[RESOLVED] "Unable to find an entry point named 'GetForegroundwindow' in DLL 'User32.dll'."

Hello,

I don't know why I got the error.

Code:

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EntryPointNotFoundException was unhandled by user code

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Thanks for help.

Code:

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Private Declare Function SetForegroundwindow Lib "User32" (ByVal hwnd As IntPtr) As IntPtr
    Private Declare Function GetForegroundwindow Lib "User32.dll" () As IntPtr
    Private Declare Function SetActiveWindow Lib "user32" Alias "SetActiveWindow" (ByVal hwnd As Long) As Long
    Private Declare Function GetActiveWindow Lib "user32" Alias "GetActiveWindow" () As Long
Public Overrides Function Execute(ByVal xmlInput As System.Xml.XmlElement, ByVal oInputValues As System.Collections.IDictionary) As System.Xml.XmlElement
' ....

Dim handler As IntPtr
        handler = GetForegroundWindow() ' Error here
        SetActiveWindow(handler)

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Don't know where you got your declarations, but all of them should be Int32, and not IntPtr :

Code:

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Private Declare Function GetForegroundWindow Lib "user32.dll" () As Int32
Private Declare Function SetForegroundWindow Lib "user32.dll" (ByVal hwnd As Int32) As Int32
Private Declare Function SetActiveWindow Lib "user32.dll" (ByVal hwnd As Int32) As Int32
Private Declare Function GetActiveWindow Lib "user32.dll" () As Int32

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I'd suggest you get a copy of API Viewer 2004

Also, APIs are case sensitive, as they originate from C / C++ - so that may also cause a problem

Here used Intptr.
http://www.pinvoke.net/default.aspx/...etactivewindow
Which one is right?

Like Hannes said, entry point names are case sensitive. That is your only issue.

Code:

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Private Declare Function GetForegroundWindow Lib "User32.dll" () As IntPtr

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Yep, it seems I was smoking something that affected my braincells today. IntPtr is correct, Ddh! Hannes! :)

Sorry zhshqzyc - I'm just human afterall :blush: LOL!