In C++, transformations are applied by using the IDirect3DDevice7::SetTransform method. For example, you can use code like the following to set the view transformation:

    HRESULT hr
    D3DMATRIX  view;
     
    // Fill in the view matrix. 
     
    hr = lpDev->SetTransform(D3DTRANSFORMSTATE_VIEW, &view);
 
    if(FAILED(hr)){
        // Code to handle the error goes here.
    }

There are several possible settings for the first parameter in a call to IDirect3DDevice7::SetTransform. The most common are D3DTRANSFORMSTATE_WORLD, D3DTRANSFORMSTATE_VIEW, and D3DTRANSFORMSTATE_PROJECTION. These transformation states are defined in the D3DTRANSFORMSTATETYPE enumerated type. This enumeration also contains values to set transformations to be applied to texture coordinates: the D3DTRANSFORMSTATE_TEXTURE1 through D3DTRANSFORMSTATE_TEXTURE7 states.

In Visual Basic, transformations are applied by using the Direct3DDevice7.SetTransform method. For example, you could use code like the following to set the view transformation:

    On Local Error Resume Next
    Dim view As D3DMATRIX
     
    ' Fill in the view matrix.
    Call d3dDev.SetTransform(D3DTRANSFORMSTATE_VIEW, view)
 
    If Err.Number <> DD_OK Then
        ' Code to handle the error goes here.
    End If

There are several possible settings for the first parameter in a call to Direct3DDevice7.SetTransform. The most common are D3DTRANSFORMSTATE_WORLD, D3DTRANSFORMSTATE_VIEW, and D3DTRANSFORMSTATE_PROJECTION. These transformation states are defined in the CONST_D3DTRANSFORMSTATETYPE enumeration. This enumeration also contains values to set transformations to be applied to texture coordinates: the D3DTRANSFORMSTATE_TEXTURE1 through D3DTRANSFORMSTATE_TEXTURE7 states.