private FindControlResult FindControl(IntPtr hwnd, int x, int y)
{
var ctrl = Control.FromHandle(hwnd);
if (ctrl == null)
{
return(new FindControlResult(Rectangle.Empty, null));
}
var ctrlType = ctrl.GetType();
if (ctrlType == typeof(ToolStrip))
{
var res = this.FindControl((ToolStrip)ctrl, x, y);
return(res);
}
if (ctrlType == typeof(ToolStripDropDownMenu))
{
var res = this.FindControl((ToolStripDropDownMenu)ctrl, x, y);
return(res);
}
else
{
var inside = this.HandleControlInsideToolStripItem(ctrl);
if (inside != null)
{
return(inside);
}
var bounds = ctrl.Parent?.RectangleToScreen(ctrl.Bounds) ?? ctrl.Bounds;
var res = new FindControlResult(bounds, ctrl.Name ?? ctrlType.FullName);
return(res);
}
}
private FindControlResult FindControl(ToolStripDropDownMenu ddm, int x, int y)
{
var p = ddm.PointToClient(new Point(x, y));
var item = GetAllChildren(ddm).FirstOrDefault(c => c.Bounds.Contains(p));
if (item == null)
{
var res = new FindControlResult(new Rectangle(), null);
return(res);
}
else
{
var res = new FindControlResult(ddm.RectangleToScreen(item.Bounds), item.Name);
return(res);
}
}
private FindControlResult FindControl(ToolStrip ts, int x, int y)
{
var p = ts.PointToClient(new Point(x, y));
var item = GetAllChildren(ts).FirstOrDefault(c => c.Bounds.Contains(p));
if (item == null)
{
var res = new FindControlResult(ts.Parent.RectangleToScreen(ts.Bounds), ts.Name);
return(res);
}
else
{
var res = new FindControlResult(ts.RectangleToScreen(item.Bounds), item.Name);
return(res);
}
}
// control inside ToolStripItem
private FindControlResult HandleControlInsideToolStripItem(Control ctrl)
{
var ownerProperty = ctrl.GetType().GetProperty("Owner");
if (ownerProperty == null)
{
return(null);
}
if (!typeof(ToolStripItem).IsAssignableFrom(ownerProperty.PropertyType))
{
return(null);
}
var owner = (ToolStripItem)ownerProperty.GetValue(ctrl);
var result = new FindControlResult(owner.Owner.RectangleToScreen(owner.Bounds), owner.Name);
return(result);
}
private static void Send(IntPtr receiver, IntPtr controlHandle, FindControlResult fcr)
{
var data = new SendData {
ControlHandle = controlHandle, ControlName = fcr.Name, Rectangle = fcr.Rectangle
};
var dataPtr = IntPtrAlloc(data);
var copyData = new COPYDATASTRUCT
{
dwData = new IntPtr(MessageIdentifier),
cbData = Marshal.SizeOf(data),
lpData = dataPtr
};
var ptrCopyData = IntPtrAlloc(copyData);
SendMessage(receiver, WM_COPYDATA, IntPtr.Zero, ptrCopyData);
Marshal.FreeHGlobal(dataPtr);
Marshal.FreeHGlobal(ptrCopyData);
}
