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Chilkat Tech Notes » VB6 Runtime error 91 – Object variable or With block variable not set
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日期：2025-04-29
VB6 Runtime error 91 – Object variable or With block variable not set By admin A Chilkat method that returns an object must be checked for NULL ( also known as Nothing, nil, nada, etc. in other programming languages). A NULL return value indicates failure...看更多
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