好吧,我沒有足夠的時間來完成這段代碼(它是在C#中,我不知道是你想要的,但你沒有真正指定)。它的基本前提是在.NET窗體中使用ExplorerBrowser控件(使用WindowsAPICodePack,您需要獲取並添加引用),等待TreeView被創建並創建窗口的子類以允許我們截取項目插入。
不幸的是,沒有什麼是簡單的,文本並沒有給你一個項目是什麼(因爲他們沒有設置它)的直接想法,你需要做的是從insertStruct.lParam
得到PIDL並解析它變成有意義的東西,可能使用IShellFolder
界面。然後你可以有選擇地移除物品(通過返回0作爲m.Result
),你可以攔截任何你需要的東西。你會認爲會有一個簡單的解決方案,但我猜你的運氣不在;)希望它有一點幫助。
另一種方法可能會做類似(主機瀏覽器直接),但使用像detours鉤子註冊表功能,並選擇性地更改瀏覽器控件獲取允許一些註冊表調整工作的視圖。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.WindowsAPICodePack.Shell;
using System.Runtime.InteropServices;
namespace MyExplorer
{
public partial class Form1 : Form
{
const int WH_CALLWNDPROC = 4;
const int WM_CREATE = 1;
public delegate int HookProc(int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
public static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn,
IntPtr hInstance, int threadId);
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
public static extern bool UnhookWindowsHookEx(IntPtr hHook);
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(IntPtr hHook, int nCode,
IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);
IntPtr m_hHook;
HookProc HookDelegate;
struct WindowHookStruct
{
public IntPtr lParam;
public IntPtr wParam;
public uint message;
public IntPtr hwnd;
}
public class SubclassTreeView : NativeWindow
{
const int TV_FIRST = 0x1100;
//const int TVM_INSERTITEMA = (TV_FIRST + 0);
const int TVM_INSERTITEMW = (TV_FIRST + 50);
struct TVINSERTSTRUCTW
{
public IntPtr hParent;
public IntPtr hInsertAfter;
/* TVITEMW */
public uint mask;
public IntPtr hItem;
public uint state;
public uint stateMask;
public IntPtr pszText;
public int cchTextMax;
public int iImage;
public int iSelectedImage;
public int cChildren;
public IntPtr lParam;
}
int count = 0;
protected override void WndProc(ref Message m)
{
bool bHandled = false;
switch (m.Msg)
{
case TVM_INSERTITEMW:
TVINSERTSTRUCTW insertStruct = (TVINSERTSTRUCTW)Marshal.PtrToStructure(m.LParam, typeof(TVINSERTSTRUCTW));
/* Change text to prove a point */
string name = String.Format("{0:X} {1} Hello", insertStruct.hParent.ToInt64(), count++);
insertStruct.pszText = Marshal.StringToBSTR(name);
insertStruct.cchTextMax = name.Length+1;
Marshal.StructureToPtr(insertStruct, m.LParam, false);
/* insertStruct.lParam is a pointer to a IDL,
use IShellFolder::GetDisplayNameOf to pull out a sensible
name to work out what to hide */
/* Uncomment this code to delete the entry */
//bHandled = true;
//m.Result = IntPtr.Zero;
break;
}
if (!bHandled)
{
base.WndProc(ref m);
}
}
}
/* Not complete structure, don't need it */
struct MSG
{
public IntPtr hwnd;
public uint message;
public IntPtr wParam;
public IntPtr lParam;
}
SubclassTreeView sc = null;
public Form1()
{
InitializeComponent();
HookDelegate = new HookProc(HookWindowProc);
m_hHook = SetWindowsHookEx(WH_CALLWNDPROC, HookDelegate, (IntPtr)0, AppDomain.GetCurrentThreadId());
}
int HookWindowProc(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0)
{
return CallNextHookEx(m_hHook, nCode, wParam, lParam);
}
else
{
WindowHookStruct hookInfo = (WindowHookStruct)Marshal.PtrToStructure(lParam, typeof(WindowHookStruct));
StringBuilder sb = new StringBuilder(1024);
if (hookInfo.message == WM_CREATE)
{
if (GetClassName(hookInfo.hwnd, sb, 1024) > 0)
{
System.Diagnostics.Debug.WriteLine(sb.ToString());
if (sb.ToString() == "SysTreeView32")
{
sc = new SubclassTreeView();
sc.AssignHandle(hookInfo.hwnd);
UnhookWindowsHookEx(m_hHook);
}
}
}
return CallNextHookEx(m_hHook, nCode, wParam, lParam);
}
}
private void Form1_Load(object sender, EventArgs e)
{
explorerBrowser1.Navigate(ShellLink.FromParsingName("C:\\"));
}
}
}
也許你可以解釋你爲什麼想要這樣做。我想用戶會討厭它。 – PeteT 2010-02-02 15:21:03
@ petebob796:我使用它,所以我可以打開一個特殊的窗口,顯示我正在處理的任何項目。該程序是我在開始菜單上放置的一個實用程序,用於「以帶有根的視圖啓動文件夾_____」,所以它不像我偷偷摸摸地設置人員。 – 2010-02-02 17:48:30