This function was introduced in Quick PDF Library version 7.12.
For detailed page layouts the BeginPageUpdate function can be called before a group of drawing commands. The page layout commands will then be buffered until a matching call to this function.
function TDebenuPDFLibrary1511.EndPageUpdate: Integer;
Function DebenuPDFLibrary1511.PDFLibrary::EndPageUpdate As Long
int DPLEndPageUpdate(int InstanceID)