|Microsoft DirectX 9.0|
Retrieves the viewport parameters currently set for the device.
D3DVIEWPORT9 *pViewport );
- [out] Pointer to a D3DVIEWPORT9 structure, representing the returned viewport parameters.
If the method succeeds, the return value is D3D_OK.
D3DERR_INVALIDCALL is returned if the pViewport parameter is invalid.
Typically, methods that return state will not work on a device that is created using D3DCREATE_PUREDEVICE. This method is an exception, because Microsoft?Direct3D?needs to track viewport data, even on a pure device.