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Lines with arrows vanish sometimes if you zoom in

This is a discussion on Lines with arrows vanish sometimes if you zoom in within the MapPoint Desktop Discussion forums, part of the Map Forums category; I'm writing a program for transport logistics, where vehicle routes are displayed as a series of arrows. But sometimes these ...

  1. #1
    Naryoril is offline Junior Member White Belt
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    Lines with arrows vanish sometimes if you zoom in

    I'm writing a program for transport logistics, where vehicle routes are displayed as a series of arrows. But sometimes these arrows vanish if I zoom as far as possible. I have no idea what's the criteria for this to happen. Does anyone know more about this?

  2. #2
    Wilfried is offline Senior Member Black Belt
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    Re: Lines with arrows vanish sometimes if you zoom in

    Hi,

    I have no answer, but can you try to find out when exacly they dissapear ? Mabye if you zoom in that no begin / end point is visible, or maybe other condition ? Sure we can find some workaround (I hope), but we have to try to find out more of the reason furst.

  3. #3
    Naryoril is offline Junior Member White Belt
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    Re: Lines with arrows vanish sometimes if you zoom in

    Well, that's the big problem. I have no idea when it happens. I tested arount for about 3 hours, zooming in and zooming out and a looking at a lot of arrows, but i couldn't find anything they had all in common (and the others not). The only thing i found out is, that this doesn't happen if they don't have an arrow.
    And if a line disapperas, it disapperars everywhere, at the end, at the beginning and in between

  4. #4
    Wilfried is offline Senior Member Black Belt
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    Re: Lines with arrows vanish sometimes if you zoom in

    Hi,

    What is the IDE / language you programming in ? (I ask because maybe I have a little time to search out the problem).

  5. #5
    Naryoril is offline Junior Member White Belt
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    Re: Lines with arrows vanish sometimes if you zoom in

    VC++ in VS 2005

  6. #6
    Wilfried is offline Senior Member Black Belt
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    Re: Lines with arrows vanish sometimes if you zoom in

    Hi,

    Can you make me a simple project that demonstrate the behavour ? Only relevant code to demonstrate please. Then please email it private. I will try when I have some spare time and answer here on the forum.

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