实例介绍
【实例简介】windows资源管理器
【实例截图】
【核心代码】
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;
using WinShell;
namespace Sample5
{
public partial class simple5 : Form
{
private IShellFolder iDeskTop;
private static IntPtr m_ipSmallSystemImageList;
private static IntPtr m_ipLargeSystemImageList;
public simple5()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//获取系统 ImageList
SHFILEINFO shfi = new SHFILEINFO();
m_ipSmallSystemImageList = API.SHGetFileInfo("", 0, out shfi, Marshal.SizeOf(typeof(SHFILEINFO)),
SHGFI.SYSICONINDEX | SHGFI.SMALLICON | SHGFI.USEFILEATTRIBUTES);
m_ipLargeSystemImageList = API.SHGetFileInfo("", 0, out shfi, Marshal.SizeOf(typeof(SHFILEINFO)),
SHGFI.SYSICONINDEX | SHGFI.LARGEICON | SHGFI.USEFILEATTRIBUTES);
//把系统 ImageList 关联到 TreeView 和 ListView
API.SendMessage(Tree1.Handle, API.TVM_SETIMAGELIST, API.TVSIL_NORMAL, m_ipSmallSystemImageList);
API.SendMessage(lvFile.Handle, API.LVM_SETIMAGELIST, API.LVSIL_NORMAL, m_ipLargeSystemImageList);
//获得桌面 PIDL
IntPtr deskTopPtr;
iDeskTop = API.GetDesktopFolder(out deskTopPtr);
API.SHGetSpecialFolderLocation(IntPtr.Zero, CSIDL.DESKTOP, out deskTopPtr);
//添加 桌面 节点
int imgIndex = API.GetSmallIconIndex(deskTopPtr);
TreeNode tnDesktop = new TreeNode("桌面", imgIndex, imgIndex);
tnDesktop.Tag = new ShellItem(deskTopPtr, iDeskTop);
tnDesktop.Nodes.Add("...");
//把节点添加到树中
Tree1.Nodes.Add(tnDesktop);
Tree1.SelectedNode = tnDesktop;
tnDesktop.Expand();
}
private void Tree1_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
#region 判断节点是否已经展开
if (e.Node.Nodes.Count != 1)
{
return;
}
else
{
if (e.Node.FirstNode.Text != "...")
{
return;
}
}
e.Node.Nodes.Clear();
#endregion
ShellItem sItem = (ShellItem)e.Node.Tag;
IShellFolder root = sItem.ShellFolder;
//循环查找子项
IEnumIDList Enum = null;
IntPtr EnumPtr = IntPtr.Zero;
IntPtr pidlSub;
int celtFetched;
if (root.EnumObjects(this.Handle, SHCONTF.FOLDERS | SHCONTF.INCLUDEHIDDEN, out EnumPtr) == API.S_OK)
{
Enum = (IEnumIDList)Marshal.GetObjectForIUnknown(EnumPtr);
while (Enum.Next(1, out pidlSub, out celtFetched) == 0 && celtFetched == API.S_FALSE)
{
string name = API.GetNameByIShell(root, pidlSub);
IShellFolder iSub;
root.BindToObject(pidlSub, IntPtr.Zero, ref Guids.IID_IShellFolder, out iSub);
ShellItem shellItem=new ShellItem(pidlSub, iSub, sItem);
int imgIndex = API.GetSmallIconIndex(shellItem.PIDLFull.Ptr);
TreeNode nodeSub = new TreeNode(name, imgIndex, imgIndex);
nodeSub.Tag = shellItem;
nodeSub.Nodes.Add("...");
e.Node.Nodes.Add(nodeSub);
}
}
}
private void FillListView(ShellItem sItem)
{
IShellFolder root = sItem.ShellFolder;
lvFile.Items.Clear();
//循环查找子项
IEnumIDList Enum = null;
IntPtr EnumPtr = IntPtr.Zero;
IntPtr pidlSub;
int celtFetched;
if (root.EnumObjects(this.Handle, SHCONTF.FOLDERS | SHCONTF.INCLUDEHIDDEN, out EnumPtr) == API.S_OK)
{
Enum = (IEnumIDList)Marshal.GetObjectForIUnknown(EnumPtr);
while (Enum.Next(1, out pidlSub, out celtFetched) == 0 && celtFetched == API.S_FALSE)
{
string name = API.GetNameByIShell(root, pidlSub);
ShellItem shellItem = new ShellItem(pidlSub, null, sItem);
ListViewItem item = new ListViewItem(name,
API.GetLargeIconIndex(shellItem.PIDLFull.Ptr));
item.Tag = shellItem;
lvFile.Items.Add(item);
}
}
if (root.EnumObjects(this.Handle, SHCONTF.NONFOLDERS | SHCONTF.INCLUDEHIDDEN, out EnumPtr) == API.S_OK)
{
Enum = (IEnumIDList)Marshal.GetObjectForIUnknown(EnumPtr);
while (Enum.Next(1, out pidlSub, out celtFetched) == 0 && celtFetched == API.S_FALSE)
{
SFGAO attribs = SFGAO.FOLDER;
root.GetAttributesOf(1, new IntPtr[] { pidlSub }, ref attribs);
if ((attribs & SFGAO.FOLDER) == 0)
{
string name = API.GetNameByIShell(root, pidlSub);
string path = API.GetPathByIShell(root, pidlSub);
ShellItem shellItem = new ShellItem(pidlSub, null, sItem);
ListViewItem item = new ListViewItem(name,
API.GetLargeIconIndex(shellItem.PIDLFull.Ptr));
item.Tag = shellItem;
lvFile.Items.Add(item);
}
}
}
lvFile.Sort();
}
private void Tree1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
Tree1.SelectedNode = Tree1.GetNodeAt(e.X, e.Y);
}
}
private void Tree1_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
if (Tree1.SelectedNode != null)
{
//获得当前节点的 PIDL
ShellItem sItem = (ShellItem)Tree1.SelectedNode.Tag;
IntPtr PIDL = sItem.PIDL;
//获得父节点的 IShellFolder 接口
IShellFolder IParent = iDeskTop;
if (Tree1.SelectedNode.Parent != null)
{
IParent = ((ShellItem)Tree1.SelectedNode.Parent.Tag).ShellFolder;
}
else
{
//桌面的真实路径的 PIDL
string path = API.GetSpecialFolderPath(this.Handle, ShellSpecialFolders.DESKTOPDIRECTORY);
API.GetShellFolder(iDeskTop, path, out PIDL);
}
//存放 PIDL 的数组
IntPtr[] pidls = new IntPtr[1];
pidls[0] = PIDL;
//得到 IContextMenu 接口
IntPtr iContextMenuPtr = IntPtr.Zero;
iContextMenuPtr = IParent.GetUIObjectOf(IntPtr.Zero, (uint)pidls.Length,
pidls, ref Guids.IID_IContextMenu, out iContextMenuPtr);
IContextMenu iContextMenu = (IContextMenu)Marshal.GetObjectForIUnknown(iContextMenuPtr);
//提供一个弹出式菜单的句柄
IntPtr contextMenu = API.CreatePopupMenu();
iContextMenu.QueryContextMenu(contextMenu, 0,
API.CMD_FIRST, API.CMD_LAST, CMF.NORMAL | CMF.EXPLORE);
/////////////////////////增加一个自定义菜单
string topInvoke = Tree1.SelectedNode.IsExpanded ? "折叠(&A)" : "展开(&A)";
MFT extraFlag = (Tree1.SelectedNode.Nodes.Count > 0) ? 0 : MFT.GRAYED;
API.InsertMenu(contextMenu, 0, MFT.BYPOSITION | extraFlag,
(int)(API.CMD_LAST 1), topInvoke);
//增加分隔线
API.InsertMenu(contextMenu, 1, MFT.BYPOSITION | MFT.SEPARATOR, 0, "-");
//把第一项菜单设置为默认菜单，也就是加粗
API.SetMenuDefaultItem(contextMenu, 0, true);
/////////////////////////
//弹出菜单
uint cmd = API.TrackPopupMenuEx(contextMenu, TPM.RETURNCMD,
MousePosition.X, MousePosition.Y, this.Handle, IntPtr.Zero);
//获取命令序号，执行菜单命令
if (cmd >= API.CMD_FIRST)
{
CMINVOKECOMMANDINFOEX invoke = new CMINVOKECOMMANDINFOEX();
invoke.cbSize = Marshal.SizeOf(typeof(CMINVOKECOMMANDINFOEX));
invoke.lpVerb = (IntPtr)(cmd - 1);
invoke.lpDirectory = string.Empty;
invoke.fMask = 0;
invoke.ptInvoke = new POINT(MousePosition.X, MousePosition.Y);
invoke.nShow = 1;
iContextMenu.InvokeCommand(ref invoke);
//自定义菜单命令
if (cmd == API.CMD_LAST 1)
{
if (Tree1.SelectedNode.IsExpanded)
Tree1.SelectedNode.Collapse();
else
Tree1.SelectedNode.Expand();
}
}
}
}
}
private void Sample5_FormClosing(object sender, FormClosingEventArgs e)
{
Marshal.ReleaseComObject(iDeskTop);
}
private void Tree1_AfterSelect(object sender, TreeViewEventArgs e)
{
//填充 ListView
ShellItem sItem = (ShellItem)e.Node.Tag;
FillListView(sItem);
e.Node.Expand();
}
private void lvFile_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
if (lvFile.SelectedItems.Count>0)
{
//获得父节点的 IShellFolder 接口
IShellFolder IParent = ((ShellItem)Tree1.SelectedNode.Tag).ShellFolder;
//存放 PIDL 的数组
IntPtr[] pidls = new IntPtr[lvFile.SelectedItems.Count];
for (int i = 0; i < lvFile.SelectedItems.Count; i )
{
pidls[i] = ((ShellItem)lvFile.SelectedItems[i].Tag).PIDL;
}
//得到 IContextMenu 接口
IntPtr iContextMenuPtr = IntPtr.Zero;
iContextMenuPtr = IParent.GetUIObjectOf(IntPtr.Zero, (uint)pidls.Length,
pidls, ref Guids.IID_IContextMenu, out iContextMenuPtr);
IContextMenu iContextMenu = (IContextMenu)Marshal.GetObjectForIUnknown(iContextMenuPtr);
//提供一个弹出式菜单的句柄
IntPtr contextMenu = API.CreatePopupMenu();
iContextMenu.QueryContextMenu(contextMenu, 0,
API.CMD_FIRST, API.CMD_LAST, CMF.NORMAL | CMF.EXPLORE);
//弹出菜单
uint cmd = API.TrackPopupMenuEx(contextMenu, TPM.RETURNCMD,
MousePosition.X, MousePosition.Y, this.Handle, IntPtr.Zero);
//获取命令序号，执行菜单命令
if (cmd >= API.CMD_FIRST)
{
CMINVOKECOMMANDINFOEX invoke = new CMINVOKECOMMANDINFOEX();
invoke.cbSize = Marshal.SizeOf(typeof(CMINVOKECOMMANDINFOEX));
invoke.lpVerb = (IntPtr)(cmd - 1);
invoke.lpDirectory = string.Empty;
invoke.fMask = 0;
invoke.ptInvoke = new POINT(MousePosition.X, MousePosition.Y);
invoke.nShow = 1;
iContextMenu.InvokeCommand(ref invoke);
}
}
}
}
private void lvFile_DoubleClick(object sender, EventArgs e)
{
if (lvFile.SelectedItems.Count == 0)
{
return;
}
//获得父节点的 IShellFolder 接口
IShellFolder IParent = ((ShellItem)Tree1.SelectedNode.Tag).ShellFolder;
IntPtr pidl = ((ShellItem)lvFile.SelectedItems[0].Tag).PIDL;
foreach (TreeNode node in Tree1.SelectedNode.Nodes)
{
if (API.ILIsEqual(pidl, ((ShellItem)node.Tag).PIDL))
{
Tree1.SelectedNode = node;
node.Expand();
return;
}
}
//存放 PIDL 的数组
IntPtr[] pidls = new IntPtr[1];
pidls[0] = pidl;
//得到 IContextMenu 接口
IntPtr iContextMenuPtr = IntPtr.Zero;
iContextMenuPtr = IParent.GetUIObjectOf(IntPtr.Zero, (uint)pidls.Length,
pidls, ref Guids.IID_IContextMenu, out iContextMenuPtr);
IContextMenu iContextMenu = (IContextMenu)Marshal.GetObjectForIUnknown(iContextMenuPtr);
//提供一个弹出式菜单的句柄
IntPtr contextMenu = API.CreatePopupMenu();
iContextMenu.QueryContextMenu(contextMenu, 0,
API.CMD_FIRST, API.CMD_LAST, CMF.NORMAL | CMF.EXPLORE);
//获取默认的命令项
int defaultCommand = API.GetMenuDefaultItem(contextMenu, false, 0);
CMINVOKECOMMANDINFOEX invoke = new CMINVOKECOMMANDINFOEX();
invoke.cbSize = Marshal.SizeOf(typeof(CMINVOKECOMMANDINFOEX));
invoke.lpVerb = (IntPtr)(defaultCommand - API.CMD_FIRST);
invoke.lpDirectory = string.Empty;
invoke.fMask = 0;
invoke.ptInvoke = new POINT(MousePosition.X, MousePosition.Y);
invoke.nShow = 1;
iContextMenu.InvokeCommand(ref invoke);
}
}
}
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