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  1. May 24th, 1999, 07:55 AM #1
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    Visual C++, Windows Operating System

    Windows operating system can have how many DC (device contexts)?


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  2. May 24th, 1999, 09:48 AM #2
    Jason Teagle
    Jason Teagle is offline Member +
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    Re: Visual C++, Windows Operating System

    If I remember correctly, memory DCs are only limited by memory; for DCs which represent a window (from GetDC() ), you can only have 5 at any one time. In 16-bit Windows I believe subsequent attempts to get one would fail; I think in 32-bit Windows it now dumps one of the earlier DCs, which might cause undesirable side-effects in other programs.

    Rule-of-thumb: Don't grab more than one at a time, and release it as soon as possible!

    If you want to perform the same series of drawing commands on several DCs, consider creating and playing a Windows metafile.



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  3. May 26th, 1999, 01:39 AM #3
    Sheik Mukthar
    Sheik Mukthar is offline Junior Member
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    Re: Visual C++, Windows Operating System

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