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Thread: getting the color from the screen?

  1. Feb 16th, 2003, 02:07 AM #1
    MrPolite
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    getting the color from the screen?

    I'm trying to get the color of a specified pixel on the screen. I tried getting a screenshot and then getting the color from that (which didnt work for whatever reason), but it's too slow and inefficient. Is there a way to do this, perhaps with the GetPixel API?
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  2. Feb 17th, 2003, 03:20 AM #2
    MrPolite
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    bump
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  3. Feb 17th, 2003, 03:25 AM #3
    phrozeman
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    U mean like the Color Picker in Photoshop, get the color of the pixel u clicked on in an image?
    There's a certain mystique when I speak, that you notice that it's sorta unique, cause you know it's me
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  4. Feb 17th, 2003, 12:21 PM #4
    MrPolite
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    Originally posted by phrozeman
    U mean like the Color Picker in Photoshop, get the color of the pixel u clicked on in an image?
    not the pixel on an image, on the screen. Kinda like the color picker in fireworks. You click somewhere on the screen (yeah screen, on any program) and it gives you the color for that pixel
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  6. Feb 17th, 2003, 01:26 PM #5
    phrozeman
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    Yeah, i know what u mean...
    I never saw an example of that before, but i gonna take a look if i can find something
    There's a certain mystique when I speak, that you notice that it's sorta unique, cause you know it's me
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  7. Feb 22nd, 2003, 11:52 PM #6
    MrPolite
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    Originally posted by phrozeman
    Yeah, i know what u mean...
    I never saw an example of that before, but i gonna take a look if i can find something
    did you find anything?
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    Extract thumbnail without reading the whole image file: (C# - VB)
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  8. Mar 9th, 2004, 10:12 PM #7
    vandog
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    http://www.vandog.com/colorpicker.html

    ...It is tested with VB, but I have no idea does it works properly with VB.NET.

    ( ? )
    http://www.vandog.com/
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  9. Mar 10th, 2004, 08:39 PM #8
    MrPolite
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    w00t see this http://www.innovasys.co.uk/products/colorpicker.asp

    not free though
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    Extract thumbnail without reading the whole image file: (C# - VB)
    Apply texture to bitmaps: (C# - VB)
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    Save JPEG with a certain quality (image compression): (C# - VB )
    VB.NET to C# conversion tips!!
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  11. Mar 11th, 2004, 05:25 AM #9
    unisse
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    If you are able to create a Device context (the CreateDC API) of the screen, there is a API called GetPixel in Windows 2000 and later to get the RGB settings for the appropriate pixel in the Device context.

    This is more or less a shot in the dark as I seldom do much API programming. But my knowledge in C++ programming tells me that this should be possible.

    /Nisse
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