XTextWidth(), XTextWidth16() - compute text width
int XTextWidth (XFontStruct *font_struct, char *string, int count)
int XTextWidth16 (XFontStruct *font_struct, XChar2b *string,
int count)
The XTextWidth(3) and XTextWidth16(3) functions return the width of the specified 8-bit or 2-byte character strings.
Xlib
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at webmaster@systemmanager.forsenergy.ru to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.