拦截SetChildIndex的值更改 [英] Intercepting the value change of SetChildIndex

问题描述

在.NET CF表单中，我有多个面板.我想拥有一个属性，该属性应该始终被告知面板是否在前面.

In a .NET CF-form i have multiple panels. I want to have a property that should always be informed about if a panel is in the front.

可以使用GetChildIndex()方法完成此操作吗?

Can this be done using the GetChildIndex() method?

如果是，我如何拦截对SetChildIndex()的更改?

If yes, how do i intercept the change to SetChildIndex()?

预先感谢

推荐答案

对于每个对将来使用感兴趣的人:

For everybody who is interested for future use:

只需为每个面板的Paint事件添加一个新的事件处理程序，例如:

simply add a new event handler for the Paint event of each panel, for example:

panel1.Paint += new PaintEventHandler(panel1_Paint);
panel2.Paint += new PaintEventHandler(panel2_Paint);

，并且在每个事件处理程序中只需调用一个Method即可检索所有面板的状态，如下所示:

and in each of the event handlers just call a Method which retrieves the state of all the panels like so:

void panel2_Paint(object sender, PaintEventArgs e)
        {
            GetPanelStates();

        }

        void panel1_Paint(object sender, PaintEventArgs e)
        {
            GetPanelStates();
        }



        void GetPanelStates()
        {
            Panel2IsInFront = panel2.Parent.Controls.GetChildIndex(panel2) == 0;
            Panel1IsInFront = panel1.Parent.Controls.GetChildIndex(panel1) == 0;
        }

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