Controls.previous method

项目
4/26/2023

[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The previous method sets the current item to the previous item in the playlist.

Syntax

Controls.previous()

Parameters

This method has no parameters.

Return value

This method does not return a value.

Remarks

If the playlist is on the first entry when previous is invoked, the last entry in the playlist will become the current one.

Examples

The following example creates an HTML BUTTON element that uses previous to move to the preceding item in the current playlist. The Player object was created with ID = "Player".

<INPUT TYPE = "BUTTON"  ID = "PREV"  NAME = "PREV"  VALUE = "|<<"
    onClick = "

        /* Check first to be sure the operation is valid. */
        if (Player.controls.isAvailable('Previous'))

            /* Move to the preceding item in the playlist. */
            Player.controls.previous();
">

Requirements

Requirement	Value
Version	Windows Media Player version 7.0 or later.
DLL	Wmp.dll

通过