| Microsoft DirectX 8.1 (Visual Basic) | 
Builds a customized, right-handed perspective projection matrix.
D3DXMatrixPerspectiveOffCenterRH( _ 
    MOut As D3DMATRIX, _ 
    l As Single, _ 
    r As Single, _ 
    b As Single, _ 
    t As Single, _ 
    zn As Single, _ 
    zf As Single)
If the function fails, an error is raised and Err.Number can be set to one of the following values.
| D3DERR_INVALIDCALL | 
| D3DERR_OUTOFVIDEOMEMORY | 
For information on trapping errors, see the Microsoft® Visual Basic® Error Handling topic.
All the parameters of the D3DXMatrixPerspectiveOffCenterRH function are distances in camera-space. The parameters describe the dimensions of the view-volume.
D3DXMatrixPerspectiveRH, D3DXMatrixPerspectiveLH, D3DXMatrixPerspectiveFovRH, D3DXMatrixPerspectiveFovLH, D3DXMatrixPerspectiveOffCenterLH