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Q43260: Vertical Scroll Inactive with MODE CO40 and Dual Monitors |
/pubs/pc/reference/microsoft/kb/Q43260/ |
Article: Q43260
Version(s): 2.x
Operating System: MS-DOS
Flags: ENDUSER | S_C buglist2.20
Last Modified: 18-APR-1989
While debugging a program using Microsoft CodeView and dual monitors,
the vertical scroll bar is disabled when the video mode is set to
40-line color text. This occurs if the mode is set either at the
command line
MODE CO40
or from within a program as follows:
_setvideomode(_TEXTC40);
The scroll bar remains inactive until the mode is changed. This
problem does not occur on a single monitor system or in any other
video modes.
Microsoft has confirmed this to be a problem in Version 2.20. We are
researching the problem and will post new information as it becomes
available.
The following program demonstrates the problem:
#include <graph.h>
void main (void)
{
_setvideomode(_TEXTC40);
_setvideomode(DEFAULTMODE);
}