c# - Windows 窗体/ TreeView : How do I put CheckBoxes only on the leaves?

Question

在 TreeView 上选择 CheckBoxes=true 会在每个节点上放置复选框。我只想要它们在叶子上？怎么办？

Answer 1

我认为您需要像这样为节点实现一个 ownerdraw 事件处理程序:

treeView.DrawMode = System.Windows.Forms.TreeViewDrawMode.OwnerDrawAll;
treeView.DrawNode += new System.Windows.Forms.DrawTreeNodeEventHandler(this.treeView_DrawNode);

private void treeView_DrawNode(object sender, DrawTreeNodeEventArgs e)
{
    if(NodeWithCheckBox(e.Node))
    {
       // draw entry with checkbox
       e.DrawDefault = false;
    }
    else
    {
       e.DrawDefault = true;
    }
}