DOCUMENT:Q104094  11-DEC-2001  [visualc]
TITLE   :INFO: Console Applications Can Call the Windows 32-Bit API
PRODUCT :Microsoft C Compiler
PROD/VER::1.0,2.0,2.1,4.0,5.0,6.0
OPER/SYS:
KEYWORDS:kbGenInfo kbVC100 kbVC200 kbVC210 kbVC400 kbVC500 kbVC600 kbArtTypeINF

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The information in this article applies to:

 - Microsoft Visual C++, 32-bit Editions, versions 1.0, 2.0, 2.1, 4.0, 5.0, 6.0 
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SUMMARY
=======

With a Win32-based console application, you can call the functions in the Win32
application programming interface (API).

MORE INFORMATION
================

Because GRAPHICS.LIB and PGCHART.LIB do not ship with Visual C++, 32-bit
Edition, the API functions can be used for graphical output or screen
manipulation.

The following console sample illustrates how to use the API to change the
background color of output to the screen. For further examples of console
applications included with Visual C++ version 4.0, 5.0, and 6.0, see the CONGUI
and CONSOLE sample programs in the \MSDEV\SAMPLES\SDK\WIN32 directory, or online
help in versions 5.0 and 6.0. For examples of console applications included with
Visual C++ versions 1.0 and 2.x, see the CONGUI, CONSOLE, CONSOLEC, and INHERIT
sample programs in the \MSVCNT\SAMPLES directory.

Sample Code
-----------

   /* Compile options needed:  None
   */ 

   #include <windows.h>
   #include <stdio.h>

   int main( void )
   {
     HANDLE  hConsole;
     WORD    ForeColor = 0;
     WORD    BackColor;
     WORD    wAttributesOld;
     CONSOLE_SCREEN_BUFFER_INFO csbi;

     // **  Open the current console input buffer.
     if( ( hConsole = CreateFile(
                        "CONOUT$", GENERIC_WRITE | GENERIC_READ,
                        FILE_SHARE_READ | FILE_SHARE_WRITE,
                        0L, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0L) )
                    == (HANDLE) -1 ) {
         printf("\nError: Unable to open console.\n");
         return( -1 );
     }
     printf("\n");

     // **  Get and Save information on the console screen buffer.
     GetConsoleScreenBufferInfo( hConsole, &csbi );
     wAttributesOld = csbi.wAttributes;

     // **  Display different backgrounds.
     for( BackColor = 0; BackColor < 8 ; BackColor++ ) {
         SetConsoleTextAttribute( hConsole, (WORD) ( (BackColor << 4) |
                                  ForeColor) );
         printf(" XxXxXx ");
     }

     // **  Restore the foreground and background color attribute.
     SetConsoleTextAttribute( hConsole, wAttributesOld );
     return 1;
   }

Additional query words: 8.00 9.00

======================================================================
Keywords          : kbGenInfo kbVC100 kbVC200 kbVC210 kbVC400 kbVC500 kbVC600 kbArtTypeINF 
Technology        : kbVCsearch kbVC400 kbAudDeveloper kbvc100 kbVC500 kbVC600 kbVC200 kbVC210 kbVC32bitSearch kbVC500Search
Version           : :1.0,2.0,2.1,4.0,5.0,6.0
Issue type        : kbinfo

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