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Home/ Questions/Q 6575629
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Editorial Team
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Editorial Team
Asked: May 25, 20262026-05-25T15:24:38+00:00 2026-05-25T15:24:38+00:00

I have a variant that contains a BSTR, but sometimes the BSTR is (empty),

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I have a variant that contains a BSTR, but sometimes the BSTR is “” (empty), so how to avoid this? I have tried something like:

variant.bstrVal != NULL

But it didn’t work.

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  1. Editorial Team
    Editorial Team
    2026-05-25T15:24:38+00:00Added an answer on May 25, 2026 at 3:24 pm

    Use SysStringLen:

    if (SysStringLen(variant.bstrVal) == 0)
    { ... }
    
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