TextWidth

Query width of unformatted text, in pixels

#include <Quickdraw.h> Quickdraw

short TextWidth(textPtr, startOffset, count );

Ptr textPtr ; address of a buffer containing text to measure

short startOffset ; offset of character to start measuring

short count ; number of characters to measure

returns width, in pixels, text would occupy

TextWidth returns the width, in pixels, a series of characters would occupy

if they were drawn immediately. It takes into consideration the current font,

size, and style.

textPtr is the address of a buffer containing unformatted text to measure.

startOffset is the offset from textPtr of the first character you wish measured.

To measure a C string, just use 0.

count is the number of characters to measure (starting at

textPtr+startOffset ). For C strings, just use strlen(textPtr ).

Returns: the width of the specified text, in pixels.

Notes: TextWidth functions as a series of calls to CharWidth, returning the

sum of the widths obtained by that call.

Use StringWidth to measure Pascal-style length-prefixed strings. Use

MeasureText to obtain an array, with each element containing the width

of the text from the start to the right edge of the corresponding character.

See SpaceExtra for a way to right-justify a line of text.

Referenced by (29):