internal ShellItem(ShellBrowserComponent browser, IntPtr pidl, IntPtr shellFolderPtr)
{
this.browser = browser;
this.shellFolderPtr = shellFolderPtr;
this.shellFolder = (IShellFolder)Marshal.GetTypedObjectForIUnknown(shellFolderPtr, typeof(IShellFolder));
subFiles = new ShellItemCollection(this);
subFolders = new ShellItemCollection(this);
pidlRel = new PIDL(pidl, false);
text = "Desktop";
path = "Desktop";
SetAttributesDesktop(this);
NativeShellAPI.SHFILEINFO info = new NativeShellAPI.SHFILEINFO();
NativeShellAPI.SHGetFileInfo(pidlRel.Ptr, 0, ref info, NativeShellAPI.cbFileInfo,
NativeShellAPI.SHGFI.PIDL | NativeShellAPI.SHGFI.TYPENAME | NativeShellAPI.SHGFI.SYSICONINDEX);
type = info.szTypeName;
ShellImageList.SetIconIndex(this, info.iIcon, false);
ShellImageList.SetIconIndex(this, info.iIcon, true);
sortFlag = 1;
}
static ShellImageList()
{
imageTable = new Hashtable();
NativeShellAPI.SHGFI flag = NativeShellAPI.SHGFI.USEFILEATTRIBUTES | NativeShellAPI.SHGFI.SYSICONINDEX | NativeShellAPI.SHGFI.SMALLICON;
NativeShellAPI.SHFILEINFO shfiSmall = new NativeShellAPI.SHFILEINFO();
smallImageListHandle = NativeShellAPI.SHGetFileInfo(".txt", NativeShellAPI.FILE_ATTRIBUTE.NORMAL, ref shfiSmall, NativeShellAPI.cbFileInfo, flag);
flag = NativeShellAPI.SHGFI.USEFILEATTRIBUTES | NativeShellAPI.SHGFI.SYSICONINDEX | NativeShellAPI.SHGFI.LARGEICON;
NativeShellAPI.SHFILEINFO shfiLarge = new NativeShellAPI.SHFILEINFO();
largeImageListHandle = NativeShellAPI.SHGetFileInfo(".txt", NativeShellAPI.FILE_ATTRIBUTE.NORMAL, ref shfiLarge, NativeShellAPI.cbFileInfo, flag);
}
private void InitVars()
{
IntPtr tempPidl;
NativeShellAPI.SHFILEINFO info;
//My Computer
info = new NativeShellAPI.SHFILEINFO();
tempPidl = IntPtr.Zero;
NativeShellAPI.SHGetSpecialFolderLocation(IntPtr.Zero, NativeShellAPI.CSIDL.DRIVES, out tempPidl);
NativeShellAPI.SHGetFileInfo(tempPidl, 0, ref info, NativeShellAPI.cbFileInfo,
NativeShellAPI.SHGFI.PIDL | NativeShellAPI.SHGFI.DISPLAYNAME | NativeShellAPI.SHGFI.TYPENAME);
sysfolderName = info.szTypeName;
mycompName = info.szDisplayName;
Marshal.FreeCoTaskMem(tempPidl);
//
//Dekstop
tempPidl = IntPtr.Zero;
NativeShellAPI.SHGetSpecialFolderLocation(IntPtr.Zero, NativeShellAPI.CSIDL.DESKTOP, out tempPidl);
IntPtr desktopFolderPtr;
NativeShellAPI.SHGetDesktopFolder(out desktopFolderPtr);
desktopItem = new ShellItem(this, tempPidl, desktopFolderPtr);
//
//My Documents
uint pchEaten = 0;
NativeShellAPI.SFGAO pdwAttributes = 0;
desktopItem.ShellFolder.ParseDisplayName(
IntPtr.Zero,
IntPtr.Zero,
"::{450d8fba-ad25-11d0-98a8-0800361b1103}",
ref pchEaten,
out tempPidl,
ref pdwAttributes);
info = new NativeShellAPI.SHFILEINFO();
NativeShellAPI.SHGetFileInfo(tempPidl, 0, ref info, NativeShellAPI.cbFileInfo,
NativeShellAPI.SHGFI.PIDL | NativeShellAPI.SHGFI.DISPLAYNAME);
mydocsName = info.szDisplayName;
Marshal.FreeCoTaskMem(tempPidl);
StringBuilder path = new StringBuilder(NativeShellAPI.MAX_PATH);
NativeShellAPI.SHGetFolderPath(
IntPtr.Zero, NativeShellAPI.CSIDL.PERSONAL,
IntPtr.Zero, NativeShellAPI.SHGFP.TYPE_CURRENT, path);
mydocsPath = path.ToString();
//
}
internal static void SetIconIndex(ShellItem item, int index, bool SelectedIcon)
{
bool HasOverlay = false; //true if it's an overlay
int rVal = 0; //The returned Index
NativeShellAPI.SHGFI dwflag = NativeShellAPI.SHGFI.SYSICONINDEX | NativeShellAPI.SHGFI.PIDL | NativeShellAPI.SHGFI.ICON;
NativeShellAPI.FILE_ATTRIBUTE dwAttr = 0;
//build Key into HashTable for this Item
int Key = index * 256;
if (item.IsLink)
{
Key = Key | 1;
dwflag = dwflag | NativeShellAPI.SHGFI.LINKOVERLAY;
HasOverlay = true;
}
if (item.IsShared)
{
Key = Key | 2;
dwflag = dwflag | NativeShellAPI.SHGFI.ADDOVERLAYS;
HasOverlay = true;
}
if (SelectedIcon)
{
Key = Key | 4;
dwflag = dwflag | NativeShellAPI.SHGFI.OPENICON;
HasOverlay = true; //not really an overlay, but handled the same
}
if (imageTable.ContainsKey(Key))
{
rVal = (int)imageTable[Key];
}
else if (!HasOverlay && !item.IsHidden) //for non-overlay icons, we already have
{
rVal = (int)System.Math.Floor((double)Key / 256); // the right index -- put in table
imageTable[Key] = rVal;
}
else //don't have iconindex for an overlay, get it.
{
if (item.IsFileSystem & !item.IsDisk & !item.IsFolder)
{
dwflag = dwflag | NativeShellAPI.SHGFI.USEFILEATTRIBUTES;
dwAttr = dwAttr | NativeShellAPI.FILE_ATTRIBUTE.NORMAL;
}
PIDL pidlFull = item.PIDLFull;
NativeShellAPI.SHFILEINFO shfiSmall = new NativeShellAPI.SHFILEINFO();
NativeShellAPI.SHGetFileInfo(pidlFull.Ptr, dwAttr, ref shfiSmall, NativeShellAPI.cbFileInfo, dwflag | NativeShellAPI.SHGFI.SMALLICON);
NativeShellAPI.SHFILEINFO shfiLarge = new NativeShellAPI.SHFILEINFO();
NativeShellAPI.SHGetFileInfo(pidlFull.Ptr, dwAttr, ref shfiLarge, NativeShellAPI.cbFileInfo, dwflag | NativeShellAPI.SHGFI.LARGEICON);
Marshal.FreeCoTaskMem(pidlFull.Ptr);
lock (imageTable)
{
rVal = NativeShellAPI.ImageList_ReplaceIcon(smallImageListHandle, -1, shfiSmall.hIcon);
NativeShellAPI.ImageList_ReplaceIcon(largeImageListHandle, -1, shfiLarge.hIcon);
}
NativeShellAPI.DestroyIcon(shfiSmall.hIcon);
NativeShellAPI.DestroyIcon(shfiLarge.hIcon);
imageTable[Key] = rVal;
}
if (SelectedIcon)
item.SelectedImageIndex = rVal;
else
item.ImageIndex = rVal;
}
private static void SetInfo(ShellItem item)
{
PIDL pidlFull = item.PIDLFull;
NativeShellAPI.SHFILEINFO info = new NativeShellAPI.SHFILEINFO();
NativeShellAPI.SHGetFileInfo(pidlFull.Ptr, 0, ref info, NativeShellAPI.cbFileInfo,
NativeShellAPI.SHGFI.PIDL | NativeShellAPI.SHGFI.TYPENAME | NativeShellAPI.SHGFI.SYSICONINDEX);
pidlFull.Free();
ShellImageList.SetIconIndex(item, info.iIcon, false);
ShellImageList.SetIconIndex(item, info.iIcon, true);
item.type = info.szTypeName;
}
/// <summary>
/// This method uses SHGetFileInfo to check whether a path to a directory exists.
/// </summary>
/// <param name="path">The path to check</param>
/// <returns>true if it exists, false otherwise</returns>
private bool PathExists(string path)
{
string realPath = ConvertPath(path);
if (string.IsNullOrEmpty(realPath))
return false;
else if (string.Compare(path, "desktop", true) == 0)
return true;
string[] pathParts = realPath.Split('\\');
for (int i = 0; i < pathParts.Length; i++)
{
bool found = false;
if (ShellBrowserComponent.DesktopItem.SubFolders.Contains(pathParts[i]))
{
pathParts[i] = ShellItem.GetRealPath(
ShellBrowserComponent.DesktopItem.SubFolders[pathParts[i]]);
found = true;
}
else
{
ShellItem myComp =
ShellBrowserComponent.DesktopItem.SubFolders[ShellBrowserComponent.MyComputerName];
if (myComp.SubFolders.Contains(pathParts[i]))
{
pathParts[i] = ShellItem.GetRealPath(
myComp.SubFolders[pathParts[i]]);
found = true;
}
}
if (!found)
break;
}
realPath = string.Join("\\", pathParts);
if (realPath.EndsWith(":"))
realPath += "\\";
NativeShellAPI.SHFILEINFO info = new NativeShellAPI.SHFILEINFO();
IntPtr ptr = NativeShellAPI.SHGetFileInfo(realPath, 0, ref info, NativeShellAPI.cbFileInfo, NativeShellAPI.SHGFI.DISPLAYNAME);
bool exists = (ptr != IntPtr.Zero);
Marshal.FreeCoTaskMem(ptr);
return exists;
}