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DirectX Media > Direct3D Retained-Mode > Direct3D Retained-Mode Overview > Direct3D Retained-Mode Architecture > IDirect3DRMViewport and IDirect3DRMViewportArray Interface

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DirectX Media > Direct3D Retained Mode > Overviews > Viewports

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Microsoft DirectX 7.0 > Appendix > Direct3D Retained Mode > Overviews > Viewports