将拖动行为添加到FormBorderStyle设置为None的表单中 [英] Add drag behavior to a form with FormBorderStyle set to None

问题描述

可能重复：

C＃-使无边界表单可移动吗？

如果我将表单的 FormBorderStyle 设置为 None ，则会丢失表单的拖动行为，这与预期的一样。

If I set my form's FormBorderStyle to None, I lose the drag behavior of the form, as expected.

我在表单顶部添加了一个自定义栏，我希望它保持这种状态，现在可以将表单保持在此模式下并具有（或写入）拖动行为？

I've added a custom bar to the top of my form and I like it to stay that way, now is it possible to keep the form in this mode and have (or write) drag behavior?

如果可能的话，我应该怎么做。我真的希望找到一个是的，可能的答案。：）

If it's possible, how should I do so. I really hope to find a Yes it's possible answer. :)

推荐答案

private const Int32 WM_NCHITTEST = 0x84;
private const Int32 HTCLIENT = 0x1;
private const Int32 HTCAPTION = 0x2;

protected override void WndProc(ref Message m)
{
    if (m.Msg == WM_NCHITTEST)
    {
        base.WndProc(ref m);

        if ((Int32)m.Result == HTCLIENT)
            m.Result = (IntPtr)HTCAPTION;

        return;
    }

    base.WndProc(ref m);
}

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