Article: Q69895
Product(s): Microsoft Windows Software Development Kit
Version(s): WINDOWS:3.0,3.1
Operating System(s):
Keyword(s):
Last Modified: 06-NOV-1999
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The information in this article applies to:
- Microsoft Windows Software Development Kit (SDK) versions 3.0, 3.1
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SYMPTOMS
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In Microsoft Windows enhanced mode, when an application calls the OpenIcon or
ShowWindows functions to activate a full-screen MS-DOS application from an icon,
the activation fails. These functions perform as documented in real and standard
mode.
RESOLUTION
==========
To avoid this problem, simulate the result of an ALT+TAB key combination on the
MS-DOS application icon: Send a WM_ACTIVATE message to the MS-DOS application,
and then specify its handle in a call to ShowWindow function. For example:
SendMessage(hDOSApp, WM_ACTIVATE, 1, MAKELONG(hDOSApp, TRUE));
ShowWindow(hDOSApp, SW_SHOWNORMAL);
When the application sends the WM_ACTIVATE message, wParam is set to 1 because
the application is being invoked by simulating the keyboard. The high-order word
of lParam is set to TRUE (non-zero) because the MS-DOS application is
represented by an icon.
The method works in all three Windows modes for windowed and full- screen MS-DOS
applications.
Additional query words: 3.00 3.10
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Keywords :
Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 kbWinSDK310
Version : WINDOWS:3.0,3.1
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