Delete a parameter block.
HRESULT DeleteParameterBlock( D3DXHANDLE hParameterBlock );
If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, D3DXERR_INVALIDDATA.
Parameter blocks are blocks of effect states. Use a parameter block to record state changes so that they can be applied later on with a single API call. When no longer needed, delete the parameter block to reduce memory usage.
Header: Declared in D3dx9effect.h.
ID3DXEffect::BeginParameterBlock, ID3DXEffect::EndParameterBlock