Cannot ALT+TAB Out of Non-Windows Application

 Last reviewed: November 21, 1994
Article ID: Q59579
The information in this article applies to:
  • Microsoft Windows operating system versions 3.0, 3.0a, 3.1, 3.11

SUMMARY

This article describes the reasons why you may be unable to switch from a non-Windows application in standard mode.

MORE INFORMATION

An inability to switch from a non-Windows application in standard mode can occur for any of the following reasons:

  • One or more of the Directly Modifies options is set in the PIF file for the application.
  • The application is trapping all keyboard input. The application must be closed to switch back to Windows.
  • The Prevent Program Switch option is selected in the PIF file for the application.
  • Shortcut keys normally used by Windows, such as ALT+TAB, are reserved for use by the application in the PIF file.
  • The wrong video mode is incorrectly selected in the PIF file.
  • Your video display is an EGA, and the driver EGA.COM is improperly installed in the AUTOEXEC.BAT file. Ensure that the file EGA.COM resides in the Windows system directory.
  • The non-Windows application is using a video mode that is not supported currently under Windows; therefore, Windows cannot save or restore the display when switching.

KBCategory: kbusage kbdisplay kbtshoot
KBSubcategory: win30 win31
Additional reference words: 3.00 3.00a 3.0 3.0a TSHOOT win30 3.10 3.11

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Last reviewed: November 21, 1994
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