wm9 equalizer

[ifdnrg]

im trying to add crossfade to items in a loaded playlist


Dim playereq As WMPLib.IWMPEqualizerSettingsCtrl
playereq.crossFade = True

this builds ok bt breaks with

"
An unhandled exception of type System.NullReferenceException occurred in bs_playlists.exe

Additional information: Object reference not set to an instance of an object.

"
Can anyone help?

 

[AndreRyan]

The object needs to be created if the function isnt Shared

Dim Playereq As New WMPLib.IWMPEqualizerSettingsCtrl Object Reference
Dim Playereq As WMPLib.IWMPEqualizerSettingsCtrl Nothing

 

[ifdnrg]

thanks for the quick response

with that snippet (used in onformLoad)

Object Reference
Dim Playereq As New WMPLib.IWMPEqualizerSettingsCtrl    
Playereq.crossFade = True

gives me : New cannot be used on an interface.



Ive also tried WMPLib.WMPEqualizerSettingsCtrl but wasnt sure what the differenece between IWMP and WMP


thanks

 

[Volte]

If it is prefixed with an "I" it means it is an interface. There is no real functionality to it; its just a "shell" of a class that consists of the declarations of all of the properties and methods, but no code. In your case, you need to use the one without the "I" in front.

I suggest you read about polymorphism and other OOP concepts in your MSDN if you want to really understand it.

 

[mobileh1]

any followup to this? I cannot construct the

WMPLib.IWMPEqualizerSettingsCtrl

obeject without a runtime exception...

Thanks

 

[superdude]

I have the same problem.... i want to use the equalizer in the wmp9 usercontrol have tried everything here but it dosent work....

Help!!!