Colour Font

This is a discussion on Colour Font within the Windows Programming forums, part of the Platform Specific Boards category; Code: #include <stdio.h> #include <windows.h> int main ( void ) { HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE ); WORD wOldColorAttrs; ...

  1. #1
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    Colour Font

    Code:
    #include <stdio.h> 
    #include <windows.h> 
    
    int main ( void )
    {
      HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
      WORD wOldColorAttrs;
      CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
      
      /*
       * First save the current color information
       */
      GetConsoleScreenBufferInfo(h, &csbiInfo);
      wOldColorAttrs = csbiInfo.wAttributes; 
      
      /*
       * Set the new color information
       */
      SetConsoleTextAttribute ( h, FOREGROUND_RED | FOREGROUND_INTENSITY );
      
      printf ( "This is a test\n" );
    
      /*
       * Restore the original colors
       */
      SetConsoleTextAttribute ( h, wOldColorAttrs);
      return 0;
    }
    mind explaning to me how those codes work ?
    1 more question ...
    when i add system("color 1F") at the beginning of the codes above, the background of "This is a test" is still black colour, how do i change it to become blue background ?

  2. #2
    and the hat of wrongness Salem's Avatar
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    > mind explaning to me how those codes work ?
    Read the manual page for each of those functions would be my advice

    > when i add system("color 1F") at the beginning of the codes above
    system() creates another (short-lived) shell, changes the colour in that sub-shell and exits. The current shell remains as it was

    > how do i change it to become blue background ?
    On your way through reading the manual on the functions above, watch out for any which mention "background" in the list of related functions.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  3. #3
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    mind explaning to me how those codes work ?
    Well, in general, <windows.h> contains thousands of functions, constants, structures, and a few typedefs. For example, I believe FOREGROUND_INTENSITY is an enumerated constant. (You could display it with cout and you would see its numerical value.)

    If you want specifics... if you want to know what SetConsoleTextAttribute() does and how to use it, you can look it up in your compiler's documentation / help.

    If you want to learn about all of the WinAPI functions you have to get a copy of Programming Windows buy Charles Petzold. But of course, he doesn't talk much about the console functions.

    I believe if you want to change the entire console background, you have to "re-draw" the entire screen. Off-hand I don't know how to do this... It's probably possible to determine the color before the console window is created... but I don't know how to do that either.

    And remember... None if this is standard-portable C++. It only works on Windows computers and only compiles with a Windows compiler.
    Last edited by DougDbug; 10-24-2003 at 12:44 PM.

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