FIX: You cannot obtain information about specific events when you program against the DVD Nav control in Windows XP (912461)

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The following file is available for download from the Microsoft Download Center:
Download the WindowsXP-KB912461-x86-ENU.exe package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

File name	File version	File size	Date	Time	Platform
Qdvd.dll	6.5.2600.2831	386,048	21-Jan-2006	03:05	x86

EC_DVD_PROGRAM_CELL_CHANGE
// Parameters: ( ULONG, ULONG )
// Sent when current program ID or cell ID change
// lParam1 contains the new Program ID
// lParam2 contains the new Cell ID

EC_DVD_TITLE_SET_CHANGE           
// Parameters: ( BYTE, void )
// Sent when current VTS (Video Title Set) changes
// lParam1 contains the new VTSN (Video Title Set Number)

EC_DVD_PROGRAM_CHAIN_CHANGE   
// Parameters: ( WORD, void )
// Sent when current PGC (Program Chain) changes
// lParam1 contains the new PGCN (Program Chain Number)