将自定义上下文菜单项添加到Windows窗体标题栏中 [英] Adding a custom context menu item to Windows Form title bar
本文介绍了将自定义上下文菜单项添加到Windows窗体标题栏中的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我找到了 MSDN上的线程,其中显示了如何将项目添加到winform标题栏的上下文菜单中.不幸的是,它没有显示如何使用自定义菜单项注册事件,而且我一直无法弄清楚该怎么做.下面是一个示例应用程序,可以将其复制并粘贴到新的Windows窗体应用程序中.如果有人可以为我完成示例,我将不胜感激.谢谢
I found a thread on MSDN that shows how to add an item to the context menu of a winform title bar. Unfortunately it does not show how to register an event with the custom menu item and I have been unable to figure out how to do it. Below is a sample app that can be copied and pasted into a new Windows Forms Application. I would appreciate it if someone could complete the sample for me. Thanks
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
IntPtr hMenu = GetSystemMenu(Handle, false);
if (hMenu != IntPtr.Zero)
{
var menuInfo = new MENUITEMINFO
{
cbSize = (uint) Marshal.SizeOf(typeof (MENUITEMINFO)),
cch = 255,
dwTypeData = "Test Item",
fMask = 0x1 | 0x2 | 0x10,
fState = 0,
fType = 0x0
};
InsertMenuItem(hMenu, 0, true, ref menuInfo);
DrawMenuBar(Handle);
}
}
[DllImport("user32.dll")]
static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);
[DllImport("user32.dll")]
static extern bool DrawMenuBar(IntPtr hWnd);
[DllImport("user32.dll")]
static extern bool InsertMenuItem(IntPtr hMenu, uint uItem,
bool fByPosition, [In] ref MENUITEMINFO lpmii);
[StructLayout(LayoutKind.Sequential)]
public struct MENUITEMINFO
{
public uint cbSize;
public uint fMask;
public uint fType;
public uint fState;
public uint wID;
public IntPtr hSubMenu;
public IntPtr hbmpChecked;
public IntPtr hbmpUnchecked;
public IntPtr dwItemData;
public string dwTypeData;
public uint cch;
public IntPtr hbmpItem;
}
}
}
推荐答案
You must override WndProc Method and intercept the id of your new menu.
尝试
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace WindowsFormsApplication11
{
public partial class Form1 : Form
{
public const Int32 WM_SYSCOMMAND = 0x112;
public const Int32 MF_BYPOSITION = 0x400;
public const Int32 MYMENU1 = 1000;
public const Int32 MUMENU2 = 1001;
[DllImport("user32.dll")]
private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);
[DllImport("user32.dll")]
private static extern bool InsertMenu(IntPtr hMenu,Int32 wPosition, Int32 wFlags, Int32 wIDNewItem,string lpNewItem);
public Form1()
{
InitializeComponent();
}
protected override void WndProc(ref Message msg)
{
if (msg.Msg == WM_SYSCOMMAND)
{
switch (msg.WParam.ToInt32())
{
case MYMENU1:
MessageBox.Show("Hi from My Menu 1¡¡¡¡");
return;
case MUMENU2:
MessageBox.Show("Hi from My Menu 2¡¡¡¡");
return;
default:
break;
}
}
base.WndProc(ref msg);
}
private void Form1_Load(object sender, EventArgs e)
{
IntPtr MenuHandle = GetSystemMenu(this.Handle, false);
InsertMenu(MenuHandle, 5, MF_BYPOSITION, MYMENU1, "My Menu 1");
InsertMenu(MenuHandle, 6, MF_BYPOSITION, MUMENU2, "My Menu 2");
}
}
}
这篇关于将自定义上下文菜单项添加到Windows窗体标题栏中的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文