Checks if the format reader is opened.
Namespace:
Aurigma.GraphicsMill.Codecs
Assembly:
Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
Protected Friend Overridable Sub CheckOpened
protected internal virtual void CheckOpened()
This method is called whenever any reader property that is associated with an opened file (for example, dimensions or quality) is used. It is also called when the frame is loaded.