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Copies a stream of data for a single vertex element into a locked vertex buffer.  Parameters
  
    | pVertexBuffer | Vertex buffer to write to. |  | targetElement | Target element within the vertex buffer. |  | targetElementIndex | Target element index. |  | pSourceData | Pointer to the source data. |  | sourceDataFormat | Format of the source data. |  | sourceDataStride | Stride of the source data, in bytes. |  | numVertices | Number of vertices to write. | 
 ReturnsNone. 
 See AlsoMFVertex_LockVertexBuffer() 
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