A Minimized Program Window That Is Hung (Is Not Responding) May Not Be Restored Correctly and a Second Minimized Window Appears

SYMPTOMS

A minimized window of a program that is hung (with a status of "Not Responding" in Windows Task Manager) may not be restored correctly when you click the Restore button. Also, while the program is not responding, a second minimized window may appear next to the original window. You can move the second window, but the first window remains where the screen has not been overwritten yet.

CAUSE

The Windows XP Ghost Window feature creates ghost windows on behalf of a program when the program does not respond correctly to window messages within several seconds and is considered to be hung. This feature may not correctly restore the properties of a minimized window, and may create a second minimized title bar window beside the original window but not overwrite it.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP.

Hotfix information

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows XP service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date Time Version Size File name Platform -------------------------------------------------------------------- 15-Jul-2003 21:01 5.1.2600.1247 1,677,056 Win32k.sys x86 15-Jul-2003 21:01 5.1.2600.1247 5,619,840 Win32k.sys IA-64

WORKAROUND

You can use the Application Compatibility Toolkit to create and install a custom Application Compatibility database to disable the Ghost Window feature for your program.

To create a custom Application Compatibility database:

MORE INFORMATION

The following information about the GetMessage function is documented for the Ghost Window feature in Windows XP. For more information, visit the following Microsoft Web site:

GetMessage Function

If a top-level window stops responding to messages for more than several seconds, the system considers the window to be hung and replaces it with a ghost window that has the same z-order, location, size, and visual attributes. This allows the user to move it, resize it, or even close the application. However, these are the only actions available because the application is actually hung. When in the debugger mode, the system does not generate a ghost window.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows XP Service Pack 2.

APPLIES TO

 © 2006 LBCI Corporation. All rights reserved Eng.Hanna Ata Lahoud