public static string GetPidlDisplayName(IntPtr pidl)
{
SHFILEINFO fileInfo = new SHFILEINFO();
Shell32.SHGetFileInfo(pidl, 0, out fileInfo, (uint)Marshal.SizeOf(fileInfo), SHGFI.SHGFI_PIDL | SHGFI.SHGFI_DISPLAYNAME);
return fileInfo.szDisplayName;
}
public static extern IntPtr SHGetFileInfo(IntPtr pszPath, uint dwFileAttribs, out SHFILEINFO psfi, uint cbFileInfo, SHGFI uFlags);
/// <summary>
/// Creates the desktop shell folder.
/// </summary>
/// <returns>The desktop shell folder.</returns>
private static ShellItem CreateDesktopShellFolder()
{
// Get the desktop shell folder interface.
IShellFolder desktopShellFolderInterface = null;
var result = Shell32.SHGetDesktopFolder(out desktopShellFolderInterface);
// Validate the result.
if (result != 0)
{
// Throw the failure as an exception.
Marshal.ThrowExceptionForHR(result);
}
// Get the dekstop PDIL.
var desktopPIDL = IntPtr.Zero;
result = Shell32.SHGetSpecialFolderLocation(IntPtr.Zero, CSIDL.CSIDL_DESKTOP, ref desktopPIDL);
// Validate the result.
if (result != 0)
{
// Throw the failure as an exception.
Marshal.ThrowExceptionForHR(result);
}
// Get the file info.
var fileInfo = new SHFILEINFO();
Shell32.SHGetFileInfo(desktopPIDL, 0, out fileInfo, (uint)Marshal.SizeOf(fileInfo),
SHGFI.SHGFI_DISPLAYNAME | SHGFI.SHGFI_PIDL | SHGFI.SHGFI_SMALLICON | SHGFI.SHGFI_SYSICONINDEX);
// Return the Shell Folder.
return new ShellItem
{
DisplayName = fileInfo.szDisplayName,
IconIndex = fileInfo.iIcon,
HasSubFolders = true,
IsFolder = true,
ShellFolderInterface = desktopShellFolderInterface,
PIDL = desktopPIDL,
RelativePIDL = desktopPIDL
};
}
/// <summary>
/// Initialises the ShellItem, from its PIDL and parent.
/// </summary>
/// <param name="pidl">The pidl.</param>
/// <param name="parentFolder">The parent folder.</param>
private void Initialise(IntPtr pidl, ShellItem parentFolder)
{
// Set the parent item and relative pidl.
ParentItem = parentFolder;
RelativePIDL = pidl;
// Create the fully qualified PIDL.
PIDL = Shell32.ILCombine(parentFolder.PIDL, pidl);
// Use the desktop folder to get attributes.
var flags = SFGAO.SFGAO_FOLDER | SFGAO.SFGAO_HASSUBFOLDER | SFGAO.SFGAO_BROWSABLE | SFGAO.SFGAO_FILESYSTEM;
//todo was this parentFolder.ShellFolderInterface.GetAttributesOf(1, ref pidl, ref flags);
var apidl = Marshal.AllocCoTaskMem(IntPtr.Size*1);
Marshal.Copy(new IntPtr[] {pidl}, 0, apidl, 1);
parentFolder.ShellFolderInterface.GetAttributesOf(1, apidl, ref flags);
IsFolder = (flags & SFGAO.SFGAO_FOLDER) != 0;
HasSubFolders = (flags & SFGAO.SFGAO_HASSUBFOLDER) != 0;
// Get the file info.
var fileInfo = new SHFILEINFO();
Shell32.SHGetFileInfo(PIDL, 0, out fileInfo, (uint)Marshal.SizeOf(fileInfo),
SHGFI.SHGFI_SMALLICON | SHGFI.SHGFI_SYSICONINDEX | SHGFI.SHGFI_PIDL | SHGFI.SHGFI_DISPLAYNAME | SHGFI.SHGFI_ATTRIBUTES);
// Set extended attributes.
DisplayName = fileInfo.szDisplayName;
Attributes = (SFGAO)fileInfo.dwAttributes;
TypeName = fileInfo.szTypeName;
IconIndex = fileInfo.iIcon;
// Are we a folder?
if (IsFolder)
{
// Bind the shell folder interface.
IShellFolder shellFolderInterface;
IntPtr ppv = IntPtr.Zero;
var result = parentFolder.ShellFolderInterface.BindToObject(pidl, IntPtr.Zero, ref Shell32.IID_IShellFolder,
out ppv);//out shellFolderInterface);
shellFolderInterface = ((IShellFolder) Marshal.GetObjectForIUnknown(ppv));
ShellFolderInterface = shellFolderInterface;
// Validate the result.
if (result != 0)
{
// Throw the failure as an exception.
Marshal.ThrowExceptionForHR((int)result);
}
}
}
/// <summary>
/// Creates the icon.
/// </summary>
/// <returns></returns>
/// <exception cref="System.NotImplementedException"></exception>
private Icon CreateOverlayIcon()
{
var fileInfo = new SHFILEINFO();
Shell32.SHGetFileInfo(PIDL, 0, out fileInfo, (uint)Marshal.SizeOf(fileInfo),
SHGFI.SHGFI_PIDL | SHGFI.SHGFI_ICON | SHGFI.SHGFI_ADDOVERLAYS);
return fileInfo.hIcon != IntPtr.Zero ? Icon.FromHandle(fileInfo.hIcon) : null;
}
