add Automation Test Project
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68
Automation/ClassClipboard.vb
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68
Automation/ClassClipboard.vb
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Imports System.Runtime.InteropServices
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Public Class ClassClipboardWatcher
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Inherits NativeWindow
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Implements IDisposable
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Private Class Win32
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<DllImport("user32", EntryPoint:="SetClipboardViewer")>
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Public Shared Function SetClipboardViewer(ByVal hWnd As IntPtr) As IntPtr
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End Function
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End Class
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Const WM_DRAWCLIPBOARD As Integer = &H308
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Public Event ClipboardChanged As EventHandler(Of IDataObject)
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Public Shared Singleton As New ClassClipboardWatcher
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Private _handle As IntPtr
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Private Sub New()
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MyBase.CreateHandle(New CreateParams)
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_handle = Win32.SetClipboardViewer(Handle)
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End Sub
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Protected Overrides Sub WndProc(ByRef m As Message)
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Select Case m.Msg
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Case WM_DRAWCLIPBOARD
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Dim oData As IDataObject = Clipboard.GetDataObject
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RaiseEvent ClipboardChanged(Me, oData)
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End Select
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MyBase.WndProc(m)
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End Sub
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#Region "IDisposable Support"
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' Für diese Klasse ist korrekte Ressourcenbereinigung besonders wichtig, da
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' mit systemübergreifenden Ressourcen gearbeitet wird
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' So ermitteln Sie überflüssige Aufrufe
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Private disposedValue As Boolean = False
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Protected Overridable Sub Dispose(ByVal disposing As Boolean)
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If Not disposedValue Then
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If disposing Then
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' TODO: Verwaltete Ressourcen freigeben, wenn sie explizit
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' aufgerufen werden
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End If
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MyBase.DestroyHandle()
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Dim H As IntPtr = Win32.SetClipboardViewer(_handle)
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End If
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disposedValue = True
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End Sub
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' Dieser Code wird von Visual Basic hinzugefügt, um das Dispose-Muster
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' richtig zu implementieren.
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Public Sub Dispose() Implements IDisposable.Dispose
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' Sie sollten diesen Code nicht ändern, sondern stattdessen ihren
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' Bereinigungscode oben in
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' Dispose(ByVal disposing As Boolean) einfügen.
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Dispose(True)
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GC.SuppressFinalize(Me)
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End Sub
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Protected Overrides Sub Finalize()
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MyBase.Finalize()
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Dispose(False)
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End Sub
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#End Region
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End Class
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