'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
-'\" RCS: @(#) $Id: GetCursor.3,v 1.5 2002/08/05 04:30:38 dgp Exp $
-'\"
-'\" The definitions below are for supplemental macros used in Tcl/Tk
-'\" manual entries.
-'\"
-'\" .AP type name in/out ?indent?
-'\" Start paragraph describing an argument to a library procedure.
-'\" type is type of argument (int, etc.), in/out is either "in", "out",
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-'\" .BE
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-'\" .CS
-'\" Begin code excerpt.
-'\"
-'\" .CE
-'\" End code excerpt.
-'\"
-'\" .VS ?version? ?br?
-'\" Begin vertical sidebar, for use in marking newly-changed parts
-'\" of man pages. The first argument is ignored and used for recording
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-'\" is present, then a line break is forced before starting the sidebar.
-'\"
-'\" .VE
-'\" End of vertical sidebar.
-'\"
-'\" .DS
-'\" Begin an indented unfilled display.
-'\"
-'\" .DE
-'\" End of indented unfilled display.
-'\"
-'\" .SO
-'\" Start of list of standard options for a Tk widget. The
-'\" options follow on successive lines, in four columns separated
-'\" by tabs.
-'\"
-'\" .SE
-'\" End of list of standard options for a Tk widget.
-'\"
-'\" .OP cmdName dbName dbClass
-'\" Start of description of a specific option. cmdName gives the
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-'\"
-'\" .UL arg1 arg2
-'\" Print arg1 underlined, then print arg2 normally.
-'\"
-'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
-'\"
-'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
+.TH Tk_AllocCursorFromObj 3 8.1 Tk "Tk Library Procedures"
+.\" The -*- nroff -*- definitions below are for supplemental macros used
+.\" in Tcl/Tk manual entries.
+.\"
+.\" .AP type name in/out ?indent?
+.\" Start paragraph describing an argument to a library procedure.
+.\" type is type of argument (int, etc.), in/out is either "in", "out",
+.\" or "in/out" to describe whether procedure reads or modifies arg,
+.\" and indent is equivalent to second arg of .IP (shouldn't ever be
+.\" needed; use .AS below instead)
+.\"
+.\" .AS ?type? ?name?
+.\" Give maximum sizes of arguments for setting tab stops. Type and
+.\" name are examples of largest possible arguments that will be passed
+.\" to .AP later. If args are omitted, default tab stops are used.
+.\"
+.\" .BS
+.\" Start box enclosure. From here until next .BE, everything will be
+.\" enclosed in one large box.
+.\"
+.\" .BE
+.\" End of box enclosure.
+.\"
+.\" .CS
+.\" Begin code excerpt.
+.\"
+.\" .CE
+.\" End code excerpt.
+.\"
+.\" .VS ?version? ?br?
+.\" Begin vertical sidebar, for use in marking newly-changed parts
+.\" of man pages. The first argument is ignored and used for recording
+.\" the version when the .VS was added, so that the sidebars can be
+.\" found and removed when they reach a certain age. If another argument
+.\" is present, then a line break is forced before starting the sidebar.
+.\"
+.\" .VE
+.\" End of vertical sidebar.
+.\"
+.\" .DS
+.\" Begin an indented unfilled display.
+.\"
+.\" .DE
+.\" End of indented unfilled display.
+.\"
+.\" .SO ?manpage?
+.\" Start of list of standard options for a Tk widget. The manpage
+.\" argument defines where to look up the standard options; if
+.\" omitted, defaults to "options". The options follow on successive
+.\" lines, in three columns separated by tabs.
+.\"
+.\" .SE
+.\" End of list of standard options for a Tk widget.
+.\"
+.\" .OP cmdName dbName dbClass
+.\" Start of description of a specific option. cmdName gives the
+.\" option's name as specified in the class command, dbName gives
+.\" the option's name in the option database, and dbClass gives
+.\" the option's class in the option database.
+.\"
+.\" .UL arg1 arg2
+.\" Print arg1 underlined, then print arg2 normally.
+.\"
+.\" .QW arg1 ?arg2?
+.\" Print arg1 in quotes, then arg2 normally (for trailing punctuation).
+.\"
+.\" .PQ arg1 ?arg2?
+.\" Print an open parenthesis, arg1 in quotes, then arg2 normally
+.\" (for trailing punctuation) and then a closing parenthesis.
+.\"
+.\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
.if t .wh -1.3i ^B
.nr ^l \n(.l
.ad b
-'\" # Start an argument description
+.\" # Start an argument description
.de AP
.ie !"\\$4"" .TP \\$4
.el \{\
.\}
.ta \\n()Au \\n()Bu
.ie !"\\$3"" \{\
-\&\\$1 \\fI\\$2\\fP (\\$3)
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.\".b
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.el \{\
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.\}
..
-'\" # define tabbing values for .AP
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.nr )A 10n
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.nr )C \\n()Bu+\\w'(in/out)'u+2n
..
.AS Tcl_Interp Tcl_CreateInterp in/out
-'\" # BS - start boxed text
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.if n \l'\\n(.lu\(ul'
.if n .fi
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-'\" # BE - end boxed text (draw box now)
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.de BE
.nf
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.br
.nr ^b 0
..
-'\" # VS - start vertical sidebar
-'\" # ^Y = starting y location
-'\" # ^v = 1 (for troff; for nroff this doesn't matter)
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.de VS
.if !"\\$2"" .br
.mk ^Y
.ie n 'mc \s12\(br\s0
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..
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.de VE
.ie n 'mc
.el \{\
.\}
.nr ^v 0
..
-'\" # Special macro to handle page bottom: finish off current
-'\" # box/sidebar if in box/sidebar mode, then invoked standard
-'\" # page bottom macro.
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.ev 2
'ti 0
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..
-'\" # DS - begin display
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.de DS
.RS
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.sp
..
-'\" # DE - end display
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.de DE
.fi
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.sp
..
-'\" # SO - start of list of standard options
+.\" # SO - start of list of standard options
.de SO
+'ie '\\$1'' .ds So \\fBoptions\\fR
+'el .ds So \\fB\\$1\\fR
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 5.5c 11c
.ft B
..
-'\" # SE - end of list of standard options
+.\" # SE - end of list of standard options
.de SE
.fi
.ft R
.LP
-See the \\fBoptions\\fR manual entry for details on the standard options.
+See the \\*(So manual entry for details on the standard options.
..
-'\" # OP - start of full description for a single option
+.\" # OP - start of full description for a single option
.de OP
.LP
.nf
.fi
.IP
..
-'\" # CS - begin code excerpt
+.\" # CS - begin code excerpt
.de CS
.RS
.nf
.ta .25i .5i .75i 1i
..
-'\" # CE - end code excerpt
+.\" # CE - end code excerpt
.de CE
.fi
.RE
..
+.\" # UL - underline word
.de UL
\\$1\l'|0\(ul'\\$2
..
-.TH Tk_AllocCursorFromObj 3 8.1 Tk "Tk Library Procedures"
+.\" # QW - apply quotation marks to word
+.de QW
+.ie '\\*(lq'"' ``\\$1''\\$2
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\$2
+..
+.\" # PQ - apply parens and quotation marks to word
+.de PQ
+.ie '\\*(lq'"' (``\\$1''\\$2)\\$3
+.\"" fix emacs highlighting
+.el (\\*(lq\\$1\\*(rq\\$2)\\$3
+..
+.\" # QR - quoted range
+.de QR
+.ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
+..
+.\" # MT - "empty" string
+.de MT
+.QW ""
+..
.BS
.SH NAME
Tk_AllocCursorFromObj, Tk_GetCursor, Tk_GetCursorFromObj, Tk_GetCursorFromData, Tk_NameOfCursor, Tk_FreeCursorFromObj, Tk_FreeCursor \- maintain database of cursors
.nf
\fB#include <tk.h>\fR
.sp
-.VS 8.1
Tk_Cursor
\fBTk_AllocCursorFromObj(\fIinterp, tkwin, objPtr\fB)\fR
.sp
.sp
Tk_Cursor
\fBTk_GetCursorFromObj(\fItkwin, objPtr\fB)\fR
-.VE
.sp
Tk_Cursor
\fBTk_GetCursorFromData(\fIinterp, tkwin, source, mask, width, height, xHot, yHot, fg, bg\fB)\fR
.sp
-CONST char *
+const char *
\fBTk_NameOfCursor(\fIdisplay, cursor\fB)\fR
.sp
-.VS 8.1
\fBTk_FreeCursorFromObj(\fItkwin, objPtr\fB)\fR
-.VE
.sp
\fBTk_FreeCursor(\fIdisplay, cursor\fB)\fR
.SH ARGUMENTS
Interpreter to use for error reporting.
.AP Tk_Window tkwin in
Token for window in which the cursor will be used.
-.VS 8.1 br
.AP Tcl_Obj *objPtr in/out
Description of cursor; see below for possible values. Internal rep will be
modified to cache pointer to corresponding Tk_Cursor.
.AP char *name in
Same as \fIobjPtr\fR except description of cursor is passed as a string and
-resulting Tk_Cursor isn't cached.
-.VE
-.AP "CONST char" *source in
+resulting Tk_Cursor is not cached.
+.AP "const char" *source in
Data for cursor cursor, in standard cursor format.
-.AP "CONST char" *mask in
+.AP "const char" *mask in
Data for mask cursor, in standard cursor format.
.AP "int" width in
Width of \fIsource\fR and \fImask\fR.
have been returned by some previous call to \fBTk_GetCursor\fR or
\fBTk_GetCursorFromData\fR.
.BE
-
.SH DESCRIPTION
.PP
These procedures manage a collection of cursors
re-used efficiently, thereby avoiding server overhead, and also
allow cursors to be named with character strings.
.PP
-.VS 8.1
\fBTk_AllocCursorFromObj\fR takes as argument an object describing a
cursor, and returns an opaque Tk identifier for a cursor corresponding
to the description. It re-uses an existing cursor if possible and
\fBTk_GetCursorFromObj\fR. If an error occurs in creating the cursor,
such as when \fIobjPtr\fR refers to a non-existent file, then \fBNone\fR
is returned and an error message will be stored in \fIinterp\fR's result
-if \fIinterp\fR isn't NULL. \fIObjPtr\fR must contain a standard Tcl
+if \fIinterp\fR is not NULL. \fIObjPtr\fR must contain a standard Tcl
list with one of the following forms:
-.VE
.TP
\fIname\fR\0[\fIfgColor\fR\0[\fIbgColor\fR]]
\fIName\fR is the name of a cursor in the standard X cursor cursor,
i.e., any of the names defined in \fBcursorcursor.h\fR, without
the \fBXC_\fR. Some example values are \fBX_cursor\fR, \fBhand2\fR,
-or \fBleft_ptr\fR. Appendix B of ``The X Window System''
+or \fBleft_ptr\fR. Appendix B of
+.QW "The X Window System"
by Scheifler & Gettys has illustrations showing what each of these
cursors looks like. If \fIfgColor\fR and \fIbgColor\fR are both
specified, they give the foreground and background colors to use
including \fBibeam\fR, \fBcrosshair\fR, \fBwatch\fR, \fBplus\fR, and
\fBarrow\fR. In addition, Tk will load Macintosh cursor resources of
the types \fBcrsr\fR (color) and \fBCURS\fR (black and white) by the
-name of the of the resource. The application and all its open
+name of the resource. The application and all its open
dynamic library's resource files will be searched for the named
cursor. If there are conflicts color cursors will always be loaded
in preference to black and white cursors.
\fB@\fIsourceName\0maskName\0fgColor\0bgColor\fR
In this form, \fIsourceName\fR and \fImaskName\fR are the names of
files describing cursors for the cursor's source bits and mask.
-Each file must be in standard X11 or X10 cursor format.
+Each file must be in standard X11 cursor format.
\fIFgColor\fR and \fIbgColor\fR
indicate the colors to use for the
cursor, in any of the forms acceptable to \fBTk_GetColor\fR. This
cursor (\fB.ani\fR or \fB.cur\fR) from the file specified in
\fIsourceName\fR.
.PP
-.VS 8.1
\fBTk_GetCursor\fR is identical to \fBTk_AllocCursorFromObj\fR except
that the description of the cursor is specified with a string instead
of an object. This prevents \fBTk_GetCursor\fR from caching the
.PP
\fBTk_GetCursorFromObj\fR returns the token for an existing cursor, given
the window and description used to create the cursor.
-\fBTk_GetCursorFromObj\fR doesn't actually create the cursor; the cursor
+\fBTk_GetCursorFromObj\fR does not actually create the cursor; the cursor
must already have been created with a previous call to
\fBTk_AllocCursorFromObj\fR or \fBTk_GetCursor\fR. The return
value is cached in \fIobjPtr\fR, which speeds up
future calls to \fBTk_GetCursorFromObj\fR with the same \fIobjPtr\fR
and \fItkwin\fR.
-.VE
.PP
\fBTk_GetCursorFromData\fR allows cursors to be created from
in-memory descriptions of their source and mask cursors. \fISource\fR
#include "source.cursor"
#include "mask.cursor"
cursor = Tk_GetCursorFromData(interp, tkwin, source_bits,
- mask_bits, source_width, source_height, source_x_hot,
- source_y_hot, Tk_GetUid("red"), Tk_GetUid("blue"));
+ mask_bits, source_width, source_height, source_x_hot,
+ source_y_hot, Tk_GetUid("red"), Tk_GetUid("blue"));
.CE
.PP
Under normal conditions \fBTk_GetCursorFromData\fR
\fBTk_NameOfCursor\fR. Also, this call is not portable except for
cursors returned by \fBTk_GetCursor\fR.
.PP
-.VS 8.1
When a cursor returned by \fBTk_AllocCursorFromObj\fR, \fBTk_GetCursor\fR,
or \fBTk_GetCursorFromData\fR
is no longer needed, \fBTk_FreeCursorFromObj\fR or
There should be exactly one call to \fBTk_FreeCursor\fR for
each call to \fBTk_AllocCursorFromObj\fR, \fBTk_GetCursor\fR,
or \fBTk_GetCursorFromData\fR.
-.VE
-
.SH BUGS
+.PP
In determining whether an existing cursor can be used to satisfy
a new request, \fBTk_AllocCursorFromObj\fR, \fBTk_GetCursor\fR,
and \fBTk_GetCursorFromData\fR
that if the same \fIsource\fR pointer is used in two different calls,
then the pointers refer to the same data; it does not check to
see if the actual data values have changed.
-
.SH KEYWORDS
cursor
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