public bool IsValid()

Public Function IsValid As Boolean

public:
bool IsValid()

member IsValid : unit -> bool 

Return Value

Notes:

• It is not necessary to bind an OpenGL context to call this method.

• The buffer object will be invalid until memory is allocated, either explicitly (see setSize()) or implicitly (e.g. mapping from another buffer).

• The buffer object will be invalid after calling clearInstance().

Reference