Tk_GetJustifyFromObj(3TK) Tk Library Procedures Tk_GetJustifyFromObj(3TK)
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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) |
CONST char * |
Tk_NameOfJustify(justify) |
ARGUMENTS
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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. |
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 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 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 isn't NULL. Tk_GetJustifyFromObj caches information about the return value in objPtr, which speeds up future calls to Tk_GetJusti- |
fyFromObj 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
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTk |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tk is available on http://opensolaris.org.
Tk 8.1 Tk_GetJustifyFromObj(3TK)