/// <summary>
///
/// </summary>
/// <param name="path"></param>
/// <param name="overlayIndex">Index of the overlay icon that use for Draw or GetIndexOfOverlay method.</param>
/// <returns></returns>
public int GetIconIndexWithOverlay(IntPtr path, out int overlayIndex)
{
var options = SHGetFileInfoOptions.SysIconIndex | SHGetFileInfoOptions.OverlayIndex | SHGetFileInfoOptions.Icon | SHGetFileInfoOptions.AddOverlays | SHGetFileInfoOptions.Pidl;
var shfi = new SHFileInfo();
var shfiSize = Marshal.SizeOf(shfi.GetType());
IntPtr retVal = Win32Api.SHGetFileInfo(path, FileAttributes.None, ref shfi, shfiSize, options);
if (shfi.hIcon != IntPtr.Zero)
{
Win32Api.DestroyIcon(shfi.hIcon);
}
if (retVal.Equals(IntPtr.Zero))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
else
{
/* brakes stack on optimized build
* int idx = shfi.iIcon & 0xFFFFFF;
* int iOverlay = shfi.iIcon >> 24;
* overlayIndex = iOverlay;
* return idx;
*/
overlayIndex = shfi.iIcon >> 24;
return(shfi.iIcon & 0xFFFFFF);
}
}
public int GetIconIndex(IntPtr path)
{
var options = SHGetFileInfoOptions.SysIconIndex | SHGetFileInfoOptions.Pidl;
var shfi = new SHFileInfo();
var shfiSize = Marshal.SizeOf(shfi.GetType());
IntPtr retVal = Win32Api.SHGetFileInfo(path, FileAttributes.None, ref shfi, shfiSize, options);
if (shfi.hIcon != IntPtr.Zero)
{
Win32Api.DestroyIcon(shfi.hIcon);
}
if (retVal.Equals(IntPtr.Zero))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
else
{
return(shfi.iIcon);
}
}