drawing over the open program.

This is a discussion on drawing over the open program. within the Windows Programming forums, part of the Platform Specific Boards category; I need to know how to make a windows prog in C that will stay in the background but still ...

  1. #1
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    Question drawing over the open program.

    I need to know how to make a windows prog in C that will stay in the background but still draw lines over the open program. The open program i am thinking about is a graphics rich game namely Quake3.

    I am thinking of making the program multi threaded. Any thoughts?

  2. #2
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    You can get a handle to a device context that will allow you to draw to any part of the screen by passing NULL into GetDC(). However, you wont be able to draw over any app that has exclusive control of the screen (using opengl,dx etc), so whatever idea you're having about Quake3 wont work.

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    well i have seen something like it in another program so i know it can be done. That program constantly wrote some lines on the screen so that when quake3 refreshes the screen the lines would disappear. This caused a flicker effect, but it did work.

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    Registered User minime6696's Avatar
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    Question Huh?

    I dont quite understand why you are asking a question, all that is happening is you're drawing lines over a part of the screen Quake3 is using... therefor Quake3 (running on a primative platform... windows) will draw back over those lines continuously. All you need for this is a program with exclusive contol and a context to the whole screen.

    Was the the correct Q+ A?

    SPH

  5. #5
    Registered User cppdude's Avatar
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    yes my program will draw over quake3 continuosly to keep these lines that i want on the screen.

  6. #6
    Banned master5001's Avatar
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    What purpose would this program serve? If you want lines on the screen while playing Quake3 may I suggest black string with tape holding it in place in either side of the monitor. This may not conform to ANSI C/C++ but it should do the trick

  7. #7
    Registered User cppdude's Avatar
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    that is only the start. It is meant to scan what is on the screen while playing quake 3 (specifically a CS type mod) and magnify the area around the crosshair. This will serve as a zoom cheat.

    Yes i know quake3 has a zoom with every weapon but i am talking about one of its mods that only allows zooming with the sniper rifles. I want to be able to snipe with a machine gun.

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