PRB: Scroll Bars Appear on Active Desktop Item

ID: Q183443

The information in this article applies to:

Microsoft Internet Explorer (Programming) versions 4.0, 4.01

SYMPTOMS

Scroll bars appear on an Active Desktop Item even though the item has been sized exactly to fit a fixed size image, ActiveX control, or applet. The fixed size element never seems to occupy the entire space of the HTML body.

CAUSE

In HTML pages, spaces and carriage returns (CRs) are considered text characters, and text characters have descent -- space below the baseline. This causes a small section of the body to always appear underneath any fixed size elements in the page or desktop item.

RESOLUTION

Change the HEIGHT attribute of the Desktop ITEM in the CDF file to be a few pixels bigger.

-or-

Remove any spaces or carriage returns from the HTML file.

STATUS

This behavior is by design.

MORE INFORMATION

This problem can be observed in the following sample CDF file and corresponding HTML file for a desktop item:


<?XML VERSION="1.0"?>
<CHANNEL>
   <ITEM HREF="http://example.microsoft.com/desktopitem.htm">
      <TITLE>My Fixed Size Image Component</TITLE>
      <USAGE VALUE="DesktopComponent">
         <WIDTH VALUE="300" />
         <HEIGHT VALUE="200" />
      </USAGE>
   </ITEM>
</CHANNEL>

<HTML>
<BODY>
<IMG SRC="xmple.jpg" width="300" height="200">
</BODY>
</HTML>

To resolve this problem, provide a little extra space in the Desktop Item's CDF file by changing the <HEIGHT> tag to the following:


<HEIGHT VALUE="305" />

-or- Remove all white space from the HTML file like so:


<HTML><BODY><IMG SRC="xmple.jpg" width="300" height="200"></BODY></HTML>

REFERENCES

For additional information, please see the following article in the Microsoft Knowledge Base:

Q183328 BUG: Empty Vertical Scroll Bar Space On Desktop Item

Additional query words:

Keywords : InetSDKActiveDeskt
Version : WINDOWS:4.0,4.01
Platform : WINDOWS
Issue type : kbprb