Module Help...[resolved]

Hey, thanks for stopping by, i have a slight problem with my module, i cannot get my forms to get the resulting string from it, how would i go about doing it ?

Here is my Forms code -

VB Code:

Private Sub Command1_Click()
Call getWinampWindow
MsgBox NowPlayingStr
End Sub

And here is my Module code (Feel free to re-use this code if needbe, its fully fnctioning)

VB Code:

Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Dim lHandle As Long
Dim NowPlayingStr As String
 
Function getWinampWindow()
lHandle = FindWindow("Winamp v1.x", vbNullString)
If lHandle > 0 Then
    Dim lRet As Long
    Dim sTitle As String * 256
    Dim sCaption As String
    lRet = GetWindowText(lHandle, sTitle, Len(sTitle))
    sCaption = Left(sTitle, InStr(1, sTitle, vbNullChar, vbTextCompare) - 10)
    Do
        If IsNumeric(Left(sCaption, 1)) = True Or Left(sCaption, 1) = "." Or Left(sCaption, 1) = " " Then
        sCaption = Right(sCaption, Len(sCaption) - 1)
        Else
        Exit Do
        End If
    Loop
    Do
        If IsNumeric(Right(sCaption, 1)) = True Or Right(sCaption, 1) = ")" Or Right(sCaption, 1) = " " Or Right(sCaption, 1) = ":" Then
        sCaption = Left(sCaption, Len(sCaption) - 1)
        ElseIf Right(sCaption, 1) = "(" Then
        sCaption = Left(sCaption, Len(sCaption) - 1)
        Exit Do
        Else
        Exit Do
        End If
    Loop
    NowPlayingStr = sCaption
Else
    NowPlayingStr = "Winamp 6 Not Found"
End If
End Function

Any suggestions as to how to get this to work ?

EDIT : Final Code in Last post

Try changing Dim to Public.

When declaring variables in an event, use Dim.
When declaring variables at the form level, use Private
When declaring variables at the module level, use Public

Ok, that didn't work, but i have found a workaround, by simpling making the MsgBox pop-up from the module itself... a little un-orthodox but still, it works.

here is the code i am now using, anymore answers are welcome :)

VB Code:

'Form1
Private Sub Command1_Click()
Call getWinampWindow
End Sub

and the module -

VB Code:

'Module1
Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Public lHandle As Long
Public NowPlayingStr As String
 
Function getWinampWindow()
lHandle = FindWindow("Winamp v1.x", vbNullString)
If lHandle > 0 Then
    Dim lRet As Long
    Dim sTitle As String * 256
    Dim sCaption As String
    lRet = GetWindowText(lHandle, sTitle, Len(sTitle))
    sCaption = Left(sTitle, InStr(1, sTitle, vbNullChar, vbTextCompare) - 10)
    Do
        If IsNumeric(Left(sCaption, 1)) = True Or Left(sCaption, 1) = "." Or Left(sCaption, 1) = " " Then
        sCaption = Right(sCaption, Len(sCaption) - 1)
        Else
        Exit Do
        End If
    Loop
    Do
        If IsNumeric(Right(sCaption, 1)) = True Or Right(sCaption, 1) = ")" Or Right(sCaption, 1) = " " Or Right(sCaption, 1) = ":" Then
        sCaption = Left(sCaption, Len(sCaption) - 1)
        ElseIf Right(sCaption, 1) = "(" Then
        sCaption = Left(sCaption, Len(sCaption) - 1)
        Exit Do
        Else
        Exit Do
        End If
    Loop
    NowPlayingStr = sCaption
    MsgBox NowPlayingStr
Else
    NowPlayingStr = "Winamp 6 Not Found"
    MsgBox NowPlayingStr
End If
End Function

as the code you have in your module is a Funtion, it needs to return a value, but to do that you have to set the function to have a value within the function, so what you should do is get rid of the variable NowPlayingStr and wherever you mention it in the code (like NowPlayingStr = sCaption), replace it with getWinampWindow (so it would say getWinampWindow = sCaption) and then in your code instead of saying

VB Code:

Call getWinampWindow
msgbox NowPlayingStr

just use:

VB Code:

msgbox getWinampWindow()

Quote:

---

Originally Posted by Arachnid13

as the code you have in your module is a Funtion, it needs to return a value,

---

Good point Arachnid13. I missed that.

thegreatone: Change your function to Public Function getWinampWindow() As String and you should get your return string.

Finished, your both getting good rep. thanks so much.

Final Code-

VB Code:

'in a module
Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Public lHandle As Long
 
Function getWinampWindow()
lHandle = FindWindow("Winamp v1.x", vbNullString)
If lHandle > 0 Then
    Dim lRet As Long
    Dim sTitle As String * 256
    Dim sCaption As String
    lRet = GetWindowText(lHandle, sTitle, Len(sTitle))
    sCaption = Left(sTitle, InStr(1, sTitle, vbNullChar, vbTextCompare) - 10)
    Do
        If IsNumeric(Left(sCaption, 1)) = True Or Left(sCaption, 1) = "." Or Left(sCaption, 1) = " " Then
        sCaption = Right(sCaption, Len(sCaption) - 1)
        Else
        Exit Do
        End If
    Loop
    Do
        If IsNumeric(Right(sCaption, 1)) = True Or Right(sCaption, 1) = ")" Or Right(sCaption, 1) = " " Or Right(sCaption, 1) = ":" Then
        sCaption = Left(sCaption, Len(sCaption) - 1)
        ElseIf Right(sCaption, 1) = "(" Then
        sCaption = Left(sCaption, Len(sCaption) - 1)
        Exit Do
        Else
        Exit Do
        End If
    Loop
    getWinampWindow = sCaption
Else
    getWinampWindow = "Winamp 6 Not Found"
End If
End Function

It is simply accessed like this -

VB Code:

msgbox getWinampWindow

Do you think this is worth posting in the codebank ?

Quote:

---

Originally Posted by thegreatone

Do you think this is worth posting in the codebank ?

---

If you are going to do that, make sure you include a detailed explanation of what your code does, and how it does it.