INFO: Using Win32 Scroll Bar APIs with Internet Explorer 4.x
Article ID: 188017
Article Last Modified on 9/1/1999
APPLIES TO
- Microsoft Internet Explorer 4.0 128-Bit Edition
- Microsoft Internet Explorer 4.01 Service Pack 2
- Microsoft Internet Explorer 4.01 Service Pack 1
This article was previously published under Q188017
SUMMARY
It is not possible to use Win32 scroll bar APIs such as GetScrollInfo with
a handle to an Internet Explorer's browser window. Additionally, Internet
Explorer's browser window does not respond to WM_VSCROLL and WM_HSCROLL
Windows messages.
The reason for this is that Internet Explorer paints its own scroll bar in
the client area of the browser window. Win32 APIs like GetScrollInfo and
scroll messages do not work because Internet Explorer is not using the
scroll bar provided by Win32.
MORE INFORMATION
Some applications attempt to find Internet Explorer's browser window handle
and use Win32 Scroll Bar APIs, such as GetScrollInfo, to get the current
position of the document displayed by Internet Explorer. This technique
does not work in the Internet Explorer versions listed above because it
paints.
Additional query words: kbnokeyword
Keywords: kbinfo KB188017