/// <summary>
/// Determines whether an overlay should be shown for the shell item with the path 'path' and
/// the shell attributes 'attributes'.
/// </summary>
/// <param name="path">The path for the shell item. This is not necessarily the path
/// to a physical file or folder.</param>
/// <param name="attributes">The attributes of the shell item.</param>
/// <returns>
/// <c>true</c> if this an overlay should be shown for the specified item; otherwise, <c>false</c>.
/// </returns>
protected override bool CanShowOverlay(string path, SFGAO attributes)
{
// We are going to show the overlay only for read only files.
if (attributes.HasFlag(SFGAO.SFGAO_FILESYSTEM) == false || attributes.HasFlag(SFGAO.SFGAO_FOLDER)
|| attributes.HasFlag(SFGAO.SFGAO_STREAM))
return false;
// Get the file attributes.
var fileAttributes = new FileInfo(path);
// Return true if the file is read only, meaning we'll show the overlay.
return fileAttributes.IsReadOnly;
}
/// <summary>
/// Determines whether an overlay should be shown for the shell item with the path 'path' and
/// the shell attributes 'attributes'.
/// </summary>
/// <param name="path">The path for the shell item. This is not necessarily the path
/// to a physical file or folder.</param>
/// <param name="attributes">The attributes of the shell item.</param>
/// <returns>
/// <c>true</c> if this an overlay should be shown for the specified item; otherwise, <c>false</c>.
/// </returns>
protected override bool CanShowOverlay(string path, SFGAO attributes)
{
// We are going to show the overlay only for read only files.
if (attributes.HasFlag(SFGAO.SFGAO_FILESYSTEM) == false || attributes.HasFlag(SFGAO.SFGAO_FOLDER) ||
attributes.HasFlag(SFGAO.SFGAO_STREAM))
{
return(false);
}
// Get the file attributes.
var fileAttributes = new FileInfo(path);
// Return true if the file is read only, meaning we'll show the overlay.
return(fileAttributes.IsReadOnly);
}
private static void UpdateFlagIfSet(ref SFGAO sfgao, SFGAO flag, bool set)
{
if (sfgao.HasFlag(flag))
{
if (set == false)
{
sfgao ^= flag;
}
}
}
private static void UpdateFlagIfSet(ref SFGAO sfgao, SFGAO flag, bool set)
{
if (sfgao.HasFlag(flag))
{
if (set == false)
sfgao ^= flag;
}
}