树形平局毛刺 [英] Treeview draw glitch
问题描述
我实现了一个多色系统中为每个我的 TreeView控件
节点。但每次我展开一个子节点,它消费也描绘了节点在我rootNode中(图像2和3)。该代码是从我刚才的问题,这是错误的样子。
如果我决定关闭每个节点并重新扩大故障消失。(图片4)
这个问题似乎是与边界
这就是为什么平局是不是在正确的地方。
知道为什么吗?
私人无效treeView1_DrawNode(对象发件人,DrawTreeNodeEventArgs E)
{
的String [] =文本e.Node.Text.Split();
使用(字体的字体=新字体(this.Font,FontStyle.Regular))
{使用
(刷刷=新SolidBrush(Color.Red))
{
e.Graphics.DrawString(文本[0],字体,画笔,e.Bounds.Left,e.Bounds.Top);使用
}
(刷刷=新SolidBrush(Color.Blue))
{
的SizeF S = e.Graphics.MeasureString(文本[0],字体);
e.Graphics.DrawString(文本[1],字体,刷子,e.Bounds.Left +(int)的s.Width,e.Bounds.Top);
}
}
}
绘图故障似乎是一个准确的描述
您可以通过订阅AfterExpand事件围绕尝试这项工作:
无效treeView1_AfterExpand(对象发件人,TreeViewEventArgs E){
treeView1.Invalidate();
}
I implemented a multicolor system for each of my TreeView
nodes. But everytime I expand a child node, it expends but also paints the node over my rootNode (image 2 and 3). The code is from my previous question and this is what the bug looks like
If I decide to close every node and re-expand the glitch is gone.(image 4)
The problem Seems to be with the Bounds
that's why the draw isn't at the right place.
Any idea why ?
private void treeView1_DrawNode(object sender, DrawTreeNodeEventArgs e)
{
string[] texts = e.Node.Text.Split();
using (Font font = new Font(this.Font, FontStyle.Regular))
{
using (Brush brush = new SolidBrush(Color.Red))
{
e.Graphics.DrawString(texts[0], font, brush, e.Bounds.Left, e.Bounds.Top);
}
using (Brush brush = new SolidBrush(Color.Blue))
{
SizeF s = e.Graphics.MeasureString(texts[0], font);
e.Graphics.DrawString(texts[1], font, brush, e.Bounds.Left + (int)s.Width, e.Bounds.Top);
}
}
}
Drawing glitch seems to be an accurate description.
You can try this work around by subscribing to the AfterExpand event:
void treeView1_AfterExpand(object sender, TreeViewEventArgs e) {
treeView1.Invalidate();
}
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