Сообщения от "мыши"
| WM_HSCROLL | WM_MOUSEACTIVATE |
| WM_LBUTTONDCLICK | WM_MOUSEMOVE |
| WM_LBUTTONDOWN | WM_RBUTTONDBLCLK |
| WM_LBUTTONUP | WM_RBUTTONDOWN |
| WM_MBUTTONDCLICK | WM_RBUTTONUP |
| WM_MBUTTONDOWN | WM_SETCURSOR |
| WM_MBUTTONUP | WM_VSCROLL |
| WM_BUTTONUP | WM_MOUSEFIRST |
| WM_MOUSELAST |