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POHow can I make this function not generate a "doesn't return a value on all paths" warning?
 

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  1. POHow can I make this function not generate a "doesn't return a value on all paths" warning?
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    <p>I realize this is a very specific question, and not very helpful outside of this scenario, although I am sure it applies to other questions with the same problem. I have a function to recursively search through windows (and their child windows) to find specific ones, it works exactly as expected, however it causes "function doesn't return a value on all paths" warning. This is the only warning in my entire program, and although it might be silly, I'm interested in knowing if there is a way to stop this error from occurring, but still allowing the function to work properly.</p> <pre><code> Public Function FindQWidgetWindows() As Integer Dim hWndStart As Integer = 0 Dim WindowText As String = "*" Dim Classname As String = "QWidget" Dim hwnd As Integer Dim sWindowText As String Dim sClassname As String Dim r As Integer Static level As Integer If level = 0 Then If hWndStart = 0 Then hWndStart = GetDesktopWindow() End If level = level + 1 hwnd = GetWindow(hWndStart, GW_CHILD) Do Until hwnd = 0 Call FindQWidgetWindows() 'Get the window text and class name' sWindowText = Space$(255) r = GetWindowText(hwnd, sWindowText, 255) sWindowText = Microsoft.VisualBasic.Left(sWindowText, r) sClassname = Space$(255) r = GetClassName(hwnd, sClassname, 255) sClassname = Microsoft.VisualBasic.Left(sClassname, r) If (sWindowText Like WindowText) And (sClassname Like Classname) Then Dim aRECT As RECT Dim hwndInt As Int32 = hwnd GetWindowRect(hwndInt, aRECT) FindQWidgetWindows = hwnd 'uncommenting the next line causes the routine to' 'only return the first matching window.' 'Exit Do' End If hwnd = GetWindow(hwnd, GW_HWNDNEXT) Loop level = level - 1 End Function </code></pre>
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      1. POHow can I make this function not generate a "doesn't return a value on all paths" warning?
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    1. COLet me respond to your comments, and clarify. First, thanks for your answers. However, I understand WHY it's giving the warning, I just haven't been able to fix the warning. @paxdiablo - yes, but if I make it a sub, it won't work - in fact it'll return an error on the line "FindQWidgetWindows = hwnd" @Shoban that's sort of the behavior I wanted, if it finds a window it returns the value, if it doesn't it shouldn't return anything (or rather I suppose, I should be returning Nothing)
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      1. POHow can I make this function not generate a "doesn't return a value on all paths" warning?
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