public static int compareIDs(Object pParentIShellFolder, IntPtr pidl1, IntPtr pidl2)
{
if (pParentIShellFolder == null)
{
return(0);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)pParentIShellFolder;
return(folder.CompareIDs(0, pidl1, pidl2));
}
/// <summary>
/// Returns an IShellFolder for the desktop
/// </summary>
public static Object initDesktopFolder()
{
ShellApi.IShellFolder rootShell = null;
// get the root shell folder
ShellApi.SHGetDesktopFolder(ref rootShell);
return(rootShell);
}
public static Object bindToObject(Object parentIShellFolder, IntPtr pIDL)
{
if (parentIShellFolder == null || pIDL == IntPtr.Zero)
{
return(null);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)parentIShellFolder;
ShellApi.IShellFolder newFolder = null;
folder.BindToObject(pIDL, IntPtr.Zero, ref ShellApi.GUID_ISHELLFOLDER, out newFolder);
return(newFolder);
}
public static int getAttributes0(Object pParentIShellFolder, IntPtr pIDL, int attrsMask)
{
if (pParentIShellFolder == null || pIDL == IntPtr.Zero)
{
return(0);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)pParentIShellFolder;
ShellApi.SFGAOF[] atts = new ShellApi.SFGAOF[] { (ShellApi.SFGAOF)attrsMask };
IntPtr[] pIDLs = new IntPtr[] { pIDL };
folder.GetAttributesOf(1, pIDLs, atts);
return((int)atts[0]);
}
/// <summary>
/// Parses the displayname of a child of a given folder
/// </summary>
/// <param name="pIShellFolder">The IShellFolder to get the chilf of</param>
/// <param name="name">The display name of the child</param>
/// <returns>the relative pIDL of the child or IntPrt.Zero in case there is no such child</returns>
public static IntPtr parseDisplayName0(Object pIShellFolder, String name)
{
if (pIShellFolder == null)
{
return(IntPtr.Zero);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)pIShellFolder;
IntPtr pIDL = new IntPtr();
uint pchEaten;
uint pdwAttribute = 0;
folder.ParseDisplayName(IntPtr.Zero, IntPtr.Zero, name, out pchEaten, out pIDL, ref pdwAttribute);
return(pIDL);
}
/// <summary>
/// Creates an IShellFolder for a special folder
/// </summary>
/// <param name="desktopIShellFolder">The IShellFolder instance of the Desktop</param>
/// <param name="pidl">The desktop relative pIDL of the special folder</param>
/// <returns>The IShellFolder for a special folder</returns>
public static Object initSpecialFolder(Object desktopIShellFolder, IntPtr pidl)
{
try
{
// get desktop instance
ShellApi.IShellFolder desktop = (ShellApi.IShellFolder)desktopIShellFolder;
// call BindToObject of the desktop
ShellApi.IShellFolder specialFolder = null;
desktop.BindToObject(pidl, IntPtr.Zero, ref ShellApi.GUID_ISHELLFOLDER, out specialFolder);
return(specialFolder);
}
catch (System.ArgumentException)
{
return(0);
}
}
public static Object getEnumObjects(Object pIShellFolder, Boolean isDesktop, Boolean includeHiddenFiles)
{
if (pIShellFolder == null)
{
return(null);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)pIShellFolder;
ShellApi.SHCONTF flags = ShellApi.SHCONTF.SHCONTF_FOLDERS | ShellApi.SHCONTF.SHCONTF_NONFOLDERS;
if (includeHiddenFiles)
{
flags |= ShellApi.SHCONTF.SHCONTF_INCLUDEHIDDEN;
}
ShellApi.IEnumIDList list = null;
folder.EnumObjects(IntPtr.Zero, flags, out list);
return(list);
}
public static String getDisplayNameOf(Object parentIShellFolder, IntPtr relativePIDL, int attrs)
{
if (parentIShellFolder == null || relativePIDL == IntPtr.Zero)
{
return(null);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)parentIShellFolder;
ShellApi.STRRET result;
uint hRes = folder.GetDisplayNameOf(relativePIDL, (ShellApi.SHGDN)attrs, out result);
if (hRes == 0)
{
StringBuilder name = new StringBuilder(1024);
StrRetToBuf(ref result, relativePIDL, name, 1024);
string stringName = name.ToString();
return(stringName);
}
return(null);
}
public static IntPtr extractIcon(Object parentIShellFolder, IntPtr relativePIDL, Boolean getLargeIcon)
{
if (parentIShellFolder == null || relativePIDL == IntPtr.Zero)
{
return(IntPtr.Zero);
}
ShellApi.IShellFolder folder = (ShellApi.IShellFolder)parentIShellFolder;
Guid guid = new Guid("000214fa-0000-0000-c000-000000000046");
object ppv;
if (folder.GetUIObjectOf(IntPtr.Zero, 1, new IntPtr[] { relativePIDL }, ref guid, IntPtr.Zero, out ppv) == 0)
{
ShellApi.IExtractIcon extractor = (ShellApi.IExtractIcon)ppv;
int size = 1024;
StringBuilder path = new StringBuilder(size);
int piIndex;
uint pwFlags;
if (extractor.GetIconLocation((uint)ShellApi.GIL.GIL_FORSHELL, path, size, out piIndex, out pwFlags) == 0)
{
IntPtr hIconL = new IntPtr();
IntPtr hIconS = new IntPtr();
if (extractor.Extract(path.ToString(), (uint)piIndex, out hIconL, out hIconS, (16 << 16) + 32) == 0)
{
if (getLargeIcon)
{
ShellApi.DestroyIcon(hIconS);
return(hIconL);
}
else
{
ShellApi.DestroyIcon(hIconL);
return(hIconS);
}
}
}
}
return(IntPtr.Zero);
}