Basic Cross-Platform Console Formatting Function

This is a discussion on Basic Cross-Platform Console Formatting Function within the C++ Programming forums, part of the General Programming Boards category; Hi, I'm trying to write a function that prints text to the console in a custom format. I'm trying to ...

  1. #1
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    Basic Cross-Platform Console Formatting Function

    Hi,

    I'm trying to write a function that prints text to the console in a custom format. I'm trying to make it cross-platform, and I am developing on Windows. Right now, all I really care about is that the text is underlined. So far, I have:
    Code:
    void print_underlined(char* str) {
    	#ifdef _WIN32
    	static HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
    	SetConsoleTextAttribute(handle,COMMON_LVB_UNDERSCORE|FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE);
    	printf("%s",str);
    	SetConsoleTextAttribute(handle,FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE);
    
    	#else
    	printf("\033[4;37;40m%s\033[4;37;40m",str);
    
    	#endif
    }
    By playing with some of the arguments in SetConsoleTextAttribute in the first block, I can get different colored font, but for some reason it just is never underlined.

    Also, the #else code doesn't work for me (it oughtn't to; as before, I'm on Windows). I was hoping perhaps someone could let me know if it does.

    Thanks!
    Ian
    Last edited by Geometrian; 08-28-2011 at 09:19 PM.

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
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    Wrong forum/section methinks. In the future, post C in the C section, Windows (C or C++) in the Windows section.
    This is Windows (and C).
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #3
    'Allo, 'Allo, Allo
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    Windows doesn't support ANSI escape sequences (your else code) as you discovered. You also can't underline text in the console without puttting a line of hyphens or a similar character on the line underneath. That is your only option.

    COMMON_LVB_UNDERSCORE is for CJK characters.

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    For any cross-platform console programming you need an external library. The only standard things are input/output streams. These can be plugged into the console, but not necessarily.

    Quote Originally Posted by Elysia View Post
    Wrong forum/section methinks. In the future, post C in the C section, Windows (C or C++) in the Windows section.
    This is Windows (and C).
    Hm? Given this piece of code, you cannot determine whether this is pure C, or C++. He is also asking about cross-platform solutions.
    I never put signature, but I decided to make an exception.

  5. #5
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    Quote Originally Posted by kmdv View Post
    For any cross-platform console programming you need an external library.
    Ahhh. Can you suggest some? Ideally, I'd like something simple and lightweight.
    you cannot determine whether this is pure C, or C++. He is also asking about cross-platform solutions.
    Yes, this is C++. I posted in C++ because I didn't want to exclude any potential C++ solutions.
    Quote Originally Posted by adeyblue View Post
    You also can't underline text in the console without puttting a line of hyphens or a similar character on the line underneath. That is your only option.
    I had considered this. In my case this is extremely inconvenient, and I would much rather do underlining if possible.
    Quote Originally Posted by adeyblue View Post
    COMMON_LVB_UNDERSCORE is for CJK characters.
    I see. That's good to know. Thanks.

    Ian

  6. #6
    Registered User manasij7479's Avatar
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    Ahhh. Can you suggest some? Ideally, I'd like something simple and lightweight.
    Maybe ncurses ..
    Manasij Mukherjee | gcc-4.8.2 @Arch Linux
    Slow and Steady wins the race... if and only if :
    1.None of the other participants are fast and steady.
    2.The fast and unsteady suddenly falls asleep while running !



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