private int GetIconIndex(string fileName, bool isDirectory, bool forceLoadFromDisk, ShellIconStateConstants iconState)
{
NativeMethods.SHGetFileInfoConstants dwFlags; uint dwAttr;
GetAttributes(isDirectory, forceLoadFromDisk, out dwAttr, out dwFlags);
// sFileSpec can be any file.
if (fileName.EndsWith(".lnk", StringComparison.InvariantCultureIgnoreCase))
{
dwFlags |= NativeMethods.SHGetFileInfoConstants.SHGFI_LINKOVERLAY | NativeMethods.SHGetFileInfoConstants.SHGFI_ICON;
iconState = ShellIconStateConstants.ShellIconStateLinkOverlay;
forceLoadFromDisk = true;
}
var shfi = new NativeMethods.SHFILEINFO();
var shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
var retVal = NativeMethods.SHGetFileInfo(fileName, dwAttr, ref shfi, shfiSize, ((uint)(dwFlags) | (uint)iconState));
if (!retVal.Equals(IntPtr.Zero))
{
return(shfi.iIcon.ToInt32());
}
if (forceLoadFromDisk)
{
return(GetIconIndex(Path.GetFileName(fileName), isDirectory, false, iconState));
}
Debug.Assert((!retVal.Equals(IntPtr.Zero)), "Failed to get icon index");
return(-1);
}
public static IntPtr Test()
{
var shfi = new NativeMethods.SHFILEINFO();
var shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
return(NativeMethods.SHGetFileInfo(@"C:\", 16, ref shfi, shfiSize, 16384));
}
private int GetIconIndex(IntPtr pidlPtr, bool isDirectory, bool forceLoadFromDisk, ShellIconStateConstants iconState)
{
NativeMethods.SHGetFileInfoConstants dwFlags; uint dwAttr;
GetAttributes(isDirectory, forceLoadFromDisk, out dwAttr, out dwFlags);
dwFlags |= NativeMethods.SHGetFileInfoConstants.SHGFI_PIDL;
var shfi = new NativeMethods.SHFILEINFO();
var shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
var retVal = NativeMethods.SHGetFileInfo(pidlPtr, dwAttr, ref shfi, shfiSize, ((uint)(dwFlags) | (uint)iconState));
if (!retVal.Equals(IntPtr.Zero))
{
return(shfi.iIcon.ToInt32());
}
Debug.Assert((!retVal.Equals(IntPtr.Zero)), "Failed to get icon index");
return(-1);
}
/// <summary>
/// Gets the information for the specified
/// file name and flags.
/// </summary>
public void GetInfo()
{
fileIcon = null;
typeName = "";
displayName = "";
NativeMethods.SHFILEINFO shfi = new NativeMethods.SHFILEINFO();
uint shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
IntPtr ret = NativeMethods.SHGetFileInfo(
fileName, 0, ref shfi, shfiSize, (uint)(flags));
if (ret != IntPtr.Zero)
{
if (shfi.hIcon != IntPtr.Zero)
{
fileIcon = System.Drawing.Icon.FromHandle(shfi.hIcon);
// Now owned by the GDI+ object
//DestroyIcon(shfi.hIcon);
}
typeName = shfi.szTypeName;
displayName = shfi.szDisplayName;
}
else
{
int err = NativeMethods.GetLastError();
Console.WriteLine("Error {0}", err);
string txtS = new string('\0', 256);
int len = NativeMethods.FormatMessage(
NativeMethods.FORMAT_MESSAGE_FROM_SYSTEM | NativeMethods.FORMAT_MESSAGE_IGNORE_INSERTS,
IntPtr.Zero, err, 0, txtS, 256, 0);
Console.WriteLine("Len {0} text {1}", len, txtS);
// throw exception
}
}
private int GetIconIndex(IntPtr pidlPtr, bool isDirectory, bool forceLoadFromDisk, ShellIconStateConstants iconState)
{
NativeMethods.SHGetFileInfoConstants dwFlags; uint dwAttr;
GetAttributes(isDirectory, forceLoadFromDisk, out dwAttr, out dwFlags);
dwFlags |= NativeMethods.SHGetFileInfoConstants.SHGFI_PIDL;
var shfi = new NativeMethods.SHFILEINFO();
var shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
var retVal = NativeMethods.SHGetFileInfo(pidlPtr, dwAttr, ref shfi, shfiSize, ((uint)(dwFlags) | (uint)iconState));
if (!retVal.Equals(IntPtr.Zero)) return shfi.iIcon.ToInt32();
Debug.Assert((!retVal.Equals(IntPtr.Zero)), "Failed to get icon index");
return -1;
}
private int GetIconIndex(string fileName, bool isDirectory, bool forceLoadFromDisk, ShellIconStateConstants iconState)
{
NativeMethods.SHGetFileInfoConstants dwFlags; uint dwAttr;
GetAttributes(isDirectory, forceLoadFromDisk, out dwAttr, out dwFlags);
// sFileSpec can be any file.
if (fileName.EndsWith(".lnk", StringComparison.InvariantCultureIgnoreCase))
{
dwFlags |= NativeMethods.SHGetFileInfoConstants.SHGFI_LINKOVERLAY | NativeMethods.SHGetFileInfoConstants.SHGFI_ICON;
iconState = ShellIconStateConstants.ShellIconStateLinkOverlay;
forceLoadFromDisk = true;
}
var shfi = new NativeMethods.SHFILEINFO();
var shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
var retVal = NativeMethods.SHGetFileInfo(fileName, dwAttr, ref shfi, shfiSize, ((uint)(dwFlags) | (uint)iconState));
if (!retVal.Equals(IntPtr.Zero)) return shfi.iIcon.ToInt32();
if (forceLoadFromDisk)
return GetIconIndex(Path.GetFileName(fileName), isDirectory, false, iconState);
Debug.Assert((!retVal.Equals(IntPtr.Zero)), "Failed to get icon index");
return -1;
}
public static IntPtr Test()
{
var shfi = new NativeMethods.SHFILEINFO();
var shfiSize = (uint)Marshal.SizeOf(shfi.GetType());
return NativeMethods.SHGetFileInfo(@"C:\", 16, ref shfi, shfiSize, 16384);
}