Microsoft KB Archive/59380

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How to Do a Print Screen Within a Program

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Q59380

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The information in this article applies to:


 * The C Run-Time (CRT), included with:
 * Microsoft C for MS-DOS, versions 5.1, 6.0, 6.0a, and 6.0ax
 * Microsoft Visual C++, versions 1.0, 1.5
 * Microsoft C/C++ for MS-DOS, version 7.0

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SUMMARY
The code below demonstrates how to do a print screen from within a program under MS-DOS. This is done by executing Interrupt 5 within a program.

MORE INFORMATION
The interrupt service directs all its output to the default printer. The print-screen service prints text or graphics. In graphics mode, GRAPHICS.COM must be loaded before invoking the print-screen service.

Interrupt 5 does not return any values but the status code is available at memory location 0050:0000. The values are as follows:

  00   No error occurred 01  Indicates that a print-screen operation is in progress FF  The previous print screen was not successful.

Sample Code
 #include   #include 

void main (void) {    int  *result; union REGS inregs, outregs;

/* inregs and outregs are never used but necessary for the int86 function. */

puts(&quot;This is a test of prtscr function.&quot;); int86(0x5, &inregs, &outregs);

result = (int *) 0x00500000; switch( *result ) {       case 0: puts(&quot;No error occurred.&quot;); break; case 1: puts(&quot;Print Screen in progress....&quot;); break; case 0xFF: puts(&quot;ERROR occurred during print screen&quot;); break; } } Additional query words: kbinf 5.10 6.00 6.00a 6.00ax 7.00 1.00 1.50

Keywords : kb16bitonly

Issue type :

Technology : kbVCsearch kbAudDeveloper kbCRT