private static IconContainer GetIconFromShell(string path, bool useExtension, bool largeIcon)
{
IconContainer container;
ShellFileInfo fileInfo = new ShellFileInfo();
IconCriticalHandle critHandle = null;
uint fileAttributes = 0x80;
uint flags = 0x100;
if (!largeIcon)
{
flags |= 1;
}
if (useExtension)
{
flags |= 0x10;
if (string.IsNullOrEmpty(path))
{
fileAttributes = 0x10;
}
}
try
{
if (ShellAPI.SHGetFileInfo(path, fileAttributes, ref fileInfo, (uint)Marshal.SizeOf(fileInfo), flags) == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
critHandle = new IconCriticalHandle(fileInfo.handle);
container = new IconContainer(critHandle);
}
finally
{
if ((critHandle == null) && (fileInfo.handle != IntPtr.Zero))
{
ShellAPI.DestroyIcon(fileInfo.handle);
}
}
return container;
}
public static extern IntPtr SHGetFileInfo(string path, uint fileAttributes, ref ShellFileInfo fileInfo, uint cbFileInfo, uint flags);
