onopenstatechange Event

Fires when the Media Bar player changes its open state.

dhtml语法

Event property mediaBar.onopenstatechange = handler JScript only
mediaBar.onopenstatechange = GetRef("handler") Visual Basic Scripting Edition (VBScript) 5.0 or later only
Named script <SCRIPT FOR = mediaBar EVENT = onopenstatechange> Internet Explorer only

Event Information

Bubbles No
Cancels No
To invoke
Attempt to open media content in the media player.
Attempt to change the media content playing in the media player.
Default action Initiates any action associated with this script.

Available Properties

Available Properties
srcelement

remarks

the media bar player's open state changes as it locates and loads playlists, connects to servers hosting media content, acquires codecs for media playback, and so on. to handle events related to playback of media items, use onplaystatechange.
if multiple instances of the mediabar behavior run concurrently, only one of them receives event notification, even though all instances have access to media item attributes and information about the open and play states. developers are encouraged to avoid designs that employ multiple instances of the behavior.
although the event object is theoretically available in event notifications from onopenstatechange and onplaystatechange, it does not contain or provide useful information if queried. instead, event handlers should query the openstate and playstate properties to return player state information.

DHTML代码范例

In the following example, HTML in the Media Bar content area is updated with the media's open state information when the onopenstatechange event fires. Because the openState and playState properties return an integer, the function in this example accesses an array in order to return a text description. The array is not shown on this page, but you can see it by clicking the Show Me sample and viewing the source code.
<SCRIPT>
.
.
.
function open_state_handle() {
// Return open state as integer and access the array to return the text associated
// with that integer
div_Openstate.innerText += divMedia.openState + '  ' + open_array[divMedia.openState]
+ '<BR>';
}
.
.
.
</SCRIPT>
<BODY>

<DIV style="behavior:url(#default#mediaBar)" OnOpenStateChange="open_state_handle()"
id="divMedia"></DIV>
</BODY>
This feature requires Microsoft® Internet Explorer 6 or later. Click the following icon to install the latest version. Then reload this page to view the sample.

applies to

mediaBar

更多语法参考

openState