Страницы справочника OS X

Эта страница руководства является частью версии 5.0 Инструментов XCode

Читать страницы руководства

Tk_GetJustifyFromObj(3)                     Tk Library Procedures                    Tk_GetJustifyFromObj(3)



____________________________________________________________________________________________________________

NAME
       Tk_GetJustifyFromObj,  Tk_GetJustify,  Tk_NameOfJustify - translate between strings and justification
       styles

SYNOPSIS
       #include <tk.h>

       int
       Tk_GetJustifyFromObj(interp, objPtr, justifyPtr)

       int
       Tk_GetJustify(interp, string, justifyPtr)

       const char *
       Tk_NameOfJustify(justify)

ARGUMENTS
       Tcl_Interp *interp (in)              Interpreter to use for error reporting, or NULL.

       Tcl_Obj *objPtr (in/out)             String value  contains  name  of  justification  style,  one  of
                                            "left", "right", or "center".  The internal rep will be modified
                                            to cache corresponding justify value.

       const char *string (in)              Same as objPtr except  description  of  justification  style  is
                                            passed as a string.

       int *justifyPtr (out)                Pointer  to location in which to store justify value correspond-ing corresponding
                                            ing to objPtr or string.

       Tk_Justify justify (in)              Justification style (one of the values listed below).
____________________________________________________________________________________________________________

DESCRIPTION
       Tk_GetJustifyFromObj places in *justifyPtr the justify value corresponding to objPtr's  value.   This
       value will be one of the following:

       TK_JUSTIFY_LEFT
              Means  that the text on each line should start at the left edge of the line;  as a result, the
              right edges of lines may be ragged.

       TK_JUSTIFY_RIGHT
              Means that the text on each line should end at the right edge of the line;  as a  result,  the
              left edges of lines may be ragged.

       TK_JUSTIFY_CENTER
              Means  that  the  text  on each line should be centered;  as a result, both the left and right
              edges of lines may be ragged.

       Under normal circumstances the return value is TCL_OK and interp is unused.  If objPtr does not  con-tain contain
       tain  a  valid  justification  style or an abbreviation of one of these names, TCL_ERROR is returned,
       *justifyPtr is unmodified, and an error message is stored in interp's result if interp is  not  NULL.
       Tk_GetJustifyFromObj  caches  information  about  the  return value in objPtr, which speeds up future
       calls to Tk_GetJustifyFromObj with the same objPtr.

       Tk_GetJustify is identical to Tk_GetJustifyFromObj except that the description of  the  justification
       is specified with a string instead of an object.  This prevents Tk_GetJustify from caching the return
       value, so Tk_GetJustify is less efficient than Tk_GetJustifyFromObj.

       Tk_NameOfJustify is the logical inverse of Tk_GetJustify.  Given a justify value it returns a  stati-cally-allocated statically-allocated
       cally-allocated  string  corresponding  to  justify.   If  justify is not a legal justify value, then
       "unknown justification style" is returned.


KEYWORDS
       center, fill, justification, string



Tk                                                   8.1                             Tk_GetJustifyFromObj(3)