IDCompositionAffineTransform2DEffect.SetTransformMatrix

Undocumented in source but is binding to Windows. You might be able to learn more by searching the web for its name.
interface IDCompositionAffineTransform2DEffect
extern (Windows)
HRESULT
SetTransformMatrix
(
const(D2D1_MATRIX_3X2_F)* transformMatrix
)

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