如何处理窗体标题右击 [英] How to handle Form caption right click

问题描述

我想标题栏的上下文菜单右键点击

I'd like a context menu on the caption bar right click

任何提示/样品PREF在C＃？

any tips/samples pref in c# ?

更新 - 由于种种原因，右键单击窗体上不会起作用，因为形式是不是空的形式动态合成左右....

UPDATE - for various reasons, right click on the form won't work because the form is not empty and the form is composited dynamically so....

推荐答案

您可以通过捕获该Windows发送当用户右键单击标题栏中的WM_NCRBUTTONDOWN通知做到这一点。控制类没有一个事件，你需要重写的WndProc（）。这里有一个例子形式，你需要添加的ContextMenuStrip：

You can do this by trapping the WM_NCRBUTTONDOWN notification that Windows sends when the user right-clicks the title bar. The control class does not have an event for it, you'll need to override WndProc(). Here's an example form, you'll need to add a ContextMenuStrip:

public partial class Form1 : Form {
    public Form1() {
        InitializeComponent();
    }
    protected void OnTitlebarClick(Point pos) {
        contextMenuStrip1.Show(pos);
    }
    protected override void WndProc(ref Message m) {
        if (m.Msg == 0xa4) {  // Trap WM_NCRBUTTONDOWN
            Point pos = new Point(m.LParam.ToInt32() & 0xffff, m.LParam.ToInt32() >> 16);
            OnTitlebarClick(pos);
            return;
        }
        base.WndProc(ref m);
    }
}

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