Пример #1
0
        }         // ThumbPreviewMouseMove

        // ----------------------------------------------------------------------
        private void ThumbPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            Thumb          thumb          = sender as Thumb;
            GridViewColumn gridViewColumn = FindParentColumn(thumb);

            // suppress column resizing for proportional, fixed and range fill columns
            if (ProportionalColumn.IsProportionalColumn(gridViewColumn) ||
                FixedColumn.IsFixedColumn(gridViewColumn) ||
                IsFillColumn(gridViewColumn))
            {
                e.Handled = true;
            }
        }         // ThumbPreviewMouseLeftButtonDown
Пример #2
0
        }         // Refresh

        // ----------------------------------------------------------------------
        private void RegisterEvents(DependencyObject start)
        {
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(start); i++)
            {
                Visual childVisual = VisualTreeHelper.GetChild(start, i) as Visual;
                if (childVisual is Thumb)
                {
                    GridViewColumn gridViewColumn = FindParentColumn(childVisual);
                    if (gridViewColumn != null)
                    {
                        Thumb thumb = childVisual as Thumb;
                        if (ProportionalColumn.IsProportionalColumn(gridViewColumn) ||
                            FixedColumn.IsFixedColumn(gridViewColumn) || IsFillColumn(gridViewColumn))
                        {
                            thumb.IsHitTestVisible = false;
                        }
                        else
                        {
                            thumb.PreviewMouseMove           += new MouseEventHandler(ThumbPreviewMouseMove);
                            thumb.PreviewMouseLeftButtonDown += new MouseButtonEventHandler(ThumbPreviewMouseLeftButtonDown);
                            DependencyPropertyDescriptor.FromProperty(
                                GridViewColumn.WidthProperty,
                                typeof(GridViewColumn)).AddValueChanged(gridViewColumn, GridColumnWidthChanged);
                        }
                    }
                }
                else if (childVisual is GridViewColumnHeader)
                {
                    GridViewColumnHeader columnHeader = childVisual as GridViewColumnHeader;
                    columnHeader.SizeChanged += new SizeChangedEventHandler(GridColumnHeaderSizeChanged);
                }
                else if (scrollViewer == null && childVisual is ScrollViewer)
                {
                    scrollViewer = childVisual as ScrollViewer;
                    scrollViewer.ScrollChanged += new ScrollChangedEventHandler(ScrollViewerScrollChanged);
                    // assume we do the regulation of the horizontal scrollbar
                    scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Hidden;
                    scrollViewer.VerticalScrollBarVisibility   = verticalScrollBarVisibility;
                }

                RegisterEvents(childVisual); // recursive
            }
        }                                    // RegisterEvents
Пример #3
0
        }                                    // RegisterEvents

        // ----------------------------------------------------------------------
        private void UnregisterEvents(DependencyObject start)
        {
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(start); i++)
            {
                Visual childVisual = VisualTreeHelper.GetChild(start, i) as Visual;
                if (childVisual is Thumb)
                {
                    GridViewColumn gridViewColumn = FindParentColumn(childVisual);
                    if (gridViewColumn != null)
                    {
                        Thumb thumb = childVisual as Thumb;
                        if (ProportionalColumn.IsProportionalColumn(gridViewColumn) ||
                            FixedColumn.IsFixedColumn(gridViewColumn) || IsFillColumn(gridViewColumn))
                        {
                            thumb.IsHitTestVisible = true;
                        }
                        else
                        {
                            thumb.PreviewMouseMove           -= new MouseEventHandler(ThumbPreviewMouseMove);
                            thumb.PreviewMouseLeftButtonDown -= new MouseButtonEventHandler(ThumbPreviewMouseLeftButtonDown);
                            DependencyPropertyDescriptor.FromProperty(
                                GridViewColumn.WidthProperty,
                                typeof(GridViewColumn)).RemoveValueChanged(gridViewColumn, GridColumnWidthChanged);
                        }
                    }
                }
                else if (childVisual is GridViewColumnHeader)
                {
                    GridViewColumnHeader columnHeader = childVisual as GridViewColumnHeader;
                    columnHeader.SizeChanged -= new SizeChangedEventHandler(GridColumnHeaderSizeChanged);
                }
                else if (scrollViewer == null && childVisual is ScrollViewer)
                {
                    scrollViewer = childVisual as ScrollViewer;
                    scrollViewer.ScrollChanged -= new ScrollChangedEventHandler(ScrollViewerScrollChanged);
                }

                UnregisterEvents(childVisual); // recursive
            }
        }                                      // UnregisterEvents