Grouplab Web Page Thumbnail Control

The Grouplab Web Page Thumbnail control is designed to produce a thumbnail image of a particular web site. While this functionality is offered through Microsoft's own webview control (shdocvw.dll), our control offers the following functions that were required for our applications.

  • automatically fetches thumbnail for a given URL, without requiring the user to create an Internet shortcut

  • uses halftone image stretching (when available in windows NT/2000) to produce higher quality scaling

  • creates a StdPicture object (IPictureDisp), allowing image to be utilized in any .picture contexts (picture boxes, imagelists, loading/saving bmps)

 

Properties

Only non-standard ActiveX control properties are documented here.
Property Access Description
Web Address Get, Put By Value The URL to be fetched to produce the thumbnail image
Picture Get By Value The StdPicture object taken from the thumbnail image.

Methods

None - thumbnail produced immediately when 'WebAddress' property is modified.

Events

Only non-standard ActiveX control events are documented here.
Event Parameters Description
OnThumbnailReady None The .Picture property has been updated with a newly scaled thumbnail. This may occur because the 'Web Address' property has changed, or the thumbnails width and height have changed.

Samples

See sample projects included with the release.

 

License Terms