Final scan mode is used instead of preview scan mode when you use a scanner with Windows XP (832344)


The information in this article applies to:

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional

SYMPTOMS

When you use a scanner to scan an image in preview mode in Microsoft Windows XP, the scan may be completed in final mode. As a result, when you try to preview a scan, it takes a while for the scanned image to display because instead of scanning the image in preview mode (typically fast), the scanner scans the image in the final scan mode (typically slower).

CAUSE

This issue occurs because the Windows XP operating system does not correctly set the flag that tells the scanner which mode to use. The Windows Image Acquisition (WIA) scanner micro driver is not called to do a preview scan because it cannot differentiate preview mode from final scan mode.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix 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 hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. 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/contactus/?ws=support

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 usual 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 hotfix 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 
   ------------------------------------------------------------------
   24-Nov-2003  19:41  5.1.2600.1321  415,232  Wiaacmgr.exe  x86   
   24-Nov-2003  21:21  5.1.2600.1321  449,536  Wiadefui.dll  x86
   24-Nov-2003  19:42  5.1.2600.1321  963,072  Wiaacmgr.exe  IA-64
   24-Nov-2003  22:03  5.1.2600.1321  911,360  Wiadefui.dll  IA-64

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.

MORE INFORMATION

When you scan an image, the MicroEntry(..) function in a WIA micro driver is supposed to be called by the flatbed driver with the argument lCommand = CMD_SETSCANMODE to notify the micro driver that it wants a preview or a final scan. But, regardless of whether you try to do a preview or a final scan, the MicroEntry(..) function is always called with the arguments lCommand = CMD_SETSCANMODE, and pValue->lVal = SCANMODE_FINALSCAN (final scan mode). This problem occurs because the WIA scanning wizard sets the WIA_DPS_PREVIEW property on the driver item instead of the root item. As a result, the BOOL CWIADevice::IsPreviewScan function always returns the value FALSE, and the scan is completed in final scan mode.

For additional information about WIA, click the following article number to view the article in the Microsoft Knowledge Base:

270157 Windows Image Acquisition

For additional information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the Standard Terminology That Is Used to Describe Microsoft Software Updates

Modification Type:MinorLast Reviewed:10/28/2005
Keywords:kbHotfixServer kbQFE kbQFE kbWinXPsp2fix kbWinXPpreSP2fix kbfix kbbug KB832344 kbAudEndUser
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