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XTextWidth, XTextWidth16
- compute text width 
- int XTextWidth(XFontStruct *font_struct, char
*string, 
- int count);  
- int XTextWidth16(XFontStruct *font_struct, XChar2b
- *string, int count);  
- count
- Specifies the character count in the
specified string. 
- font_struct
- Specifies the font used for the width computation.
- string
- Specifies the character string. 
The XTextWidth   and XTextWidth16
  functions return the width of the specified 8-bit or 2-byte character strings.
XLoadFont(3X11)
, XTextExtents(3X11)
Xlib - C Language X Interface 
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