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Thread: API constant masks

  1. Aug 22nd, 2001, 01:58 PM #1
    JoshT
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    API constant masks

    Suppose you have a DWORD type value that could be API_CONST1 or API_CONST2, or both.

    Through VB, how do you handle the situation where its both, so "If value = API_CONST1 Then" would fail even though the value is API_CONST1 masked with the other constant?

    Thanks.
    Josh
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  2. Aug 22nd, 2001, 02:13 PM #2
    gdebacker
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    If I understand your question I think this is the answer.

    lValue contains the sum of APIConst1 and APIConst2.

    Code:
    If (lValue And APIConst1) = APIConst1 Then

End if
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  3. Aug 23rd, 2001, 06:12 AM #3
    JoshT
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    I think that it's -- I was trying to do the same, but on the wrong side of the equal sign

    Thank you.
    Josh
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