_t count = m_cellSelection.GetCount();
 }
 
 
 void wxGridSelection::UpdateRows( size_t pos, int numRows )
 {
     size_t count = m_cellSelection.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    size_t n;
+    for ( n = 0; n < count; n++ )

     {
         wxGridCellCoords& coords = m_cellSelection[n];
         wxCoord row = coords.GetRow();
     {
         wxGridCellCoords& coords = m_cellSelection[n];
         wxCoord row = coords.GetRow();


@@ -543,27 +1025,29 @@ void wxGridSelection::UpdateRows( size_t pos, int numRows )
                 {
                     // ...or remove the attribute
                     m_cellSelection.RemoveAt(n);
                 {
                     // ...or remove the attribute
                     m_cellSelection.RemoveAt(n);

-                    n--; count--;
+                    n--;
+                    count--;

                 }
             }
         }
     }
 
     count = m_blockSelectionTopLeft.GetCount();
                 }
             }
         }
     }
 
     count = m_blockSelectionTopLeft.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    for ( n = 0; n < count; n++ )

     {
         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
         wxCoord row1 = coords1.GetRow();
         wxCoord row2 = coords2.GetRow();
     {
         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
         wxCoord row1 = coords1.GetRow();
         wxCoord row2 = coords2.GetRow();

+

         if ((size_t)row2 >= pos)
         {
             if (numRows > 0)
             {
                 // If rows inserted, increase row counter where necessary
         if ((size_t)row2 >= pos)
         {
             if (numRows > 0)
             {
                 // If rows inserted, increase row counter where necessary

-                coords2.SetRow(row2 + numRows);
-               if ( (size_t)row1 >= pos )
-                   coords1.SetRow(row1 + numRows);
+                coords2.SetRow( row2 + numRows );
+                if ((size_t)row1 >= pos)
+                    coords1.SetRow( row1 + numRows );

             }
             else if (numRows < 0)
             {
             }
             else if (numRows < 0)
             {


@@ -571,57 +1055,66 @@ void wxGridSelection::UpdateRows( size_t pos, int numRows )
                 if ((size_t)row2 >= pos - numRows)
                 {
                     // ...either decrement row counter (if row still exists)...
                 if ((size_t)row2 >= pos - numRows)
                 {
                     // ...either decrement row counter (if row still exists)...

-                    coords2.SetRow(row2 + numRows);
-                   if ( (size_t) row1 >= pos)
-                       coords1.SetRow( wxMax(row1 + numRows, (int) pos) );
-                   
+                    coords2.SetRow( row2 + numRows );
+                    if ((size_t)row1 >= pos)
+                        coords1.SetRow( wxMax(row1 + numRows, (int)pos) );
+

                 }
                 else
                 {
                 }
                 else
                 {

-                   if ( (size_t) row1 >= pos)
-                   {
-                       // ...or remove the attribute
-                       m_blockSelectionTopLeft.RemoveAt(n);
-                       m_blockSelectionBottomRight.RemoveAt(n);
-                       n--; count--;
-                   }
-                   else
-                       coords2.SetRow(pos);
+                    if ((size_t)row1 >= pos)
+                    {
+                        // ...or remove the attribute
+                        m_blockSelectionTopLeft.RemoveAt(n);
+                        m_blockSelectionBottomRight.RemoveAt(n);
+                        n--;
+                        count--;
+                    }
+                    else
+                        coords2.SetRow( pos );

                 }
             }
         }
     }
 
     count = m_rowSelection.GetCount();
                 }
             }
         }
     }
 
     count = m_rowSelection.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    for ( n = 0; n < count; n++ )

     {
     {

-        int & rowOrCol = m_rowSelection[n];
-        if ( (size_t)rowOrCol >= pos )
-        {
-            if ( numRows > 0 )
-            {
-                // If rows inserted, include row counter where necessary
-                rowOrCol += numRows;
-            }
-            else if ( numRows < 0)
-            {
-                // If rows deleted, either decrement row counter (if row still exists)
-                if ((size_t)rowOrCol >= pos - numRows)
-                    rowOrCol += numRows;
-                else
-                {
-                    m_rowSelection.RemoveAt(n);
-                    n--; count--;
-                }
-            }
-        }
+    int  rowOrCol_ = m_rowSelection[n];
+
+      if ((size_t) rowOrCol_ >= pos)
+      {
+          if ( numRows > 0 )
+          {
+              m_rowSelection[n] += numRows;
+          }
+          else if ( numRows < 0 )
+          {
+              if ((size_t)rowOrCol_ >= (pos - numRows))
+                  m_rowSelection[n] += numRows;
+              else
+              {
+                  m_rowSelection.RemoveAt( n );
+                  n--;
+                  count--;
+              }
+          }
+      }

     }
     }

+    // No need to touch selected columns, unless we removed _all_
+    // rows, in this case, we remove all columns from the selection.
+
+    if ( !m_grid->GetNumberRows() )
+        m_colSelection.Clear();

 }
 
 }
 

+

 void wxGridSelection::UpdateCols( size_t pos, int numCols )
 {
     size_t count = m_cellSelection.GetCount();
 void wxGridSelection::UpdateCols( size_t pos, int numCols )
 {
     size_t count = m_cellSelection.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    size_t n;
+
+    for ( n = 0; n < count; n++ )

     {
         wxGridCellCoords& coords = m_cellSelection[n];
         wxCoord col = coords.GetCol();
     {
         wxGridCellCoords& coords = m_cellSelection[n];
         wxCoord col = coords.GetCol();


@@ -644,27 +1137,29 @@ void wxGridSelection::UpdateCols( size_t pos, int numCols )
                 {
                     // ...or remove the attribute
                     m_cellSelection.RemoveAt(n);
                 {
                     // ...or remove the attribute
                     m_cellSelection.RemoveAt(n);

-                    n--; count--;
+                    n--;
+                    count--;

                 }
             }
         }
     }
 
     count = m_blockSelectionTopLeft.GetCount();
                 }
             }
         }
     }
 
     count = m_blockSelectionTopLeft.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    for ( n = 0; n < count; n++ )

     {
         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
         wxCoord col1 = coords1.GetCol();
         wxCoord col2 = coords2.GetCol();
     {
         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
         wxCoord col1 = coords1.GetCol();
         wxCoord col2 = coords2.GetCol();

+

         if ((size_t)col2 >= pos)
         {
             if (numCols > 0)
             {
                 // If rows inserted, increase row counter where necessary
                 coords2.SetCol(col2 + numCols);
         if ((size_t)col2 >= pos)
         {
             if (numCols > 0)
             {
                 // If rows inserted, increase row counter where necessary
                 coords2.SetCol(col2 + numCols);

-               if ( (size_t)col1 >= pos )
-                   coords1.SetCol(col1 + numCols);
+                if ((size_t)col1 >= pos)
+                    coords1.SetCol(col1 + numCols);

             }
             else if (numCols < 0)
             {
             }
             else if (numCols < 0)
             {


@@ -673,65 +1168,72 @@ void wxGridSelection::UpdateCols( size_t pos, int numCols )
                 {
                     // ...either decrement col counter (if col still exists)...
                     coords2.SetCol(col2 + numCols);
                 {
                     // ...either decrement col counter (if col still exists)...
                     coords2.SetCol(col2 + numCols);

-                   if ( (size_t) col1 >= pos)
-                       coords1.SetCol( wxMax(col1 + numCols, (int) pos) );
-                   
+                    if ( (size_t) col1 >= pos)
+                        coords1.SetCol( wxMax(col1 + numCols, (int)pos) );
+

                 }
                 else
                 {
                 }
                 else
                 {

-                   if ( (size_t) col1 >= pos)
-                   {
-                       // ...or remove the attribute
-                       m_blockSelectionTopLeft.RemoveAt(n);
-                       m_blockSelectionBottomRight.RemoveAt(n);
-                       n--; count--;
-                   }
-                   else
-                       coords2.SetCol(pos);
+                    if ((size_t)col1 >= pos)
+                    {
+                        // ...or remove the attribute
+                        m_blockSelectionTopLeft.RemoveAt(n);
+                        m_blockSelectionBottomRight.RemoveAt(n);
+                        n--;
+                        count--;
+                    }
+                    else
+                        coords2.SetCol(pos);

                 }
             }
         }
     }
 
     count = m_colSelection.GetCount();
                 }
             }
         }
     }
 
     count = m_colSelection.GetCount();

-    for ( size_t n = 0; n < count; n++ )
+    for ( n = 0; n < count; n++ )

     {
     {

-        int & rowOrCol = m_colSelection[n];
-        if ( (size_t)rowOrCol >= pos )
+        int   rowOrCol = m_colSelection[n];
+
+        if ((size_t)rowOrCol >= pos)

         {
             if ( numCols > 0 )
         {
             if ( numCols > 0 )

+                m_colSelection[n] += numCols;
+            else if ( numCols < 0 )

             {
             {

-                // If cols inserted, include col counter where necessary
-                rowOrCol += numCols;
-            }
-            else if ( numCols < 0)
-            {
-                // If cols deleted, either decrement col counter (if col still exists)
-                if ((size_t)rowOrCol >= pos - numCols)
-                    rowOrCol += numCols;
+                if ((size_t)rowOrCol >= (pos - numCols))
+                    m_colSelection[n] += numCols;

                 else
                 {
                 else
                 {

-                    m_colSelection.RemoveAt(n);
-                    n--; count--;
+                    m_colSelection.RemoveAt( n );
+                    n--;
+                    count--;

                 }
             }
         }
     }
                 }
             }
         }
     }

+
+    // No need to touch selected rows, unless we removed _all_
+    // columns, in this case, we remove all rows from the selection.
+    if ( !m_grid->GetNumberCols() )
+        m_rowSelection.Clear();

 }
 
 int wxGridSelection::BlockContain( int topRow1, int leftCol1,
 }
 
 int wxGridSelection::BlockContain( int topRow1, int leftCol1,

-                                  int bottomRow1, int rightCol1,
-                                  int topRow2, int leftCol2,
-                                  int bottomRow2, int rightCol2 )
+                                   int bottomRow1, int rightCol1,
+                                   int topRow2, int leftCol2,
+                                   int bottomRow2, int rightCol2 )

 // returns 1, if Block1 contains Block2,
 //        -1, if Block2 contains Block1,
 //         0, otherwise
 {
     if ( topRow1 <= topRow2 && bottomRow2 <= bottomRow1 &&
 // returns 1, if Block1 contains Block2,
 //        -1, if Block2 contains Block1,
 //         0, otherwise
 {
     if ( topRow1 <= topRow2 && bottomRow2 <= bottomRow1 &&

-        leftCol1 <= leftCol2 && rightCol2 <= rightCol1 )
+         leftCol1 <= leftCol2 && rightCol2 <= rightCol1 )

         return 1;
     else if ( topRow2 <= topRow1 && bottomRow1 <= bottomRow2 &&
         return 1;
     else if ( topRow2 <= topRow1 && bottomRow1 <= bottomRow2 &&

-             leftCol2 <= leftCol1 && rightCol1 <= rightCol2 )
+              leftCol2 <= leftCol1 && rightCol1 <= rightCol2 )

         return -1;
         return -1;

+

     return 0;
 }
     return 0;
 }

+
+#endif