Browser Differences - Autodesk 15606-011408-9330 - MAPGUIDE R6.3 SITE LIC-UPG R6 Developer's Manual

Browser Differences

The following table summarizes the basic differences between how Netscape
Navigator and Internet Explorer handle events:
Netscape Navigator
For Netscape Navigator, Autodesk
MapGuide provides an observer applet
that you embed in your application
using the <APPLET> tag.
For Autodesk MapGuide Viewer Plug-In,
this applet is called:
MapGuideObserver6.class
For Autodesk MapGuide Viewer, Java
Edition, it is called:
MapGuideObserver6J.class
You can use the same instance of the
observer applet for all events.
To call an Autodesk MapGuide method
that triggers an event, you pass the
Autodesk MapGuide observer as a
parameter.
Event Observer Set Methods
There are some MGMap methods whose sole function is to allow you to set an
observer for a specific event. For example, when the map view changes (for
example, in response to a user panning or zooming), you can set the observer
for the onViewChanged by creating a function called onLoad (a browser
event) and inserting the MGMap.setViewChangedObserver method to set
the observer for the onViewChanged event. You can do this for each of the
events you want to handle. Note that specifying an observer is not required
for all events—just for the events you want to handle.
Internet Explorer
For Internet Explorer, you write a few lines
of VBScript code that tell Internet
Explorer the name of the event handler.
You must create a separate event handler
for each type of event you want to handle.
Internet Explorer knows how to find the
event handler without being passed its
name because it assumes the event han-
dler name will match the event it is
handling.
Working with Event Handlers
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