internal ShellItem(ShellBrowser browser, ShellAPI.CSIDL specialFolder)
{
IntPtr pidl = IntPtr.Zero;
ShellAPI.SHGetSpecialFolderLocation(IntPtr.Zero, specialFolder, out pidl);
//
IntPtr shellFolderPtr;
this.browser = browser;
//
if (specialFolder == ShellAPI.CSIDL.DESKTOP)
{
ShellAPI.SHGetDesktopFolder(out shellFolderPtr);
//
this.shellFolderPtr = shellFolderPtr;
this.shellFolder = (IShellFolder)Marshal.GetTypedObjectForIUnknown(shellFolderPtr, typeof(IShellFolder));
}
else
{
this.shellFolder = GetShellFolderFromPidl(pidl, out shellFolderPtr);
//
this.parentItem = browser.DesktopItem;
}
//
subFiles = new ShellItemCollection(this);
subFolders = new ShellItemCollection(this);
pidlRel = new PIDL(pidl, false);
ShellAPI.SHFILEINFO info = new ShellAPI.SHFILEINFO();
ShellAPI.SHGetFileInfo(pidlRel.Ptr, 0, ref info, ShellAPI.cbFileInfo,
ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.TYPENAME | ShellAPI.SHGFI.SYSICONINDEX | ShellAPI.SHGFI.DISPLAYNAME);
type = info.szTypeName;
text = info.szDisplayName;
//
StringBuilder pathBuilder = new StringBuilder(ShellAPI.MAX_PATH);
ShellAPI.SHGetFolderPath(
IntPtr.Zero, specialFolder,
IntPtr.Zero, ShellAPI.SHGFP.TYPE_CURRENT, pathBuilder);
this.path = pathBuilder.ToString();
//
if (specialFolder == ShellAPI.CSIDL.DESKTOP)
{
ShellImageList.SetIconIndex(this, info.iIcon, false);
ShellImageList.SetIconIndex(this, info.iIcon, true);
//
SetAttributesDesktop(this);
}
else
{
SetAttributesFolder(this);
SetInfo(this);
}
sortFlag = 1;
}
static ShellImageList()
{
imageTable = new Hashtable();
ShellAPI.SHGFI flag = ShellAPI.SHGFI.USEFILEATTRIBUTES | ShellAPI.SHGFI.SYSICONINDEX | ShellAPI.SHGFI.SMALLICON;
ShellAPI.SHFILEINFO shfiSmall = new ShellAPI.SHFILEINFO();
smallImageListHandle = ShellAPI.SHGetFileInfo(".txt", ShellAPI.FILE_ATTRIBUTE.NORMAL, ref shfiSmall, ShellAPI.cbFileInfo, flag);
flag = ShellAPI.SHGFI.USEFILEATTRIBUTES | ShellAPI.SHGFI.SYSICONINDEX | ShellAPI.SHGFI.LARGEICON;
ShellAPI.SHFILEINFO shfiLarge = new ShellAPI.SHFILEINFO();
largeImageListHandle = ShellAPI.SHGetFileInfo(".txt", ShellAPI.FILE_ATTRIBUTE.NORMAL, ref shfiLarge, ShellAPI.cbFileInfo, flag);
}
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
ShellAPI.SHGFI dwflag = ShellAPI.SHGFI.SYSICONINDEX | ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.ICON;
ShellAPI.FILE_ATTRIBUTE dwAttr = 0;
//build Key into HashTable for this Item
int Key = index * 256;
if (item.IsLink)
{
Key = Key | 1;
dwflag = dwflag | ShellAPI.SHGFI.LINKOVERLAY;
HasOverlay = true;
}
if (item.IsShared)
{
Key = Key | 2;
dwflag = dwflag | ShellAPI.SHGFI.ADDOVERLAYS;
HasOverlay = true;
}
if (SelectedIcon)
{
Key = Key | 4;
dwflag = dwflag | ShellAPI.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 | ShellAPI.SHGFI.USEFILEATTRIBUTES;
dwAttr = dwAttr | ShellAPI.FILE_ATTRIBUTE.NORMAL;
}
PIDL pidlFull = item.PIDLFull;
ShellAPI.SHFILEINFO shfiSmall = new ShellAPI.SHFILEINFO();
ShellAPI.SHGetFileInfo(pidlFull.Ptr, dwAttr, ref shfiSmall, ShellAPI.cbFileInfo, dwflag | ShellAPI.SHGFI.SMALLICON);
ShellAPI.SHFILEINFO shfiLarge = new ShellAPI.SHFILEINFO();
ShellAPI.SHGetFileInfo(pidlFull.Ptr, dwAttr, ref shfiLarge, ShellAPI.cbFileInfo, dwflag | ShellAPI.SHGFI.LARGEICON);
Marshal.FreeCoTaskMem(pidlFull.Ptr);
lock (imageTable)
{
rVal = ShellAPI.ImageList_ReplaceIcon(smallImageListHandle, -1, shfiSmall.hIcon);
ShellAPI.ImageList_ReplaceIcon(largeImageListHandle, -1, shfiLarge.hIcon);
}
ShellAPI.DestroyIcon(shfiSmall.hIcon);
ShellAPI.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;
ShellAPI.SHFILEINFO info = new ShellAPI.SHFILEINFO();
ShellAPI.SHGetFileInfo(pidlFull.Ptr, 0, ref info, ShellAPI.cbFileInfo,
ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.TYPENAME | ShellAPI.SHGFI.SYSICONINDEX);
pidlFull.Free();
ShellImageList.SetIconIndex(item, info.iIcon, false);
ShellImageList.SetIconIndex(item, info.iIcon, true);
item.type = info.szTypeName;
}
private void InitVars()
{
IntPtr tempPidl;
ShellAPI.SHFILEINFO info;
//My Computer
info = new ShellAPI.SHFILEINFO();
tempPidl = IntPtr.Zero;
ShellAPI.SHGetSpecialFolderLocation(IntPtr.Zero, ShellAPI.CSIDL.DRIVES, out tempPidl);
ShellAPI.SHGetFileInfo(tempPidl, 0, ref info, ShellAPI.cbFileInfo,
ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.DISPLAYNAME | ShellAPI.SHGFI.TYPENAME);
sysfolderName = info.szTypeName;
mycompName = info.szDisplayName;
Marshal.FreeCoTaskMem(tempPidl);
//
//Dekstop
tempPidl = IntPtr.Zero;
desktopItem = new ShellItem(this, ShellAPI.CSIDL.DESKTOP);
desktopItem.Expand(true, true, IntPtr.Zero);
//
myComputerItem = desktopItem.SubFolders[MyComputerName];
//My Documents
uint pchEaten = 0;
ShellAPI.SFGAO pdwAttributes = 0;
desktopItem.ShellFolder.ParseDisplayName(
IntPtr.Zero,
IntPtr.Zero,
"::{450d8fba-ad25-11d0-98a8-0800361b1103}",
ref pchEaten,
out tempPidl,
ref pdwAttributes);
info = new ShellAPI.SHFILEINFO();
ShellAPI.SHGetFileInfo(tempPidl, 0, ref info, ShellAPI.cbFileInfo,
ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.DISPLAYNAME);
mydocsName = info.szDisplayName;
Marshal.FreeCoTaskMem(tempPidl);
StringBuilder path = new StringBuilder(ShellAPI.MAX_PATH);
ShellAPI.SHGetFolderPath(
IntPtr.Zero, ShellAPI.CSIDL.PERSONAL,
IntPtr.Zero, ShellAPI.SHGFP.TYPE_CURRENT, path);
mydocsPath = path.ToString();
//
pchEaten = 0;
pdwAttributes = 0;
desktopItem.ShellFolder.ParseDisplayName(
IntPtr.Zero,
IntPtr.Zero,
"::{645FF040-5081-101B-9F08-00AA002F954E}",
ref pchEaten,
out tempPidl,
ref pdwAttributes);
info = new ShellAPI.SHFILEINFO();
ShellAPI.SHGetFileInfo(tempPidl, 0, ref info, ShellAPI.cbFileInfo,
ShellAPI.SHGFI.PIDL | ShellAPI.SHGFI.DISPLAYNAME);
recycleBinName = info.szDisplayName;
Marshal.FreeCoTaskMem(tempPidl);
}