wm9 equalizer

[ifdnrg]

i'm 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 isn't 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.

 

 

 

I've 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; it's 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!!!