Protocols/MSNP/Activities/SDK/Techref/Promo/Url
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Calling the MSN Messenger Client from a URL
You can invoke the MSN® Messenger client by adding a URL to a Web page. This URL redirects the user's browser to a Web page on the MSN Messenger Web site, which calls the MSN Messenger client application.
The URL to use is the following: http://messenger.msn.com/Resource/games.aspx?appID=APPID.
In the preceding URL, the variable AppID is passed to a Web page. The AppID variable is used to uniquely describe the Launch Site application. The behavior of the MSN Messenger client when it is invoked depends on the following items:
- The value of the variable that you pass to the ActiveX® control
- The state of the MSN Messenger client at the time the ActiveX control is called (for example, whether the MSN Messenger client is active or not)
Passing an e-mail address in the URL is not supported in this release, but may be supported in a future release.
For more information about the AppID variable, see Using the MSN Messenger Parameters.