Пример #1
0
bool nuiMatrixView::ForceSelectColumn(uint col, bool set)
{
  bool eventDisabled = false;
  
  if (!SelectionChanged.IsEnabled())
    eventDisabled = true;
  
  if (!eventDisabled)
    SelectionChanged.Disable();

  
  uint firstRow=0;
  if (mColumnHeader)
    firstRow=1;
  
  // unselect
  if (!set)
  {
    for (uint k=firstRow; k < GetNbRows(); k++)
      SelectCell(col, k, false, false);

    mColumnSelected[col] = false;
  }

      
  // select
  else
  {

    for (uint k=firstRow; k < GetNbRows(); k++)
      SelectCell(col, k, true, false);
      
    mColumnSelected[col] = true;
  }
          

  if (!eventDisabled)
    SelectionChanged.Enable();
	SelectionChanged();

  return true;
}
Пример #2
0
bool nuiMatrixView::ForceSelectRow(uint row, bool set)
{
  bool eventDisabled = false;
  
  if (!SelectionChanged.IsEnabled())
    eventDisabled = true;
  
  if (!eventDisabled)
    SelectionChanged.Disable();

  
  uint firstCol=0;
  if (mRowHeader)
    firstCol=1;
  
  // unselect
  if (!set)
  {
    for (uint k=firstCol; k < GetNbColumns(); k++)
      SelectCell(k, row, false, false);

    mRowSelected[row] = false;
  }

      
  // select
  else
  {
    for (uint k=firstCol; k < GetNbColumns(); k++)
      SelectCell(k, row, true, false);
      
    mRowSelected[row] = true;
  }
          

  if (!eventDisabled)
    SelectionChanged.Enable();
    
	SelectionChanged();

  return true;
}
Пример #3
0
bool nuiMatrixView::Selected(uint col, uint row)
{
  if (mColumnHeader & mRowHeader & !col & !row)
  {
    if (mCanSelectAll)
      return SelectAll();
    else return true;
  }
    
  if (mColumnHeader && !row)
    return SelectColumn(col);
    
  if (mRowHeader & !col)
    return SelectRow(row);
    
  if (IsSelected(col, row))
    return SelectCell(col, row, false);
    
  return SelectCell(col, row, true);
}
Пример #4
0
void
PIInspectorTable::DuplicateDynamicItem()
{

	// Validate pointers.

	ValidateThis_();

	// See where the dynamic item is.

	DMListAttribute* attr;
	UInt32 after;
	if (!GetSelectedListItem(attr, after))
		return;

	ValidateObject_(attr);
	
	// We have a valid list item. Set up a transaction for the new item.
	
	StDMTransactionBuilder trans(mFollowUndoHost, mFollowSelection, cmd_Duplicate);

	// Duplicate current item.
	
	DMElement* currentItem;
	attr->GetSubElements().FetchItemAt(after, &currentItem);
	ValidateObject_(currentItem);

	DMAttributePtr newItem;
	newItem = (DMAttribute*) currentItem->Clone();
	ValidateObject_(newItem.GetObject());
	
	// Insert it into the container.
	
	attr->InsertElementAt(after+1, newItem, true);

	// Select the new item.
	
	OVItem* newDisplay = FindItemForSubElement(newItem, true);
	if (newDisplay != nil) {
		ValidateObject_(newDisplay);
		STableCell cell(FindRowForItem(newDisplay), 1);
		UnselectAllCells();
		SelectCell(cell);
	}

	// Commit the transaction.
	
	trans.Commit();
	
}
Пример #5
0
bool nuiMatrixView::SelectAll()
{
  if (mAllSelected)
    return DeselectAll();
    
  uint row, col;
  uint firstRow = 0;
  uint firstCol = 0;
  if (mColumnHeader)
    firstRow=1;
  if (mRowHeader)
    firstCol = 1;
  
  mAllSelected = true;
  

  bool eventDisabled = false;
  
  if (!SelectionChanged.IsEnabled())
    eventDisabled = true;
  
  if (!eventDisabled)
    SelectionChanged.Disable();

 
  // entire rows and cols have a special selection process
  for (row=firstRow; row < GetNbRows(); row++)
    mRowSelected[row] = true;
  for (col=firstCol; col < GetNbColumns(); col++)
    mColumnSelected[col] = true;
  
  for (row=firstRow; row < GetNbRows(); row++)
  {
    for (col=firstCol; col < GetNbColumns(); col++)
    {
      SelectCell(col, row, true, false);
    }
  }

  
  if (!eventDisabled)
    SelectionChanged.Enable();
 
	SelectionChanged();
  
  return true;  
}
Пример #6
0
		/*=============================================================================
		-- Message handling.
		=============================================================================*/
		void ListBox::_SendMessage(Message message)
		{
			switch (message)
			{
				//was a cell selected?
				case MBL_DOWN_OVER:
				{
					if (!mSelectedCell.expired())
						mSelectedCell.lock()->SetBackgroundImage("cell.png");

					SelectCell(GetCellAtPoint(GetWindow()->GetInput()->GetMousePos()));

					if (!mSelectedCell.expired())
						mSelectedCell.lock()->SetBackgroundImage("cell_selected.png");

					break;
				}
			}
		}
Пример #7
0
void
wxGridSelection::ToggleCellSelection(int row, int col,
                                     const wxKeyboardState& kbd)
{
    // if the cell is not selected, select it
    if ( !IsInSelection ( row, col ) )
    {
        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;

    // 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 == wxGrid::wxGridSelectCells )
    {
        count = m_cellSelection.GetCount();
        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();
    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
    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
    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;
    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;
                }
            }
        }
    }
}
Пример #8
0
void wxGridSelection::SelectBlock( int topRow, int leftCol,
                                   int bottomRow, int rightCol,
                                   const wxKeyboardState& kbd,
                                   bool sendEvent )
{
    // 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 )
    {
        int temp = topRow;
        topRow = bottomRow;
        bottomRow = temp;
    }

    if ( leftCol > rightCol )
    {
        int temp = leftCol;
        leftCol = rightCol;
        rightCol = temp;
    }

    // Handle single cell selection in SelectCell.
    // (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, n;

    if ( m_selectionMode == wxGrid::wxGridSelectRows )
    {
        // 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;
            }
        }

        // 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--;
                }
            }
        }

        // 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 )
    {
        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
            wxEVT_GRID_RANGE_SELECT,
            m_grid,
            wxGridCellCoords( topRow, leftCol ),
            wxGridCellCoords( bottomRow, rightCol ),
            true,
            kbd);
        m_grid->GetEventHandler()->ProcessEvent( gridEvt );
    }
}
Пример #9
0
void CCellView::MouseDown(BPoint where)
{
	StPenState save(this);
	
	try
	{
		bool optional = IsOptionalClick(Window()->CurrentMessage());
		
		if (!IsFocus() && !fEntering)
			MakeFocus();

		ResetOffset(-1);
	
		BRect myRect, bounds(Bounds());
		cell myCell = cell(fFrozen.h ? 1 : fPosition.h, fFrozen.v ? 1 : fPosition.v);

		if (fFirstGraphic)
		{
			if (fFirstGraphic->HandleMouseDown(where))
				return;
			else if (fFirstGraphic->HasFocus())
				fFirstGraphic->MakeFocus(false);
		}
	
		if (fCellBounds.Contains(where))
		{
			if ((PointIsInSelection(where) &&
				!fEntering) &&
				(optional ||
				WaitMouseMoved(where, false)))
			{
				StartDrag(where, optional);
			}
			else if (optional)
				GridMenu(where);
			else
				SelectCell(where);
		}
		
		if (!fShowBorders)
			return;
		
		myRect = bounds;
		myRect.top = fBorderHeight;
		myRect.left = 0.0;
		myRect.right = fBorderWidth;
	
		if (myRect.Contains(where))
		{
			if (optional)
				BorderMenu(where);
			else
			{
				do
				{
					myCell.v++;
					GetCellRect(myCell, myRect);
				}
				while (myRect.top + 2.0 <= where.y);
		
				if (where.y >= myRect.top - 2.0 && where.y <= myRect.top + 2.0)
					ResizeRow(where, myCell.v - 1);
				else
					SelectRow(where, myCell.v - 1);
			}
			return;
		}
	
		myRect.Set(fBorderWidth, 0.0, bounds.right, fBorderHeight);
	
		if (myRect.Contains(where))
		{
			if (optional)
				BorderMenu(where);
			else
			{
				do
				{
					myCell.h++;
					GetCellRect(myCell, myRect);
				}
				while (myRect.left + 2.0 <= where.x);
		
				if (where.x >= myRect.left - 2.0 && where.x <= myRect.left + 2.0)
					ResizeCol(where, myCell.h - 1);
				else
					SelectCol(where, myCell.h - 1);
			}
			return;
		}
	
		myRect.Set(0.0, 0.0, fBorderWidth, fBorderHeight);
	
		if (myRect.Contains(where))
		{
			if (!fEntering)
				SetSelection(range(1, 1, kColCount, kRowCount));
			else
				beep();
		}
	}
	
	catch(CErr& e)
	{
		CATCHED;
		e.DoError();
		return;
	}
	
	catch(...)
	{
		CATCHED;
		ASSERT(FALSE);
	}
}
Пример #10
0
//
//	[public] ODBCGridCtrl::Load
//
BOOL 
ODBCGridCtrl::Load()
	{
	ASSERT( m_pRstSelect && m_pRstSelect->IsOpen() );
	AfxGetApp()->BeginWaitCursor();
	SetRedraw(FALSE);

	// Open recordset and load record data. ##########
	try
		{
		// Free record data array. ###################
		FreeRecordDataArray();
		// ###########################################

		m_pRecord	= m_pRstSelect->GetRecordPtr();
		ASSERT( m_pRecord );
		m_nUIDField = m_pRecord->GetFieldID(m_sUIDField);
		ASSERT( m_nUIDField > -1 );

		m_pArrRecDataById->OptimizeForLargeData	(TRUE);
		BuildODBCColumnsArray					();
		m_pRecord->SetFreeDataOnDestroy			(FALSE);

		void*	lpRecData		= m_pRecord->GetRecordData();
		int		nRecDataSize	= m_pRecord->GetRecordSize();
		m_pRecord->SetRecordData(lpRecData);

		while( !m_pRstSelect->IsEOF() )
			{
			InsertItem(0, _T(""));
			long lUID			= m_pRecord->GetLong(m_nUIDField);
			
			// Allocate record data. #############################
			void* lpNewRecData	= new BYTE[nRecDataSize];
			memcpy(lpNewRecData, lpRecData, nRecDataSize);
			// ###################################################

			m_pArrRecDataById->Add	(lUID, (long)lpNewRecData);
			m_pRstSelect->MoveNext	();
			}

		delete lpRecData;
		m_pRstSelect->Close();
		}
	catch(CDBException* e)
		{
		SetRedraw(TRUE);
		m_strLastError = e->m_strError;
		e->Delete();
		AfxGetApp()->EndWaitCursor();
		return FALSE;
		}
	// ###############################################

	if( GetItemCount() > -1 )
		SelectCell(0, 0, true);

	SetRedraw(TRUE);
	AfxGetApp()->EndWaitCursor();
	return TRUE;
	}
Пример #11
0
void wxGridSelection::SelectBlock( int topRow, int leftCol,
                                   int bottomRow, int rightCol,
                                   bool ControlDown, bool ShiftDown,
                                   bool AltDown, bool MetaDown,
                                   bool sendEvent )
{
    // Fix the coordinates of the block if needed.
    if ( m_selectionMode == wxGrid::wxGridSelectRows )
    {
        leftCol = 0;
        rightCol = m_grid->GetNumberCols() - 1;
    }
    else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
    {
        topRow = 0;
        bottomRow = m_grid->GetNumberRows() - 1;
    }
    if ( topRow > bottomRow )
    {
        int temp = topRow;
        topRow = bottomRow;
        bottomRow = temp;
    }

    if ( leftCol > rightCol )
    {
        int temp = leftCol;
        leftCol = rightCol;
        rightCol = temp;
    }

    // Handle single cell selection in SelectCell.
    // (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, ControlDown,  ShiftDown,
                    AltDown, MetaDown, sendEvent );

    size_t count, n;
    // 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--;
            }
        }
    }

    // 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.
    if ( m_selectionMode != wxGrid::wxGridSelectColumns )
    {
        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;
            }
        }
    }
    if ( m_selectionMode != wxGrid::wxGridSelectRows )
    {
        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 )
    {
        wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
                                        wxEVT_GRID_RANGE_SELECT,
                                        m_grid,
                                        wxGridCellCoords( topRow, leftCol ),
                                        wxGridCellCoords( bottomRow, rightCol ),
                                        true,
                                        ControlDown, ShiftDown,
                                        AltDown, MetaDown );
        m_grid->GetEventHandler()->ProcessEvent(gridEvt);
    }
}