private void OnPageDragStart(Crownwood.DotNetMagic.Controls.TabControl sender,
Crownwood.DotNetMagic.Controls.TabPage movePage,
MouseEventArgs e)
{
// Is the user allowed to redock?
if (DockingManager.AllowRedocking)
{
// Use allow to redock this particular content?
if (this.RedockAllowed)
{
// Event page must specify its Content object
Content c = movePage.Tag as Content;
// Remember the position of the tab before it is removed
_dragPageIndex = _tabControl.TabPages.IndexOf(movePage);
// Force the entire window to redraw to ensure the Redocker does not start drawing
// the XOR indicator before the window repaints itself. Otherwise the repainted
// control will interfere with the XOR indicator.
this.Refresh();
// Start redocking activity for the single Content of this WindowContent
_redocker = Redocker.CreateRedocker(DockingManager.FeedbackStyle, _tabControl,
c, this, new Point(e.X, e.Y));
}
}
}
/// <summary>
/// Processes Windows messages.
/// </summary>
/// <param name="m">The Windows Message to process. </param>
protected override void WndProc(ref Message m)
{
// Want to notice when the window is maximized
if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDBLCLK)
{
// Is the user allowed to redock?
if (_dockingManager.AllowRedocking)
{
// Redock and kill ourself
Restore();
// Raise event to indicate a double click occured
_dockingManager.OnDoubleClickDock();
}
// 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 behaviour of moving the window via the caption box
if (result == HITTEST_CAPTION)
{
// Is the user allowed to redock?
if (_dockingManager.AllowRedocking)
{
// 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();
// Raise event to indicate a floating form has become active
_dockingManager.OnFloatingFormActivated(this);
// 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);
// Begin a redocking activity
_redocker = Redocker.CreateRedocker(DockingManager.FeedbackStyle,
this, new Point(mousePos.x - DesktopBounds.X,
mousePos.y - DesktopBounds.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);
}
