/// <summary>
/// Determines whether two specified <see cref="MetadataTag"/> objects have the same value.
/// </summary>
/// <param name="left">A <see cref="MetadataTag"/> or a null reference (<b>Nothing</b> in Visual Basic).</param>
/// <param name="right">A <see cref="MetadataTag"/> or a null reference (<b>Nothing</b> in Visual Basic).</param>
/// <returns>
/// <b>true</b> if the value of left is the same as the value of right; otherwise, <b>false</b>.
/// </returns>
public static bool operator ==(MetadataTag left, MetadataTag right)
{
// Check whether both are null
if ((object)left == (object)right)
{
return(true);
}
else if ((object)left == null || (object)right == null)
{
return(false);
}
left.CheckDisposed();
right.CheckDisposed();
// Check all properties
if ((left.Key != right.Key) ||
(left.ID != right.ID) ||
(left.Description != right.Description) ||
(left.Count != right.Count) ||
(left.Length != right.Length) ||
(left.Model != right.Model) ||
(left.Type != right.Type))
{
return(false);
}
if (left.Length == 0)
{
return(true);
}
IntPtr ptr1 = FreeImage.GetTagValue(left.tag);
IntPtr ptr2 = FreeImage.GetTagValue(right.tag);
return(FreeImage.CompareMemory(ptr1, ptr2, left.Length));
}