io_pcopy.c

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/* console pcopy function */

#include "../fb.h"
#include "fb_private_console.h"

int fb_ConsolePageCopy( int src, int dst )
{
        fb_hConsoleGetHandle( FALSE );

        /* use current? */
        if( src < 0 )
                src = __fb_con.active;

        /* not allocated yet? */
        if( __fb_con.pgHandleTb[src] == NULL )
        {
        HANDLE hnd = fb_hConsoleCreateBuffer( );
        if( hnd == NULL )
                return fb_ErrorSetNum( FB_RTERROR_ILLEGALFUNCTIONCALL );
                else
                        __fb_con.pgHandleTb[src] = hnd;
        }

        /* use current? */
        if( dst < 0 )
                dst = __fb_con.visible;

        if( src == dst )
                return fb_ErrorSetNum( FB_RTERROR_OK );

        /* not allocated yet? */
        if( __fb_con.pgHandleTb[dst] == NULL )
        {
        HANDLE hnd = fb_hConsoleCreateBuffer( );
        if( hnd == NULL )
                return fb_ErrorSetNum( FB_RTERROR_ILLEGALFUNCTIONCALL );
                else
                        __fb_con.pgHandleTb[dst] = hnd;
        }

        /* do the copy */
        static COORD pos = { 0, 0 };

        CONSOLE_SCREEN_BUFFER_INFO csbi;
        GetConsoleScreenBufferInfo( __fb_con.pgHandleTb[src], &csbi );
        PCHAR_INFO buff = alloca( csbi.dwSize.X * csbi.dwSize.Y * sizeof( CHAR_INFO ) );

        ReadConsoleOutput( __fb_con.pgHandleTb[src], buff, csbi.dwSize, pos, &csbi.srWindow );

        GetConsoleScreenBufferInfo( __fb_con.pgHandleTb[dst], &csbi );
        WriteConsoleOutput( __fb_con.pgHandleTb[dst], buff, csbi.dwSize, pos, &csbi.srWindow );

        return fb_ErrorSetNum( FB_RTERROR_OK );
}