Calculates the binding rectangle for the given text string when a specified font is used


- textString (String)
- Input string
- font ( MCvFont %)
- The font structure
- textSize ( MCvSize %)
- Resultant size of the text string. Height of the text does not include the height of character parts that are below the baseline
- baseline ( Int32 %)
- y-coordinate of the baseline relatively to the bottom-most text point