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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) |
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 (left, right, or |
center). The internal |
rep will be modified to |
cache corresponding |
justify value. |
char *string (in) ||
Same as objPtr except |
description of justifi- |
cation style is passed |
as a string.
int *justifyPtr (out) Pointer to location in
which to store justify
value corresponding to
objPtr or string.
Tk_Justify justify (in) Justification style
(one of the values
listed below).
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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 doesn't contain a valid justif- |
ication 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 isn't |
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 statically-allocated
string corresponding to justify. If justify isn't a legal
justify value, then ``unknown justification style'' is
returned.
KEYWORDS
center, fill, justification, string
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Created 1996-2025 by Maxim Chirkov Добавить, Поддержать, Вебмастеру |