public void ShowPopupMenu(Point windowRelativePosition, Control owner, PopupMenuFlags flags, Rect excludeRect)
{
Point screenPosition = windowRelativePosition;
bool success = NativeMethods.ClientToScreen(owner.Handle, ref screenPosition);
if (!success)
{
throw new System.ComponentModel.Win32Exception();
}
TPMPARAMS paramStruct = new TPMPARAMS();
paramStruct.cbStruct = Convert.ToUInt32(Marshal.SizeOf <TPMPARAMS>());
paramStruct.rcExclude = excludeRect;
using (StructureBuffer <TPMPARAMS> ptr = new StructureBuffer <TPMPARAMS>())
{
ptr.Value = paramStruct;
NativeMethods.TrackPopupMenuEx(Handle, (uint)flags, screenPosition.x, screenPosition.y, owner.Handle, ptr.Handle);
}
}
public static extern uint TrackPopupMenuEx(IntPtr hmenu, uint fuFlags, int x, int y, IntPtr hwnd, [In] ref TPMPARAMS lptpm);
