在TreeNode复选框上双击beavior [英] Double-click beavior on a TreeNode checkbox

问题描述

我有一个 TreeView ，其中装有 TreeNodes 有图标和复选框。

I have a TreeView populated with TreeNodes having icons and checkboxes.

我一直试图在 BerforeCheck 方法中禁用其中一些丢弃事件的checkig / uncheck功能。在我双击该复选框之前，它工作正常：该复选框的图像与其实际状态相反（如果状态为 Checked = false ，则会显示一个复选标记）。我试图解决在 NodeDoubleClick 和 BeforeClick 方法中手动更改StateImageIndex失败的问题。

I've been tryig to disable the checkig/unchecking ability of some of them discarding the event in the BerforeCheck method. This works fine, until I double click on the checkbox: the image of the checkbox is the opposite of its real state (it shows a check mark if the status is Checked=false). I've tried to fix that changing the StateImageIndex manually in the NodeDoubleClick and BeforeClick method with no success.

更糟糕的是：我在 StateImageList 中添加了第三张图像（是的，我也希望复选框也处于三态），但是我还没有使用它（从未在我的代码中设置过），并且双击后第三张图像被设置为盒子的当前状态（此时我无法确定明确的行为）。

Even worse: I added a third image in the StateImageList (yes I want the checkboxes to be tri-state too) but I'm not using it yet (it's never set in my code), and the third image is set as the current state of the box after some double-click (at this point I can't determine a clear behavior).

我该如何做到最好，如预期的那样工作，最糟糕的是禁用复选框的双击？
谢谢。

How can I do to at best make it work as exepected, at worst disable the double-click on the checkbox? Thanks.

PS：问题有已被问到，但没有答案...

PS: The question has already been asked, but had no answer...

推荐答案

尝试一下.. :)为我工作

Try this.. :) worked for me

public class NewTreeView : TreeView
    {
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == 0x203)
                m.Result = IntPtr.Zero;
            else
                base.WndProc(ref m);
        }
    }

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