protected override void WndProc(ref Message m)
{
// Defined in winuser.h
const int WM_DRAWCLIPBOARD = 0x308;
const int WM_CHANGECBCHAIN = 0x030D;
switch (m.Msg)
{
case WM_DRAWCLIPBOARD:
// The clipboard contents have been changed.
if (this.ClipboardChanged != null)
{
this.ClipboardChanged(this, new EventArgs());
}
ClipboardControl.SendMessage(this.m_NextClipboardViewer, m.Msg, m.WParam, m.LParam);
break;
case WM_CHANGECBCHAIN:
// Another clipboard viewer has been registered in
// the chain.
if (m.WParam == this.m_NextClipboardViewer)
{
this.m_NextClipboardViewer = m.LParam;
}
else
{
ClipboardControl.SendMessage(this.m_NextClipboardViewer, m.Msg, m.WParam, m.LParam);
}
break;
default:
base.WndProc(ref m);
break;
}
}
public WindowsClipboard()
{
WindowsClipboard.m_Control = new ClipboardControl();
if (Central.Manager.IDE == null || (Central.Manager.IDE as WindowsIDE).Visible == false)
Central.Manager.IDEOpened += new EventHandler((_a, _b) => { this.Register(); });
else
this.Register();
}
protected override void Dispose(bool disposing)
{
Action a = () => { ClipboardControl.ChangeClipboardChain(this.Handle, this.m_NextClipboardViewer); };
if (this.InvokeRequired)
{
this.Invoke(a);
}
else
{
a();
}
}
/// <summary>
/// Creates a new clipboard control; this must be added to a form
/// in order to receive clipboard events.
/// </summary>
public ClipboardControl()
{
this.m_NextClipboardViewer = ClipboardControl.SetClipboardViewer(this.Handle);
}
private void Register()
{
WindowsClipboard.m_Control = new ClipboardControl();
WindowsClipboard.m_Control.ClipboardChanged += new EventHandler((sender, e) =>
{
if (this.ContentsChanged != null)
this.ContentsChanged(null, new EventArgs());
});
(Central.Manager.IDE as WindowsIDE).Controls.Add(WindowsClipboard.m_Control);
}