Неклиентные сообщения
| WM_NCACTIVATE | WM_NCMBUTTONDOWN |
| WM_NCCREATE | WM_NCMBUTTONUP |
| WM_NCCALCSIZE | WM_NCMOUSEMOVE |
| WM_NCDESTROY | WM_NCMMOUSEMOVE |
| WM_NCHITTEST | WM_NCPAINT |
| WM_NCLBUTTONDBLCLK | WM_NCRBUTTONDBLCLK |
| WM_NCLBUTTONDOWN | WM_NCRBUTTONDOWN |
| WM_NCMBUTTONDBLCLK | WM_NCRBUTTONUP |