protected override bool GetHitTest(Point point)
{
if (base.GetHitTest(point))
{
return(true);
}
// Check if the user has clicked on the scroll bars and forward the message to
// the ScrollableControl. (Don't filter out the scrolling.). Keep in mind that scrollbars
// will be shown only if ScrollableControl.AutoScroll = true
//
if (this.Control is ScrollableControl && ((ScrollableControl)Control).AutoScroll)
{
int hitTestResult = (int)Native.SendMessage(this.Control.Handle,
Native.Msg.WM_NCHITTEST,
IntPtr.Zero,
(IntPtr)Native.LParam(point.X, point.Y));
if (hitTestResult == HTHSCROLL || hitTestResult == HTVSCROLL)
{
return(true);
}
}
return(false);
}
// Keep in mind that messages are recieved for the child controls if routed
//
protected virtual void WndProc(ref Message m)
{
// Filter out kb input
//
if ((Native.Msg)m.Msg >= Native.Msg.WM_KEYFIRST && (Native.Msg)m.Msg <= Native.Msg.WM_KEYLAST)
{
return;
}
// Mouse messages should be routed the control, if GetHitTest (virtual) returns true.
//
if (IsMouseMessage((Native.Msg)m.Msg) &&
this.GetHitTest(new Point(Native.LoWord((int)m.LParam), Native.HiWord(((int)m.LParam)))))
{
this.DefWndProc(ref m);
return;
}
switch ((Native.Msg)m.Msg)
{
case Native.Msg.WM_CREATE:
this.DefWndProc(ref m);
if (m.HWnd == this.Control.Handle)
{
OnCreateHandle();
}
break;
case Native.Msg.WM_CONTEXTMENU:
OnContextMenu(Native.LoWord((int)m.LParam), Native.HiWord((int)m.LParam));
break;
case Native.Msg.WM_SETCURSOR:
if (this.GetHitTest(new Point(Native.LoWord((int)m.LParam), Native.HiWord((int)m.LParam))))
{
this.DefWndProc(ref m);
}
else
{
OnSetCursor();
}
break;
case Native.Msg.WM_SETFOCUS:
this.DefWndProc(ref m);
break;
case Native.Msg.WM_PAINT:
// Wait for control's WM_PAINT to complete first.
//
this.DefWndProc(ref m);
Graphics gfx = Graphics.FromHwnd(m.HWnd);
PaintEventArgs args = new PaintEventArgs(gfx, this.Control.Bounds);
OnPaintAdornments(args);
gfx.Dispose();
args.Dispose();
break;
case Native.Msg.WM_NCRBUTTONDOWN:
case Native.Msg.WM_NCLBUTTONDOWN:
case Native.Msg.WM_NCMBUTTONDOWN:
case Native.Msg.WM_NCLBUTTONDBLCLK:
case Native.Msg.WM_NCRBUTTONDBLCLK:
break;
case Native.Msg.WM_LBUTTONDBLCLK:
case Native.Msg.WM_RBUTTONDBLCLK:
case Native.Msg.WM_MBUTTONDBLCLK:
if ((Native.Msg)m.Msg == Native.Msg.WM_LBUTTONDBLCLK)
{
_mouseButtonDown = MouseButtons.Left;
}
else if ((Native.Msg)m.Msg == Native.Msg.WM_RBUTTONDBLCLK)
{
_mouseButtonDown = MouseButtons.Right;
}
else if ((Native.Msg)m.Msg == Native.Msg.WM_MBUTTONDBLCLK)
{
_mouseButtonDown = MouseButtons.Middle;
}
OnMouseDoubleClick();
this.BaseWndProc(ref m);
break;
case Native.Msg.WM_MOUSEHOVER:
OnMouseHover();
break;
case Native.Msg.WM_LBUTTONDOWN:
case Native.Msg.WM_RBUTTONDOWN:
case Native.Msg.WM_MBUTTONDOWN:
_mouseMoveAfterMouseDown = true;
if ((Native.Msg)m.Msg == Native.Msg.WM_LBUTTONDOWN)
{
_mouseButtonDown = MouseButtons.Left;
}
else if ((Native.Msg)m.Msg == Native.Msg.WM_RBUTTONDOWN)
{
_mouseButtonDown = MouseButtons.Right;
}
else if ((Native.Msg)m.Msg == Native.Msg.WM_MBUTTONDOWN)
{
_mouseButtonDown = MouseButtons.Middle;
}
if (_firstMouseMoveInClient)
{
OnMouseEnter();
_firstMouseMoveInClient = false;
}
this.OnMouseDown(Native.LoWord((int)m.LParam), Native.HiWord((int)m.LParam));
this.BaseWndProc(ref m);
break;
case Native.Msg.WM_MOUSELEAVE:
_firstMouseMoveInClient = false;
OnMouseLeave();
this.BaseWndProc(ref m);
break;
// The WM_CANCELMODE message is sent to cancel certain modes, such as mouse capture.
// For example, the system sends this message to the active window when a dialog box
// or message box is displayed. Certain functions also send this message explicitly to
// the specified window regardless of whether it is the active window. For example,
// the EnableWindow function sends this message when disabling the specified window.
//
case Native.Msg.WM_CANCELMODE:
OnMouseDragEnd(true);
this.DefWndProc(ref m);
break;
case Native.Msg.WM_LBUTTONUP:
case Native.Msg.WM_RBUTTONUP:
case Native.Msg.WM_NCLBUTTONUP:
case Native.Msg.WM_NCRBUTTONUP:
case Native.Msg.WM_MBUTTONUP:
case Native.Msg.WM_NCMBUTTONUP:
_mouseMoveAfterMouseDown = false; // just in case
this.OnMouseUp();
this.BaseWndProc(ref m);
break;
// // MWF Specific msg! - must reach control
// //
// case Native.Msg.WM_MOUSE_ENTER:
// _firstMouseMoveInClient = false; // just so that nothing will get fired in WM_MOUSEMOVE
// OnMouseEnter ();
// this.DefWndProc (ref m);
// break;
// FIXME: The first MOUSEMOVE after WM_MOUSEDOWN should be ingored
//
case Native.Msg.WM_MOUSEMOVE:
if (_mouseMoveAfterMouseDown) // mousemove is send after each mousedown so ignore that
{
_mouseMoveAfterMouseDown = false;
this.BaseWndProc(ref m);
return;
}
// If selection is in progress pass the mouse move msg to the primary selection.
// If resizing is in progress pass to the parent of the primary selection (remmember that the selection
// frame is not a control and is drawn in the parent of the primary selection).
//
// Required in order for those 2 operations to continue when the mouse is moving over a control covering
// the one where the action takes place.
//
IUISelectionService uiSelectionServ = this.GetService(typeof(IUISelectionService)) as IUISelectionService;
ISelectionService selectionServ = this.GetService(typeof(ISelectionService)) as ISelectionService;
IDesignerHost host = this.GetService(typeof(IDesignerHost)) as IDesignerHost;
if (uiSelectionServ != null && selectionServ != null && host != null)
{
Control primarySelection = selectionServ.PrimarySelection as Control;
Point location = new Point(Native.LoWord((int)m.LParam), Native.HiWord((int)m.LParam));
if (uiSelectionServ.SelectionInProgress &&
this.Component != host.RootComponent &&
this.Component != selectionServ.PrimarySelection)
{
location = primarySelection.PointToClient(this.Control.PointToScreen(location));
Native.SendMessage(primarySelection.Handle, (Native.Msg)m.Msg, m.WParam, Native.LParam(location.X, location.Y));
}
else if (uiSelectionServ.ResizeInProgress &&
// this.Component != host.RootComponent &&
this.Control.Parent == ((Control)selectionServ.PrimarySelection).Parent)
{
location = this.Control.Parent.PointToClient(this.Control.PointToScreen(location));
Native.SendMessage(this.Control.Parent.Handle, (Native.Msg)m.Msg, m.WParam, Native.LParam(location.X, location.Y));
}
else
{
this.OnMouseMove(location.X, location.Y);
}
}
else
{
this.OnMouseMove(Native.LoWord((int)m.LParam), Native.HiWord((int)m.LParam));
}
this.BaseWndProc(ref m);
break;
default:
// Pass everything else to the control and return
//
this.DefWndProc(ref m);
break;
}
}