class TGTextLayout: public TObject

 destructor

 Use the information in the TGTextLayout object to display a multi-line,
 justified string of text.

 This procedure is useful for simple widgets that need to display
 single-font, multi-line text and want TGFont to handle the details.

 dst       -- Window or pixmap in which to draw.
 gc        -- Graphics context to use for drawing text.
 x, y      -- Upper-left hand corner of rectangle in which to draw
              (pixels).
 firstChar -- The index of the first character to draw from the given
              text item. 0 specfies the beginning.
 lastChar  -- The index just after the last character to draw from the
              given text item. A number < 0 means to draw all characters.

 Use the information in the TGTextLayout object to display an underline
 below an individual character. This procedure does not draw the text,
 just the underline.

 This procedure is useful for simple widgets that need to display
 single-font, multi-line text with an individual character underlined
 and want TGFont to handle the details. To display larger amounts of
 underlined text, construct and use an underlined font.

 dst       -- Window or pixmap in which to draw.
 gc        -- Graphics context to use for drawing text.
 x, y      -- Upper-left hand corner of rectangle in which to draw
              (pixels).
 underline -- Index of the single character to underline, or -1 for
              no underline.

 Use the information in the TGTextLayout token to determine the character
 closest to the given point. The point must be specified with respect to
 the upper-left hand corner of the text layout, which is considered to be
 located at (0, 0).

 Any point whose y-value is less that 0 will be considered closest to the
 first character in the text layout; any point whose y-value is greater
 than the height of the text layout will be considered closest to the last
 character in the text layout.

 Any point whose x-value is less than 0 will be considered closest to the
 first character on that line; any point whose x-value is greater than the
 width of the text layout will be considered closest to the last character
 on that line.

 The return value is the index of the character that was closest to the
 point. Given a text layout with no characters, the value 0 will always
 be returned, referring to a hypothetical zero-width placeholder character.

 Use the information in the TGTextLayout token to return the bounding box
 for the character specified by index.

 The width of the bounding box is the advance width of the character, and
 does not include and left- or right-bearing. Any character that extends
 partially outside of the text layout is considered to be truncated at the
 edge. Any character which is located completely outside of the text
 layout is considered to be zero-width and pegged against the edge.

 The height of the bounding box is the line height for this font,
 extending from the top of the ascent to the bottom of the descent.
 Information about the actual height of the individual letter is not
 available.

 A text layout that contains no characters is considered to contain a
 single zero-width placeholder character.

 The return value is 0 if the index did not specify a character in the
 text layout, or non-zero otherwise. In that case, *bbox is filled with
 the bounding box of the character.

 layout -- Layout information, from a previous call to ComputeTextLayout().
 index  -- The index of the character whose bbox is desired.
 x, y   -- Filled with the upper-left hand corner, in pixels, of the
           bounding box for the character specified by index, if non-NULL.
 w, h   -- Filled with the width and height of the bounding box for the
           character specified by index, if non-NULL.

 Computes the distance in pixels from the given point to the given
 text layout. Non-displaying space characters that occur at the end of
 individual lines in the text layout are ignored for hit detection
 purposes.

 The return value is 0 if the point (x, y) is inside the text layout.
 If the point isn't inside the text layout then the return value is the
 distance in pixels from the point to the text item.

 x, y -- Coordinates of point to check, with respect to the upper-left
         corner of the text layout (in pixels).

 Determines whether a text layout lies entirely inside, entirely outside,
 or overlaps a given rectangle. Non-displaying space characters that occur
 at the end of individual lines in the text layout are ignored for
 intersection calculations.

 The return value is -1 if the text layout is entirely outside of the
 rectangle, 0 if it overlaps, and 1 if it is entirely inside of the
 rectangle.

 x, y -- Upper-left hand corner, in pixels, of rectangular area to compare
         with text layout. Coordinates are with respect to the upper-left
         hand corner of the text layout itself.
 w, h -- The width and height of the above rectangular area, in pixels.

 Outputs the contents of a text layout in Postscript format. The set of
 lines in the text layout will be rendered by the user supplied Postscript
 function. The function should be of the form:

     justify x y string  function  --

 Justify is -1, 0, or 1, depending on whether the following string should
 be left, center, or right justified, x and y is the location for the
 origin of the string, string is the sequence of characters to be printed,
 and function is the name of the caller-provided function; the function
 should leave nothing on the stack.

 The meaning of the origin of the string (x and y) depends on the
 justification. For left justification, x is where the left edge of the
 string should appear. For center justification, x is where the center of
 the string should appear. And for right justification, x is where the
 right edge of the string should appear. This behavior is necessary
 because, for example, right justified text on the screen is justified
 with screen metrics. The same string needs to be justified with printer
 metrics on the printer to appear in the correct place with respect to
 other similarly justified strings. In all circumstances, y is the
 location of the baseline for the string.

 result is modified to hold the Postscript code that will render the text
 layout.