3.3.5.2.7 MILCMD_METABITMAPRENDERTARGET_SETTRANSFORM

When the client receives a MILCMD_METABITMAPRENDERTARGET_SETTRANSFORM message, it MUST use the hTransform field resource (which MUST be of TYPE_TRANSFORM) as the initial transform when rendering its root visual. This will enable the meta bitmap render target to draw a transformed view of the desktop.