Windows CE is an event-driven OS. Each message is passed in the message MSG structure. The Windows CE MSG structure contains six members. Message hooks are not supported. The following table shows supported members.
Member |
Description |
| hwnd | Handle to the window whose window procedure receives the message. |
| message | Specifies the message number. |
| wParam | Specifies additional message data. The exact meaning depends on the value of the message member. |
| lParam | Specifies additional message data. The exact meaning depends on the value of the message member. |
| time | Specifies the time that the message was posted. |
| pt | Specifies the coordinates of the last position touched on the screen, when the message was posted. |