I am trying to make a TreeView with Nodes that habe several lines. I get it to draw the lines od text and a background, but the next Node starts in the second line and not below the first Node.
| private void anf_DrawNode( |
| object sender, DrawTreeNodeEventArgs e) |
| { |
| StringFormat sf = new StringFormat(); |
| sf.Trimming = StringTrimming.None; |
| // Draw the background and node text for a selected node. |
| if ((e.State & TreeNodeStates.Selected) != 0) |
| { |
| // Draw the background of the selected node. The NodeBounds |
| // method makes the highlight rectangle large enough to |
| // include the text of a node tag, if one is present. |
| e.Graphics.FillRectangle(Brushes.Beige, NodeBounds(e.Node)); |
| // Retrieve the node font. If the node font has not been set, |
| // use the TreeView font. |
| Font nodeFont = e.Node.NodeFont; |
| if (nodeFont == null) nodeFont = ((TreeView)sender).Font; |
| // Draw the node text. |
| e.Graphics.DrawString(e.Node.Text, nodeFont, Brushes.Black, |
| Rectangle.Inflate(NodeBounds(e.Node), 2, 0),sf); |
| } |
| // Use the default background and node text. |
| else |
| { |
| //e.DrawDefault = true; |
| // Draw the background of the selected node. The NodeBounds |
| // method makes the highlight rectangle large enough to |
| // include the text of a node tag, if one is present. |
| e.Graphics.FillRectangle(Brushes.White, NodeBounds(e.Node)); |
| // Retrieve the node font. If the node font has not been set, |
| // use the TreeView font. |
| Font nodeFont = e.Node.NodeFont; |
| if (nodeFont == null) nodeFont = ((TreeView)sender).Font; |
| // Draw the node text. |
| e.Graphics.DrawString(e.Node.Text, nodeFont, Brushes.Black, |
| Rectangle.Inflate(NodeBounds(e.Node), 2, 0), sf); |
| } |
| // If a node tag is present, draw its string representation |
| // to the right of the label text. |
| if (e.Node.Tag != null) |
| { |
| e.Graphics.DrawString(e.Node.Tag.ToString(), tagFont, |
| Brushes.Yellow, e.Bounds.Right + 2, e.Bounds.Top,sf); |
| } |
| // If the node has focus, draw the focus rectangle large, making |
| // it large enough to include the text of the node tag, if present. |
| if ((e.State & TreeNodeStates.Focused) != 0) |
| { |
| using (Pen focusPen = new Pen(Color.Black)) |
| { |
| focusPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot; |
| Rectangle focusBounds = NodeBounds(e.Node); |
| focusBounds.Size = new Size(focusBounds.Width - 1, |
| focusBounds.Height - 1); |
| e.Graphics.DrawRectangle(focusPen, focusBounds); |
| } |
| } |
| e.Node.TreeView.PerformLayout(); |
| } |
| private Rectangle NodeBounds(TreeNode node) |
| { |
| Rectangle bounds = node.Bounds; |
| Graphics g = this.CreateGraphics(); |
| int textWidth = (int)g.MeasureString(node.Text.ToString(), tagFont, (node.Bounds.Width - 50)).Width; |
| int textHeight = (int)g.MeasureString(node.Text.ToString(), tagFont,(node.Bounds.Width-5)).Height + 20; |
| bounds.Width = textWidth; |
| bounds.Height = textHeight; |
| node.Bounds.Inflate(new System.Drawing.Size(textWidth, textHeight+100)); |
| return bounds; |
| } |