Drawing3d documented Class Library

FeaturesW32.PIXELFORMATDESCRIPTOR.bReserved Field

Specifies the number of overlay and underlay planes. Bits 0 through 3 specify up to 15 overlay planes and bits 4 through 7 specify up to 15 underlay planes.

[Visual Basic]
Public bReserved As Byte
[C#]
public byte bReserved;

See Also

PIXELFORMATDESCRIPTOR Class | Drawing3d.OS.Windows Namespace