A question related to BGI

This is a discussion on A question related to BGI within the Windows Programming forums, part of the Platform Specific Boards category; The reason why i haven't posted it in the game programming section is, i am not creating a game. I ...

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    A question related to BGI

    The reason why i haven't posted it in the game programming section is, i am not creating a game.
    I want to redraw the current screen (even forcefully) something analogous to refresh() function call in NCurses.
    Any attempt to help me is greatly appreciated as i have searched google for hours and cant find anything like it.

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    Short answer is: you can't.

    The general rule with BGI is that, to refresh a screen, you need to repeat all the steps (at least, since the last ClearViewPort() or ClearDevice() call - depending on what you want to refresh) you did to get to the latest state.

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    Registered User Codeplug's Avatar
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    Why are you using BGI?

    gg

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    Thanks for Response grumpy

    Collage forced us to code in BGI.....
    So no clear cut way huh....Ncurses is way way better .

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    Ncurses better? Not really ..... just different.

    BGI is implemented with the assumption that it has exclusive control of the screen. This was a valid assumption at the time, and meant that there should be nothing writing to or corrupting the screen - hence no need to refresh. Ncurses is written without that assumption, hence needed an ability to refresh(), and all the overhead that introduces.

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    Super Moderator VirtualAce's Avatar
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    College is forcing you to code in BGI?

    OMG. I would look for another college.

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    (?<!re)tired Mario F.'s Avatar
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    Quote Originally Posted by grumpy View Post
    This was a valid assumption at the time, and meant that there should be nothing writing to or corrupting the screen - hence no need to refresh. Ncurses is written without that assumption, hence needed an ability to refresh(), and all the overhead that introduces.
    Another reason for refresh is to provide flush functionality to streamed buffers in ncurses. It has also a major role in displaying windows and pads and updating their contents (which is basically the ability to update only portions of the screen).
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

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