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Thread: Drawing directly to the screen?

  1. Aug 11th, 2002, 12:13 PM #1
    Jotaf98
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    Question Drawing directly to the screen?

    Hi, I'm working on a VB project where I need to draw and animate a small image (with a transparent background) to the screen. I can do it using bitblt and GetWindowDC(0), but I would then need to clear part of the screen when moving it or animating it. I tried using RedrawWindow but it doesn't seem to work. Even if it did, at 25 frames per second it would produce a visible flicker - is there any other way? Or can you at least help me the way I'm doing it? (I've seen lots of programs doing this and they all work perfectly...)

    Thanks
    Code:
    Temp = Me.GetIQ()
'Error 9: Overflow
'DON'T PANIC! :eek:

    To learn how to use realistic effects in your games like fire, rain, snow and magic effects, read my article on particles systems here.


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  2. Aug 12th, 2002, 11:37 PM #2
    Zaei
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    Simply find a bounding box around the image you want to draw, and save the image. Also, you can Set a transparency flag on your window, which causes everything BEHIND the window to be drawn on top of it(I Believe). You could create a window like this, and then draw to that window, like normal. I think that the flag is WS_EX_TRANSPARENT, look it up in MSDN. If that is NOT the flag name, look up the CreateWindowEx() API call. It will be listed in that section.

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  3. Aug 13th, 2002, 04:36 PM #3
    Jotaf98
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    Thanks... I'll try that and post back tomorrow (sorry I know I posted twice but I can't delete any of the posts hehe )
    Code:
    Temp = Me.GetIQ()
'Error 9: Overflow
'DON'T PANIC! :eek:

    To learn how to use realistic effects in your games like fire, rain, snow and magic effects, read my article on particles systems here.


    Jotaf's Theories!
    "Cats land on their feet. Toast lands peanut butter side down. A cat with toast strapped to its back will hover above the ground in a state of quantum indecision."
    Reply With Quote Reply With Quote
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