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desktop screenshot using C or C++

This is a discussion on desktop screenshot using C or C++ within the C Programming forums, part of the General Programming Boards category; I want to know how to write Simple C or C++ program to capture entire desktop image for every 1 ...

  1. #1
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    desktop screenshot using C or C++

    I want to know how to write Simple C or C++ program to capture entire desktop image for every 1 min

  2. #2
    C++ Witch laserlight's Avatar
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    Hmm... you ask about how to change keypresses to result in something else, then you ask about desktop screenshots to be taken periodically. What are you up to, really? Don't tell me that it is just knowledge, please.
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    Quote Originally Posted by laserlight View Post
    Hmm... you ask about how to change keypresses to result in something else, then you ask about desktop screenshots to be taken periodically. What are you up to, really? Don't tell me that it is just knowledge, please.

    Actually my intention is to capture desktop. remember in the other thread I asked key 'n' should be pressed when I press 'a' and I want to replace key 'n' with 'PrtScrn' because in my keyboard 'PrtScrn' key is not working.

    So the thread 'change keypresses' is my another idea of desktop capture.

    So please if you can help me, help me.

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    C++ Witch laserlight's Avatar
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    Quote Originally Posted by Yaswanth
    I want to replace key 'n' with 'PrtScrn' because in my keyboard 'PrtScrn' key is not working.
    I already gave you AutoIt as a suggestion. Here's another suggestion: change to a working keyboard.

    Maybe I'm just being overly suspicious of a new member, but the "every 1 min" sounds like you are up to no good, and coupled with the fact that you were asking about the keypress thing "for knowledge" when you could have said up front that you wanted to rebind another key to your print screen key because it was not working...
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    Sorry and I am not upto anything. usually I use fraps to capture screenshots and I capture while playing multiplayer games like AC series. so capturing periodical screenshots is good and i can achieve it by using fraps.
    But then I got the idea of writing my own program and curious to see how much I can do.

  6. #6
    Algorithm Dissector iMalc's Avatar
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    So you really weren't talking about changing the output of a console program then. You're talking about wanting to rewire the keyboard at the driver level. Something that would be sufficient for say a keyboard logger.
    Futhermore, simply pressing the print-screen key doesn't get you a file saved on disk, so I'm guessing that the next thing you'll ask is how to save the image. Something that would be sufficient for a screen logger.
    Lemme guess, you next want to know how to send files across the internet to another computer.

    Yeah I don't think I'm going to be helping you. If this was for legitimate purposes then that's unfortunate. You'll have to find someone a bit more gullible, erm I mean trusting.
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    Quote Originally Posted by iMalc View Post
    So you really weren't talking about changing the output of a console program then. You're talking about wanting to rewire the keyboard at the driver level. Something that would be sufficient for say a keyboard logger.
    Futhermore, simply pressing the print-screen key doesn't get you a file saved on disk, so I'm guessing that the next thing you'll ask is how to save the image. Something that would be sufficient for a screen logger.
    Lemme guess, you next want to know how to send files across the internet to another computer.

    Yeah I don't think I'm going to be helping you. If this was for legitimate purposes then that's unfortunate. You'll have to find someone a bit more gullible, erm I mean trusting.

    Well if you don't want to help that's ok.
    If I want that kind of thing I can easily use the existing tools to do that but not waiting hours and refreshing pages to find the answer that I am waiting for.
    If you don't want to help fine there is no need to post a full size paragraph telling that you don't want to help.

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    Registered User whiteflags's Avatar
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    If I want that kind of thing I can easily use the existing tools to do that but not waiting hours and refreshing pages to find the answer that I am waiting for.
    Someone who wanted to learn would not find this a waste of time. The more you know about types of people, the better a scheme you will plan.

  9. #9
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    It's not something that can be accomplished with standard C or C++, since they don't have that functionality. How you'll do it depends on your platform as well as the libraries you have installed. I suggest actually learning one of the aforementioned languages before trying to accomplish what you're attempting.

    Alternatively, if you're using a unix-like system, a far simpler option would be to write a script using a language like Bash. What you're asking for is really just a combination of two programs:
    • A program that will delay for 1 minute (like sleep.)
    • A program that will capture a desktop image (like scrot.)
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