protected override void OnMouseUp(MouseEventArgs e)
{
// The double click event will cause the control to be destroyed as
// the Contents are restored to their alternative positions, so need to
// double check the control is not already dead
if (!IsDisposed)
{
// Are we currently in a redocking state?
if (_redocker != null)
{
// Let the redocker finish off
_redocker.OnMouseUp(e);
// No longer need the object
_redocker = null;
}
// Right mouse button can generate a Context event
if (e.Button == MouseButtons.Right)
{
// Get screen coordinates of the mouse
Point pt = this.PointToScreen(new Point(e.X, e.Y));
// Box to transfer as parameter
OnContext(pt);
}
}
base.OnMouseUp(e);
}
protected void OnPageDragEnd(object sender, MouseEventArgs e)
{
// Are we currently in a redocking state?
if (_redocker != null)
{
// Let the redocker finish off
bool moved = _redocker.OnMouseUp(e);
// If the tab was not positioned somewhere else
if (!moved)
{
// Put back the page that was removed when dragging started
RestoreDraggingPage();
}
// No longer need the object
_redocker = null;
}
}
protected override void WndProc(ref Message m)
{
// Want to notice when the window is maximized
if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDBLCLK)
{
// Redock and kill ourself
Restore();
// We do not want to let the base process the message as the
// restore might fail due to lack of permission to restore to
// old state. In that case we do not want to maximize the window
return;
}
else if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDOWN)
{
if (!_intercept)
{
// Perform a hit test against our own window to determine
// which area the mouse press is over at the moment.
uint result = User32.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
// Only want to override the behviour of moving the window via the caption box
if (result == HITTEST_CAPTION)
{
// Remember new state
_intercept = true;
// Capture the mouse until the mouse us is received
this.Capture = true;
// Ensure that we gain focus and look active
this.Activate();
// Get mouse position to inscreen coordinates
Win32.POINT mousePos;
mousePos.x = (short)((uint)m.LParam & 0x0000FFFFU);
mousePos.y = (short)(uint)(((uint)m.LParam & 0xFFFF0000U) >> 16);
// Find adjustment to bring screen to client coordinates
Point topLeft = PointToScreen(new Point(0, 0));
topLeft.Y -= SystemInformation.CaptionHeight;
topLeft.X -= SystemInformation.BorderSize.Width;
// Begin a redocking activity
_redocker = new RedockerContent(this, new Point(mousePos.x - topLeft.X,
mousePos.y - topLeft.Y));
return;
}
}
}
else if (m.Msg == (int)Win32.Msgs.WM_MOUSEMOVE)
{
if (_intercept)
{
Win32.POINT mousePos;
mousePos.x = (short)((uint)m.LParam & 0x0000FFFFU);
mousePos.y = (short)(uint)(((uint)m.LParam & 0xFFFF0000U) >> 16);
_redocker.OnMouseMove(new MouseEventArgs(MouseButtons.Left,
0, mousePos.x, mousePos.y, 0));
return;
}
}
else if ((m.Msg == (int)Win32.Msgs.WM_RBUTTONDOWN) ||
(m.Msg == (int)Win32.Msgs.WM_MBUTTONDOWN))
{
if (_intercept)
{
Win32.POINT mousePos;
mousePos.x = (short)((uint)m.LParam & 0x0000FFFFU);
mousePos.y = (short)(uint)(((uint)m.LParam & 0xFFFF0000U) >> 16);
_redocker.QuitTrackingMode(new MouseEventArgs(MouseButtons.Left,
0, mousePos.x, mousePos.y, 0));
// Release capture
this.Capture = false;
// Reset state
_intercept = false;
return;
}
}
else if (m.Msg == (int)Win32.Msgs.WM_LBUTTONUP)
{
if (_intercept)
{
Win32.POINT mousePos;
mousePos.x = (short)((uint)m.LParam & 0x0000FFFFU);
mousePos.y = (short)(uint)(((uint)m.LParam & 0xFFFF0000U) >> 16);
_redocker.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 0,
mousePos.x, mousePos.y, 0));
// Release capture
this.Capture = false;
// Reset state
_intercept = false;
return;
}
}
else if ((m.Msg == (int)Win32.Msgs.WM_NCRBUTTONUP) ||
(m.Msg == (int)Win32.Msgs.WM_NCMBUTTONDOWN) ||
(m.Msg == (int)Win32.Msgs.WM_NCMBUTTONUP) ||
(m.Msg == (int)Win32.Msgs.WM_RBUTTONDOWN) ||
(m.Msg == (int)Win32.Msgs.WM_RBUTTONUP) ||
(m.Msg == (int)Win32.Msgs.WM_MBUTTONDOWN) ||
(m.Msg == (int)Win32.Msgs.WM_MBUTTONUP))
{
// Prevent middle and right mouse buttons from interrupting
// the correct operation of left mouse dragging
return;
}
else if (m.Msg == (int)Win32.Msgs.WM_NCRBUTTONDOWN)
{
if (!_intercept)
{
// Get screen coordinates of the mouse
Win32.POINT mousePos;
mousePos.x = (short)((uint)m.LParam & 0x0000FFFFU);
mousePos.y = (short)(uint)(((uint)m.LParam & 0xFFFF0000U) >> 16);
// Box to transfer as parameter
OnContext(new Point(mousePos.x, mousePos.y));
return;
}
}
base.WndProc(ref m);
}
