This message is posted to a window when the cursor is moved.
parameter1
Mouse key flags - see enumeration mouse_key_flag.
parameter2
| low-order part | The x-coordinate of the cursor. |
| second part | The y-coordinate of the cursor. |
result
The return value is unused.
If the mouse is captured, the message is posted to the window that has captured the mouse; otherwise, the message is posted to the window under the cursor.
The specified cursor position is relative to the origin of the client window.