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I can't switch!

Posted on 1999-01-28
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Last Modified: 2010-04-06
I have a DOS Pascal program running in MS-DOS Full Screen Mode. And this DOS program calls a Windows Delphi program.

After closing the Delphi program, the screen remains in Windows and I have to press ALT-TAB to switch back to DOS Full Screen Mode. This, of course, does not happen when I execute the DOS program in Window(Not Full Screen) MS-DOS Mode.

My question is, is it possible to, say using SendMessage(...), to maximize a full screen MS-DOS window, instead of having me pressing ALT-TAB? I've tried but failed...*sigh*

Any hint?
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Question by:foxvision
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Madshi earned 150 total points
ID: 1363666
Hi foxvision,

try this one:

procedure PressAltTab;
begin
  keybd_event(VK_MENU,0,0,0);
  keybd_event(VK_TAB, 0,0,0);
  keybd_event(VK_TAB, 0,KEYEVENTF_KEYUP,0);
  keybd_event(VK_MENU,0,KEYEVENTF_KEYUP,0);
end;

Regards, Madshi.
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Expert Comment

by:philipleighs
ID: 1363667
Or prehaps you could call FindWindow with the caption of your dos program, then ShowWindow or SetForegroundWindow.

Cheers,
Phil

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Author Comment

by:foxvision
ID: 1363668
Wow! It works in Delphi 4. Can I used it in Delphi 1 as well?

Good Days and Thanks,
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LVL 20

Expert Comment

by:Madshi
ID: 1363669
No, sorry. "keybd_event" is a win32 function. So you need at least D2.

Regards, Madshi.
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