colin@la.excelan.com (Colin Goldstein) (01/10/91)
I have a question about using VioSetMode. I find that it only works
some times. If I have the display in 80*50 mode and use VioSetMode
to change it to 80*25, it works. However, if I'm in other modes such
as 80*34 it does not work at all. And if I'm in 80*12 or 80*43, it
only partially works. Although the screen changes to the correct
number of lines, the font is not the default font.
I have enclosed the code I'm using to test this. Any help would be
appreciated.
Colin
------------ CODE ------------------ CODE --------------------------
#define INCL_BASE
#define INCL_NOPM
#include <os2.h>
main()
{
VIOMODEINFO viomi;
BYTE bCell[2];
bCell[0] = 0x20; /* space character */
bCell[1] = 0x07; /* white attribute (EGA) */
// VioScrollDn(0, 0, 0xFFFF, 0xFFFF, 0xFFFF, bCell, 0);
// VioSetCurPos(0, 0, 0);
viomi.cb = sizeof(viomi);
VioGetMode(&viomi, 0);
viomi.row = 25;
viomi.col = 80;
VioSetMode(&viomi, 0);
}
------------- CODE ----------------------- CODE ----------------------
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\-------------------------------------------------------------------/cfreas@eeserv1.ic.sunysb.edu (Terry Freas) (01/11/91)
In article <2593@excelan.COM> colin@la.excelan.com (Colin Goldstein) writes: >I have a question about using VioSetMode. I find that it only works >some times. If I have the display in 80*50 mode and use VioSetMode >to change it to 80*25, it works. However, if I'm in other modes such >as 80*34 it does not work at all. And if I'm in 80*12 or 80*43, it >only partially works. Although the screen changes to the correct >number of lines, the font is not the default font. > >I have enclosed the code I'm using to test this. Any help would be >appreciated. > > [enclosed code deleted] I have also noticed that I can set a text session to 80*60 using 'mode 80,60'. However, the highest VioSetMode will achieve is 80*50. Errors occur exceeding it. Strange... -- Jeremy Wohl / wohl@max.physics.sunysb.edu / cfreas@csserv1.ic.sunysb.edu
rommel@lan.informatik.tu-muenchen.dbp.de (Kai-Uwe Rommel) (01/15/91)
In article <2593@excelan.COM> colin@la.excelan.com (Colin Goldstein) writes: >I have a question about using VioSetMode. I find that it only works >some times. If I have the display in 80*50 mode and use VioSetMode >to change it to 80*25, it works. However, if I'm in other modes such >as 80*34 it does not work at all. And if I'm in 80*12 or 80*43, it >only partially works. Although the screen changes to the correct >number of lines, the font is not the default font. > viomi.cb = sizeof(viomi); > VioGetMode(&viomi, 0); > > viomi.row = 25; > viomi.col = 80; > VioSetMode(&viomi, 0); Try setting the hres and vres fields (screen pixel width/height) to to appropriate values. For example, while 80x25 and 80x50 both work with 720x400, 80x34 works with 720x480! This should solve your problem. Always calculate hres and vres from row/col and the font size (9x16, 9x14 and 9x8); hres is always 720 on VGA, vres has to be set by you. Kai Uwe Rommel -- /* Kai Uwe Rommel, Munich ----- rommel@lan.informatik.tu-muenchen.dbp.de */ DOS ... is still a real mode only non-reentrant interrupt handler, and always will be. -Russell Williams (MS)