Method that returns the extents of the client view within its assigned hWnd.
| Name | Type | Description |
| Top | Long | Output Long that specifies the top of the client view. |
| Left | Long | Output Long that specifies the left position of the client view. |
| Width | Long | Output Long that specifies the width of the client view. |
| Height | Long | Output Long that specifies the height of the client view. |