protected override void WndProc(ref Message m)
{
switch ((ClipBoardHandleOptions)m.Msg)
{
case ClipBoardHandleOptions.WM_CREATE:
{
this.hWndNextWindow = ClipBoardConHelpers.SetClipboardViewer(this.Handle);
break;
}
case ClipBoardHandleOptions.WM_CHANGECBCHAIN:
{
if (m.WParam == hWndNextWindow)
{
hWndNextWindow = m.LParam;
}
else if (hWndNextWindow != IntPtr.Zero)
{
ClipBoardConHelpers.SendMessage(hWndNextWindow, m.Msg, m.WParam, m.LParam);
}
break;
}
case ClipBoardHandleOptions.WM_DRAWCLIPBOARD:
{
this.OnClipBoardChangeIO.Invoke(this, new ClipBoardConEventArgs(ClipBoardOPType.Get, this[false]));
ClipBoardConHelpers.SendMessage(hWndNextWindow, m.Msg, m.WParam, m.LParam);
break;
}
case ClipBoardHandleOptions.WM_DESTROY:
{
ClipBoardConHelpers.ChangeClipboardChain(this.Handle, hWndNextWindow);
break;
}
}
base.WndProc(ref m);
}
protected void CreateThreads()
{
#region Set
this.SetThread = new Thread(new ParameterizedThreadStart(x =>
{
int retryTimes = (int)Thread.GetData(Thread.GetNamedDataSlot("set_retryTimes"))
, retryDelay = (int)Thread.GetData(Thread.GetNamedDataSlot("set_retryDelay"));
bool copy = (bool)Thread.GetData(Thread.GetNamedDataSlot("set_copy"));
Contract.Requires <ArgumentNullException>(x != null);
Contract.Requires <ArgumentOutOfRangeException>(retryTimes > -1);
Contract.Requires <ArgumentOutOfRangeException>(retryDelay > -1);
DataObject dataObject = null;
if (!(x is IComDataObject))
{
dataObject = new DataObject(x);
}
if (this.restrictFormats)
{
if (dataObject == null)
{
dataObject = x as DataObject;
}
Contract.Requires <SecurityException>(IsFormatValid(dataObject));
}
int hr, retry = retryTimes;
this.UnmanagedCode.Assert();
try
{
do
{
if (x is IComDataObject)
{
hr = ClipBoardConHelpers.OleSetClipboard((IComDataObject)x);
}
else
{
hr = ClipBoardConHelpers.OleSetClipboard(dataObject);
}
if (hr != 0)
{
Contract.Requires <ExternalException>(retry > 0);
retry--;
System.Threading.Thread.Sleep(retryDelay /*ms*/);
}
}while (hr != 0);
if (copy)
{
retry = retryTimes;
do
{
hr = ClipBoardConHelpers.OleFlushClipboard();
if (hr != 0)
{
Contract.Requires <ExternalException>(retry > 0);
retry--;
System.Threading.Thread.Sleep(retryDelay);
}
}while (hr != 0);
}
}
finally
{
CodeAccessPermission.RevertAssert();
}
}))
{
IsBackground = true
};
this.SetThread.SetApartmentState(ApartmentState.STA);
#endregion
#region Get
this.GetThread = new Thread(new ParameterizedThreadStart(x =>
{
int retryTimes = (int)x
, retryDelay = (int)Thread.GetData(Thread.GetNamedDataSlot("get_retryDelay"));
IComDataObject dataObject = null;
int hr, retry = retryTimes;
do
{
hr = ClipBoardConHelpers.OleGetClipboard(ref dataObject);
if (hr != 0)
{
Contract.Requires <ExternalException>(retry != 0);
retry--;
System.Threading.Thread.Sleep(retryDelay /*ms*/);
}
}while (hr != 0);
if (dataObject != null)
{
if ((dataObject is System.Runtime.InteropServices.ComTypes.IDataObject) && !Marshal.IsComObject(dataObject))
{
Thread.SetData(Thread.GetNamedDataSlot("get_Result"), (System.Runtime.InteropServices.ComTypes.IDataObject)dataObject);
}
else
{
Thread.SetData(Thread.GetNamedDataSlot("get_Result"), new DataObject(dataObject));
}
}
else
{
Thread.SetData(Thread.GetNamedDataSlot("get_Result"), null);
}
}))
{
IsBackground = true
};
this.GetThread.SetApartmentState(ApartmentState.STA);
#endregion
}