BASS_ChannelSetPosition64

[Rocco]

Hi to all,

I am having problem in using BASS_ChannelSetPosition64.
In the documentation it does not appear and I do not know how to use it.
In VB6 works fine in CustLoop project example but when I try to use it in Visual foxpro 9
I get the error "cannot find the entry point Bass_ChannelSetPosition64 in the DLL".

This is the declare in vfp: Declare long BASS_ChannelSetPosition64 IN "bass.dll" long,long,long,long
I can play music file, get bitrate and frequency but it is not possible to set the position.

Can you help me please?

Thank you.
Regards


 

[Ian @ un4seen]

That BASS_ChannelSetPosition64 function is a VB6-specific alias of the BASS_ChannelSetPosition function that splits the 64-bit "pos" parameter into 2x 32-bit parameters because VB6 doesn't support 64-bit integers. It's defined in the BASS.BAS file like this:

Code Select Expand

Declare Function BASS_ChannelSetPosition64 Lib "bass.dll" Alias "BASS_ChannelSetPosition" (ByVal handle As Long, ByVal pos As Long, ByVal poshigh As Long, ByVal mode As Long) As Long

And it's used in a VB6 version of BASS_ChannelSetPosition with a single 32-bit "pos" parameter like this:

Code Select Expand

Function BASS_ChannelSetPosition(ByVal handle As Long, ByVal pos As Long, ByVal mode As Long) As Long
BASS_ChannelSetPosition = BASS_ChannelSetPosition64(handle, pos, 0, mode)
End Function

I'm not familiar with Visual foxpro 9, so unfortunately I can't really offer any advice on it, but hopefully you can work something out from this info.

[Rocco]

Thank You very much,

VFP9 has the same problem of VB6, it can't manage int64 variable then the VB6 workaround is perfect.
What I do not understand is the meaning of the error, it seems that the function is not presente in the dll.
Anyway I try to follow exactly the VB6 example...

[Ian @ un4seen]

BASS_ChannelSetPosition64 is just an alias of BASS_ChannelSetPosition for VB6. When you call BASS_ChannelSetPosition64 in VB6, you're actually calling BASS_ChannelSetPosition in BASS.DLL.

Hopefully, VFP9 has an alias option too, but if not then you could just declare BASS_ChannelSetPosition with the 64-bit "pos" parameter split into 2x 32-bit parameters (note you would need to add an extra parameter to your BASS_ChannelSetPosition calls too).