X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b1da81074ceaf318fbff330a3694e2d9e0e987cd..edb8f2985fc838f92c60d9efd42462441f3caea9:/src/generic/grid.cpp diff --git a/src/generic/grid.cpp b/src/generic/grid.cpp index 097a75dcaf..20389dfc48 100644 --- a/src/generic/grid.cpp +++ b/src/generic/grid.cpp @@ -3502,6 +3502,23 @@ void wxGridWindow::OnEraseBackground( wxEraseEvent& WXUNUSED(event) ) ////////////////////////////////////////////////////////////////////// +// Internal Helper function for computing row or column from some +// (unscrolled) coordinate value, using either +// m_defaultRowHeight/m_defaultColWidth or binary search on array +// of m_rowBottoms/m_ColRights to speed up the search! + +// Internal helper macros for simpler use of that function + +static int CoordToRowOrCol(int coord, int defaultDist, int minDist, + const wxArrayInt& BorderArray, bool maxOnOverflow); + +#define internalXToCol(x) CoordToRowOrCol(x, m_defaultColWidth, \ + WXGRID_MIN_COL_WIDTH, \ + m_colRights, TRUE) +#define internalYToRow(y) CoordToRowOrCol(y, m_defaultRowHeight, \ + WXGRID_MIN_ROW_HEIGHT, \ + m_rowBottoms, TRUE) +///////////////////////////////////////////////////////////////////// IMPLEMENT_DYNAMIC_CLASS( wxGrid, wxScrolledWindow ) @@ -3587,7 +3604,8 @@ void wxGrid::Create() // create the type registry m_typeRegistry = new wxGridTypeRegistry; - m_selection = 0; + m_selection = NULL; + // subwindow components that make up the wxGrid m_cornerLabelWin = new wxGridCornerLabelWindow( this, -1, @@ -3653,9 +3671,9 @@ bool wxGrid::SetTable( wxGridTableBase *table, bool takeOwnership, if ( m_created ) { // RD: Actually, this should probably be allowed. I think it would be - // nice to be able to switch multiple Tables in and out of a single - // View at runtime. Is there anything in the implmentation that would - // prevent this? + // nice to be able to switch multiple Tables in and out of a single + // View at runtime. Is there anything in the implementation that + // would prevent this? // At least, you now have to cope with m_selection wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") ); @@ -3960,7 +3978,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg ) // SetCurrentCell( 0, 0 ); } - m_selection->UpdateRows( pos, numRows ); + + if ( m_selection ) + m_selection->UpdateRows( pos, numRows ); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); if (attrProvider) attrProvider->UpdateAttrRows( pos, numRows ); @@ -4043,7 +4063,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg ) if ( m_currentCellCoords.GetRow() >= m_numRows ) m_currentCellCoords.Set( 0, 0 ); } - m_selection->UpdateRows( pos, -((int)numRows) ); + + if ( m_selection ) + m_selection->UpdateRows( pos, -((int)numRows) ); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); if (attrProvider) { attrProvider->UpdateAttrRows( pos, -((int)numRows) ); @@ -4097,7 +4119,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg ) // SetCurrentCell( 0, 0 ); } - m_selection->UpdateCols( pos, numCols ); + + if ( m_selection ) + m_selection->UpdateCols( pos, numCols ); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); if (attrProvider) attrProvider->UpdateAttrCols( pos, numCols ); @@ -4179,7 +4203,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg ) if ( m_currentCellCoords.GetCol() >= m_numCols ) m_currentCellCoords.Set( 0, 0 ); } - m_selection->UpdateCols( pos, -((int)numCols) ); + + if ( m_selection ) + m_selection->UpdateCols( pos, -((int)numCols) ); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); if (attrProvider) { attrProvider->UpdateAttrCols( pos, -((int)numCols) ); @@ -4243,7 +4269,7 @@ wxArrayInt wxGrid::CalcRowLabelsExposed( const wxRegion& reg ) // find the row labels within these bounds // int row; - for ( row = YToRow(top); row < m_numRows; row++ ) + for ( row = internalYToRow(top); row < m_numRows; row++ ) { if ( GetRowBottom(row) < top ) continue; @@ -4294,7 +4320,7 @@ wxArrayInt wxGrid::CalcColLabelsExposed( const wxRegion& reg ) // find the cells within these bounds // int col; - for ( col = XToCol(left); col < m_numCols; col++ ) + for ( col = internalXToCol(left); col < m_numCols; col++ ) { if ( GetColRight(col) < left ) continue; @@ -4345,7 +4371,7 @@ wxGridCellCoordsArray wxGrid::CalcCellsExposed( const wxRegion& reg ) // find the cells within these bounds // int row, col; - for ( row = YToRow(top); row < m_numRows; row++ ) + for ( row = internalYToRow(top); row < m_numRows; row++ ) { if ( GetRowBottom(row) <= top ) continue; @@ -4353,7 +4379,7 @@ wxGridCellCoordsArray wxGrid::CalcCellsExposed( const wxRegion& reg ) if ( GetRowTop(row) > bottom ) break; - for ( col = XToCol(left); col < m_numCols; col++ ) + for ( col = internalXToCol(left); col < m_numCols; col++ ) { if ( GetColRight(col) <= left ) continue; @@ -4380,7 +4406,11 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event ) if ( event.Dragging() ) { - m_isDragging = TRUE; + if (!m_isDragging) + { + m_isDragging = TRUE; + m_rowLabelWin->CaptureMouse(); + } if ( event.LeftIsDown() ) { @@ -4410,11 +4440,14 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event ) case WXGRID_CURSOR_SELECT_ROW: if ( (row = YToRow( y )) >= 0 ) { - m_selection->SelectRow( row, - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + if ( m_selection ) + { + m_selection->SelectRow( row, + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } } // default label to suppress warnings about "enumeration value @@ -4426,8 +4459,14 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event ) return; } - m_isDragging = FALSE; + if ( m_isDragging && (event.Entering() || event.Leaving()) ) + return; + if (m_isDragging) + { + if (m_rowLabelWin->HasCapture()) m_rowLabelWin->ReleaseMouse(); + m_isDragging = FALSE; + } // ------------ Entering or leaving the window // @@ -4453,21 +4492,29 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event ) { if ( !event.ShiftDown() && !event.ControlDown() ) ClearSelection(); - if ( event.ShiftDown() ) - m_selection->SelectBlock( m_currentCellCoords.GetRow(), - 0, - row, - GetNumberCols() - 1, - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); - else - m_selection->SelectRow( row, - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + else if ( m_selection ) + { + if ( event.ShiftDown() ) + { + m_selection->SelectBlock( m_currentCellCoords.GetRow(), + 0, + row, + GetNumberCols() - 1, + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } + else + { + m_selection->SelectRow( row, + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } + } + ChangeCursorMode(WXGRID_CURSOR_SELECT_ROW, m_rowLabelWin); } } @@ -4566,7 +4613,11 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event ) if ( event.Dragging() ) { - m_isDragging = TRUE; + if (!m_isDragging) + { + m_isDragging = TRUE; + m_colLabelWin->CaptureMouse(); + } if ( event.LeftIsDown() ) { @@ -4596,11 +4647,14 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event ) case WXGRID_CURSOR_SELECT_COL: if ( (col = XToCol( x )) >= 0 ) { - m_selection->SelectCol( col, - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + if ( m_selection ) + { + m_selection->SelectCol( col, + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } } // default label to suppress warnings about "enumeration value @@ -4612,8 +4666,14 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event ) return; } - m_isDragging = FALSE; + if ( m_isDragging && (event.Entering() || event.Leaving()) ) + return; + if (m_isDragging) + { + if (m_colLabelWin->HasCapture()) m_colLabelWin->ReleaseMouse(); + m_isDragging = FALSE; + } // ------------ Entering or leaving the window // @@ -4639,20 +4699,28 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event ) { if ( !event.ShiftDown() && !event.ControlDown() ) ClearSelection(); - if ( event.ShiftDown() ) - m_selection->SelectBlock( 0, - m_currentCellCoords.GetCol(), - GetNumberRows() - 1, col, - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); - else - m_selection->SelectCol( col, - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + if ( m_selection ) + { + if ( event.ShiftDown() ) + { + m_selection->SelectBlock( 0, + m_currentCellCoords.GetCol(), + GetNumberRows() - 1, col, + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } + else + { + m_selection->SelectCol( col, + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } + } + ChangeCursorMode(WXGRID_CURSOR_SELECT_COL, m_colLabelWin); } } @@ -4813,7 +4881,7 @@ void wxGrid::ChangeCursorMode(CursorMode mode, if ( m_winCapture ) { - m_winCapture->ReleaseMouse(); + if (m_winCapture->HasCapture()) m_winCapture->ReleaseMouse(); m_winCapture = (wxWindow *)NULL; } @@ -4984,14 +5052,17 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event ) ClearSelection(); if ( event.ShiftDown() ) { - m_selection->SelectBlock( m_currentCellCoords.GetRow(), - m_currentCellCoords.GetCol(), - coords.GetRow(), - coords.GetCol(), - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + if ( m_selection ) + { + m_selection->SelectBlock( m_currentCellCoords.GetRow(), + m_currentCellCoords.GetCol(), + coords.GetRow(), + coords.GetCol(), + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } } else if ( XToEdgeOfCol(x) < 0 && YToEdgeOfRow(y) < 0 ) @@ -5021,12 +5092,15 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event ) { if ( event.ControlDown() ) { - m_selection->ToggleCellSelection( coords.GetRow(), - coords.GetCol(), - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + if ( m_selection ) + { + m_selection->ToggleCellSelection( coords.GetRow(), + coords.GetCol(), + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } m_selectingTopLeft = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords; m_selectingKeyboard = coords; @@ -5034,9 +5108,14 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event ) else { SetCurrentCell( coords ); - if ( m_selection->GetSelectionMode() - != wxGrid::wxGridSelectCells) - HighlightBlock( coords, coords ); + if ( m_selection ) + { + if ( m_selection->GetSelectionMode() != + wxGrid::wxGridSelectCells ) + { + HighlightBlock( coords, coords ); + } + } } m_waitForSlowClick = TRUE; } @@ -5072,17 +5151,22 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event ) { if (m_winCapture) { - m_winCapture->ReleaseMouse(); + if (m_winCapture->HasCapture()) m_winCapture->ReleaseMouse(); m_winCapture = NULL; } - m_selection->SelectBlock( m_selectingTopLeft.GetRow(), - m_selectingTopLeft.GetCol(), - m_selectingBottomRight.GetRow(), - m_selectingBottomRight.GetCol(), - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + + if ( m_selection ) + { + m_selection->SelectBlock( m_selectingTopLeft.GetRow(), + m_selectingTopLeft.GetCol(), + m_selectingBottomRight.GetRow(), + m_selectingBottomRight.GetCol(), + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } + m_selectingTopLeft = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords; } @@ -5738,12 +5822,15 @@ void wxGrid::OnKeyDown( wxKeyEvent& event ) case WXK_SPACE: if ( event.ControlDown() ) { - m_selection->ToggleCellSelection( m_currentCellCoords.GetRow(), - m_currentCellCoords.GetCol(), - event.ControlDown(), - event.ShiftDown(), - event.AltDown(), - event.MetaDown() ); + if ( m_selection ) + { + m_selection->ToggleCellSelection( m_currentCellCoords.GetRow(), + m_currentCellCoords.GetCol(), + event.ControlDown(), + event.ShiftDown(), + event.AltDown(), + event.MetaDown() ); + } break; } if ( !IsEditable() ) @@ -5807,14 +5894,20 @@ void wxGrid::OnKeyUp( wxKeyEvent& event ) { if ( m_selectingTopLeft != wxGridNoCellCoords && m_selectingBottomRight != wxGridNoCellCoords ) - m_selection->SelectBlock( m_selectingTopLeft.GetRow(), - m_selectingTopLeft.GetCol(), - m_selectingBottomRight.GetRow(), - m_selectingBottomRight.GetCol(), - event.ControlDown(), - TRUE, - event.AltDown(), - event.MetaDown() ); + { + if ( m_selection ) + { + m_selection->SelectBlock( m_selectingTopLeft.GetRow(), + m_selectingTopLeft.GetCol(), + m_selectingBottomRight.GetRow(), + m_selectingBottomRight.GetCol(), + event.ControlDown(), + TRUE, + event.AltDown(), + event.MetaDown() ); + } + } + m_selectingTopLeft = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords; m_selectingKeyboard = wxGridNoCellCoords; @@ -5876,16 +5969,20 @@ void wxGrid::HighlightBlock( int topRow, int leftCol, int bottomRow, int rightCo int temp; wxGridCellCoords updateTopLeft, updateBottomRight; - if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows ) - { - leftCol = 0; - rightCol = GetNumberCols() - 1; - } - else if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns ) + if ( m_selection ) { - topRow = 0; - bottomRow = GetNumberRows() - 1; + if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows ) + { + leftCol = 0; + rightCol = GetNumberCols() - 1; + } + else if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns ) + { + topRow = 0; + bottomRow = GetNumberRows() - 1; + } } + if ( topRow > bottomRow ) { temp = topRow; @@ -6293,7 +6390,7 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & WXUNUSED(reg) ) // horizontal grid lines // int i; - for ( i = YToRow(top); i < m_numRows; i++ ) + for ( i = internalYToRow(top); i < m_numRows; i++ ) { int bot = GetRowBottom(i) - 1; @@ -6311,7 +6408,7 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & WXUNUSED(reg) ) // vertical grid lines // - for ( i = XToCol(left); i < m_numCols; i++ ) + for ( i = internalXToCol(left); i < m_numCols; i++ ) { int colRight = GetColRight(i) - 1; if ( colRight > right ) @@ -6724,8 +6821,13 @@ void wxGrid::ShowCellEditControl() #endif // 0 // cell is shifted by one pixel - rect.x--; - rect.y--; + // However, don't allow x or y to become negative + // since the SetSize() method interprets that as + // "don't change." + if (rect.x > 0) + rect.x--; + if (rect.y > 0) + rect.y--; wxGridCellAttr* attr = GetCellAttr(row, col); wxGridCellEditor* editor = attr->GetEditor(this, row, col); @@ -6830,16 +6932,16 @@ void wxGrid::XYToCell( int x, int y, wxGridCellCoords& coords ) // Internal Helper function for computing row or column from some // (unscrolled) coordinate value, using either -// m_defaultRowHeight/m_defaultColWidth or binary search on array +// m_defaultRowHeight/m_defaultColWidth or binary search on array // of m_rowBottoms/m_ColRights to speed up the search! static int CoordToRowOrCol(int coord, int defaultDist, int minDist, - wxArrayInt BorderArray) + const wxArrayInt& BorderArray, bool maxOnOverflow) { if (!defaultDist) defaultDist = 1; - unsigned int i_max = coord / defaultDist, - i_min = 0; + size_t i_max = coord / defaultDist, + i_min = 0; if (BorderArray.IsEmpty()) { return i_max; @@ -6847,7 +6949,7 @@ static int CoordToRowOrCol(int coord, int defaultDist, int minDist, if ( i_max >= BorderArray.GetCount()) i_max = BorderArray.GetCount() - 1; - else + else { if ( coord >= BorderArray[i_max]) { @@ -6857,17 +6959,17 @@ static int CoordToRowOrCol(int coord, int defaultDist, int minDist, if ( i_max >= BorderArray.GetCount()) i_max = BorderArray.GetCount() - 1; } - if ( coord > BorderArray[i_max]) - return -1; + if ( coord >= BorderArray[i_max]) + return maxOnOverflow ? (int)i_max : -1; + if ( coord < BorderArray[0] ) + return 0; - while ( i_max - i_min > 1 ) + while ( i_max - i_min > 0 ) { wxCHECK_MSG(BorderArray[i_min] <= coord && coord < BorderArray[i_max], - -1, _T("wxGrid: internal error in CoordToRowOrCol")); + 0, _T("wxGrid: internal error in CoordToRowOrCol")); if (coord >= BorderArray[ i_max - 1]) - { return i_max; - } else i_max--; int median = i_min + (i_max - i_min + 1) / 2; @@ -6882,14 +6984,14 @@ static int CoordToRowOrCol(int coord, int defaultDist, int minDist, int wxGrid::YToRow( int y ) { return CoordToRowOrCol(y, m_defaultRowHeight, - WXGRID_MIN_ROW_HEIGHT, m_rowBottoms); + WXGRID_MIN_ROW_HEIGHT, m_rowBottoms, FALSE); } int wxGrid::XToCol( int x ) { return CoordToRowOrCol(x, m_defaultColWidth, - WXGRID_MIN_COL_WIDTH, m_colRights); + WXGRID_MIN_COL_WIDTH, m_colRights, FALSE); } @@ -6898,16 +7000,17 @@ int wxGrid::XToCol( int x ) // int wxGrid::YToEdgeOfRow( int y ) { - int i, d; + int i; + i = internalYToRow(y); - for ( i = YToRow( y ) - 1; i < m_numRows; i++ ) + if ( GetRowHeight(i) > WXGRID_LABEL_EDGE_ZONE ) { - if ( GetRowHeight(i) > WXGRID_LABEL_EDGE_ZONE ) - { - d = abs( y - GetRowBottom(i) ); - if ( d < WXGRID_LABEL_EDGE_ZONE ) - return i; - } + // We know that we are in row i, test whether we are + // close enough to lower or upper border, respectively. + if ( abs(GetRowBottom(i) - y) < WXGRID_LABEL_EDGE_ZONE ) + return i; + else if( i > 0 && y - GetRowTop(i) < WXGRID_LABEL_EDGE_ZONE ) + return i - 1; } return -1; @@ -6919,16 +7022,17 @@ int wxGrid::YToEdgeOfRow( int y ) // int wxGrid::XToEdgeOfCol( int x ) { - int i, d; + int i; + i = internalXToCol(x); - for (i = XToCol( x ) - 1; i < m_numCols; i++ ) + if ( GetColWidth(i) > WXGRID_LABEL_EDGE_ZONE ) { - if ( GetColWidth(i) > WXGRID_LABEL_EDGE_ZONE ) - { - d = abs( x - GetColRight(i) ); - if ( d < WXGRID_LABEL_EDGE_ZONE ) - return i; - } + // We know that we are in column i, test whether we are + // close enough to right or left border, respectively. + if ( abs(GetColRight(i) - x) < WXGRID_LABEL_EDGE_ZONE ) + return i; + else if( i > 0 && x - GetColLeft(i) < WXGRID_LABEL_EDGE_ZONE ) + return i - 1; } return -1; @@ -8717,7 +8821,8 @@ void wxGrid::SelectRow( int row, bool addToSelected ) if ( IsSelection() && !addToSelected ) ClearSelection(); - m_selection->SelectRow( row, FALSE, addToSelected ); + if ( m_selection ) + m_selection->SelectRow( row, FALSE, addToSelected ); } @@ -8726,7 +8831,8 @@ void wxGrid::SelectCol( int col, bool addToSelected ) if ( IsSelection() && !addToSelected ) ClearSelection(); - m_selection->SelectCol( col, FALSE, addToSelected ); + if ( m_selection ) + m_selection->SelectCol( col, FALSE, addToSelected ); } @@ -8736,15 +8842,19 @@ void wxGrid::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol, if ( IsSelection() && !addToSelected ) ClearSelection(); - m_selection->SelectBlock( topRow, leftCol, bottomRow, rightCol, - FALSE, addToSelected ); + if ( m_selection ) + m_selection->SelectBlock( topRow, leftCol, bottomRow, rightCol, + FALSE, addToSelected ); } void wxGrid::SelectAll() { if ( m_numRows > 0 && m_numCols > 0 ) - m_selection->SelectBlock( 0, 0, m_numRows-1, m_numCols-1 ); + { + if ( m_selection ) + m_selection->SelectBlock( 0, 0, m_numRows-1, m_numCols-1 ); + } } // @@ -8753,6 +8863,9 @@ void wxGrid::SelectAll() void wxGrid::DeselectRow( int row ) { + if ( !m_selection ) + return; + if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows ) { if ( m_selection->IsInSelection(row, 0 ) ) @@ -8771,6 +8884,9 @@ void wxGrid::DeselectRow( int row ) void wxGrid::DeselectCol( int col ) { + if ( !m_selection ) + return; + if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns ) { if ( m_selection->IsInSelection(0, col ) ) @@ -8789,31 +8905,32 @@ void wxGrid::DeselectCol( int col ) void wxGrid::DeselectCell( int row, int col ) { - if ( m_selection->IsInSelection(row, col) ) + if ( m_selection && m_selection->IsInSelection(row, col) ) m_selection->ToggleCellSelection(row, col); } bool wxGrid::IsSelection() { - return ( m_selection->IsSelection() || + return ( m_selection && (m_selection->IsSelection() || ( m_selectingTopLeft != wxGridNoCellCoords && - m_selectingBottomRight != wxGridNoCellCoords ) ); + m_selectingBottomRight != wxGridNoCellCoords) ) ); } bool wxGrid::IsInSelection( int row, int col ) { - return ( m_selection->IsInSelection( row, col ) || + return ( m_selection && (m_selection->IsInSelection( row, col ) || ( row >= m_selectingTopLeft.GetRow() && col >= m_selectingTopLeft.GetCol() && row <= m_selectingBottomRight.GetRow() && - col <= m_selectingBottomRight.GetCol() ) ); + col <= m_selectingBottomRight.GetCol() )) ); } void wxGrid::ClearSelection() { m_selectingTopLeft = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords; - m_selection->ClearSelection(); + if ( m_selection ) + m_selection->ClearSelection(); }