little function

[Pirate]

Function DXSound_Init(Hwnd As Long) As Boolean
Set ds = dx.DirectSoundCreate(vbNullString)
    ds.SetCooperativeLevel Hwnd, DSSCL_PRIORITY
    DXSound_Init = True
End Function

guys I don't what's wrong with me !!!!
basically what does the last line of code mean ?
I've seen a lot of func. act like this

DXSound_Init = True

a mean why the function returns true ?(why not false)

*thanx for your time*

[hellswraith]

That function returns a boolean. It has to either be true or false.

Usually you will have more code than that if your returning a variable. True should signal success of some kind in the function. False would be returned if something in the function failed. This one you gave us for an example might as well have been a Sub.

One more reason I would do this, is for something like this:
MyFunction(DXSound_Init(Hwnd))

Where you want to pass in a bool variable to MyFunction and want to perform the DXSound_Init function first. This would take care of two at once...in a way.

[Pirate]

one more question

Function DXSound_LoadSound(SoundFileName As String) As DirectSoundBuffer
 
    Dim dsBuf As DSBUFFERDESC
    Dim dsBuffer As DirectSoundBuffer
    Dim WF As WAVEFORMATEX
    dsBuf.lFlags = DSBCAPS_CTRLVOLUME Or PS_CTRLFREQUENCY
    Set dsBuffer = ds.CreateSoundBufferFromFile(SoundFileName, dsBuf, WF)
    Set DXSound_LoadSound = dsBuffer 

End Function

now how about "DirectSoundBuffer" is that the returning value ??
(some told me this set the properities of the function , I don't know really )

thanx dude

[Pirate]

guys , help plz

[hellswraith]

I think that DirectSoundBuffer is an object that is in the DX library. Either that, or an enumeration of somekind. I have never messed with DX before, so I am probably wrong.

[Pirate]

thanx hellswraith for your replay
well , DirectSoundBuffer is an object in the DS(DirectSound) library.Anyhow , I'm not asking about where is it located .

The function works with or without using the variable "DirectSoundBuffer" , So why it's used ??