Esempio n. 1
0
        private void CanvasPanel_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            if (IsMultiSelecting)
            {
                var geometry       = new RectangleGeometry(new Rect(SelectionSquareTopLeft, e.GetPosition(CanvasPanel)));
                var visualInRegion = CanvasPanel.GetVisuals(geometry);

                MessageBox.Show($"选中数量:{visualInRegion.Count}");
                IsMultiSelecting = false;
                CanvasPanel.RemoveVisual(SelectionSquare);
                CanvasPanel.ReleaseMouseCapture();
            }
            else
            {
                IsDragging = false;
            }
        }