typedef GVI_BRUSH (*CREATELINEARGRADIENTBRUSH)( POINT, POINT, int, int );
CREATELINEARGRADIENTBRUSH GVI_CreateLinearGradientBrush=(CREATELINEARGRADIENTBRUSH)(0x449ED630+1); //w580 r8be001 generic


    POINT p[2];
    p[0].x = 0;
    p[0].y = 0;
    p[1].x = dispwidth;
    p[1].y = dispheight; 

    GVI_BRUSH brush = GVI_CreateLinearGradientBrush( p[0], p[1], 0xFFFF0000, 0xFF00FF00 );
    GVI_FillRectangle( gc, 0, 0, dispwidth, dispheight, brush ); 
    GVI_Delete_GVI_Object(&brush);