D3DXBaseMesh.LockVertexBuffer

Locks a vertex buffer and obtains access to the vertex buffer memory.

object.LockVertexBuffer( _ 
    Flags As Long) As Long

Parts

object

Object expression that resolves to a D3DXBaseMesh object.

Flags

Combination of one or more valid locking flags defined by the CONST_D3DLOCKFLAGS enumeration, describing how the vertex buffer memory should be locked.

Return Values

Returns a Long value providing access to the locked vertex data.

Error Codes

If the method fails, an error is raised and Err.Number can be set to D3DERR_INVALIDCALL.

For information on trapping errors, see the Microsoft® Visual Basic® Error Handling topic.

Applies To

This method applies to the following classes, which implement methods from D3DXBaseMesh.

• D3DXMesh
• D3DXPMesh

Remarks

When working with vertex buffers, you are allowed to make multiple lock calls. However, you must ensure that the number of lock calls match the number of unlock calls. DrawPrimitive calls do not succeed with any outstanding lock count on any currently set vertex buffer.

See Also

D3DXBaseMesh.UnlockVertexBuffer