问题描述
我有一个应用程序，用户可以在表单上拖动控件。但他们
请求我的Snap-To行，使控制的对齐更容易。我不知道snep-to行和如何实现它们 - 我看过：
I have an app where users can drag controls around on a Form. But theyre asking me for Snap-To lines to make the alignment of controls easier. I have no idea about the snep-to lines and how to implement them - I have looked at:
Adorner的，但它说它只适用于WPF 。
http://msdn.microsoft.com/en-us/library/ms752100.aspx Adorner's, but it says it's only for WPF. And I tried it in WinForms but (as expected) didn't work.
如何在我的应用程序中获取snap-to行（类似VS中的行） ？
How can I get snap-to lines (something like the ones in VS) in my app?
谢谢
Bael
推荐答案
在你的移动控制中，你可以分开调整左和顶部乘以你的线宽：
In your move control you could adjust the Left and Top by dividing and then multiplying by the width of your lines:
left = (left/10)*10;
top = (top/10)*10;
这不是完美的，但它很简单。当然，由于控件没有MoveEnd事件，你必须跟踪MouseButton状态或类似的东西。
It's not perfect but it it simple. Of course since controls don't have a MoveEnd event you'll have to track the MouseButton state or something similiar.
编辑：实施将适当地舍入除法结果，因此134 = 130和136 = 140。
A better implementation would properly round the division results so 134 = 130 and 136 = 140.
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