<summary> A locking mechanism from a Direct2D factory that Direct2D uses to control exclusive resource access in an app that is uses multiple threads. </summary>
<summary> Enters the D2D API critical section, if it exists. </summary>
<summary> Returns whether the D2D factory was created with D2D1_FACTORY_TYPE_MULTI_THREADED. </summary>
<summary> Leaves the D2D API critical section, if it exists. </summary>
See Implementation
<summary> A locking mechanism from a Direct2D factory that Direct2D uses to control exclusive resource access in an app that is uses multiple threads. </summary>