/// <summary>
/// Get the icon for the specified file
/// </summary>
/// <param name="filePath">path to file</param>
/// <param name="iconType">icon type (small or large)</param>
/// <returns>IconHandle (or null if none found). IconHandle represents
/// a Win32 HICON. It must be Disposed when the caller is finished with
/// it to free the underlying resources used by the Icon. </returns>
private static IconHandle GetIconForFile(string filePath, uint iconType)
{
// allocate SHFILEINFO for holding results
SHFILEINFO fileInfo = new SHFILEINFO();
// get icon info
IntPtr result = Shell32.SHGetFileInfo(filePath, 0, ref fileInfo,
(uint)Marshal.SizeOf(fileInfo), SHGFI.ICON | iconType);
if (result == IntPtr.Zero)
{
Debug.Fail("Error getting icon for file: " + Marshal.GetLastWin32Error());
return null;
}
// return IconHandle
return new IconHandle(fileInfo.hIcon);
}
/// <summary>
/// Get the icon for the specified file extension
/// </summary>
/// <param name="extension">file extension (including leading .)</param>
/// <param name="flags">icon type (small or large)</param>
/// <returns>IconHandle (or null if none found). IconHandle represents
/// a Win32 HICON. It must be Disposed when the caller is finished with
/// it to free the underlying resources used by the Icon. </returns>
private static IconHandle GetIconForExtension(string extension, uint flags)
{
// allocate SHFILEINFO for holding results
SHFILEINFO fileInfo = new SHFILEINFO();
// get icon info for file extension
IntPtr result = Shell32.SHGetFileInfo(extension, FILE_ATTRIBUTE.NORMAL, ref fileInfo,
(uint)Marshal.SizeOf(fileInfo), SHGFI.ICON | flags | SHGFI.USEFILEATTRIBUTES);
if (result == IntPtr.Zero)
{
Debug.Fail("Error getting icon for file: " + Marshal.GetLastWin32Error());
return null;
}
// return IconHandle
return new IconHandle(fileInfo.hIcon);
}
public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags);
