'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
-'\" RCS: @(#) $Id: GetBitmap.3,v 1.5 2002/08/08 01:43:10 hobbs 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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-'\"
-'\" .AS ?type? ?name?
-'\" Give maximum sizes of arguments for setting tab stops. Type and
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-'\" Start box enclosure. From here until next .BE, everything will be
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-'\" .BE
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-'\" .CS
-'\" Begin code excerpt.
-'\"
-'\" .CE
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-'\"
-'\" .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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-'\"
-'\" .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_AllocBitmapFromObj 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)
+\&\\$1 \\fI\\$2\\fP (\\$3)
.\".b
.\}
.el \{\
.\}
.\}
..
-'\" # define tabbing values for .AP
+.\" # define tabbing values for .AP
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.nr )A 10n
.if !"\\$1"" .nr )A \\w'\\$1'u+3n
.nr )C \\n()Bu+\\w'(in/out)'u+2n
..
.AS Tcl_Interp Tcl_CreateInterp in/out
-'\" # BS - start boxed text
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+.\" # ^b = 1
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.if n \l'\\n(.lu\(ul'
.if n .fi
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.de BE
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.ti 0
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.nr ^b 0
..
-'\" # VS - start vertical sidebar
-'\" # ^Y = starting y location
-'\" # ^v = 1 (for troff; for nroff this doesn't matter)
+.\" # VS - start vertical sidebar
+.\" # ^Y = starting y location
+.\" # ^v = 1 (for troff; for nroff this doesn't matter)
.de VS
.if !"\\$2"" .br
.mk ^Y
.ie n 'mc \s12\(br\s0
.el .nr ^v 1u
..
-'\" # VE - end of vertical sidebar
+.\" # VE - end of vertical sidebar
.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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.de ^B
.ev 2
'ti 0
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..
-'\" # DS - begin display
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.de DS
.RS
.nf
.sp
..
-'\" # DE - end display
+.\" # DE - end display
.de DE
.fi
.RE
.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_AllocBitmapFromObj 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_AllocBitmapFromObj, Tk_GetBitmap, Tk_GetBitmapFromObj, Tk_DefineBitmap, Tk_NameOfBitmap, Tk_SizeOfBitmap, Tk_FreeBitmapFromObj, Tk_FreeBitmap \- maintain database of single-plane pixmaps
.nf
\fB#include <tk.h>\fR
.sp
-.VS 8.1
Pixmap
-\fBTk_GetBitmapFromObj(\fIinterp, tkwin, objPtr\fB)\fR
+\fBTk_AllocBitmapFromObj(\fIinterp, tkwin, objPtr\fB)\fR
.sp
Pixmap
\fBTk_GetBitmap(\fIinterp, tkwin, info\fB)\fR
.sp
Pixmap
\fBTk_GetBitmapFromObj(\fItkwin, objPtr\fB)\fR
-.VE
.sp
int
\fBTk_DefineBitmap(\fIinterp, name, source, width, height\fB)\fR
.sp
-CONST char *
+const char *
\fBTk_NameOfBitmap(\fIdisplay, bitmap\fB)\fR
.sp
\fBTk_SizeOfBitmap(\fIdisplay, bitmap, widthPtr, heightPtr\fB)\fR
.sp
-.VS 8.1
\fBTk_FreeBitmapFromObj(\fItkwin, objPtr\fB)\fR
-.VE
.sp
\fBTk_FreeBitmap(\fIdisplay, bitmap\fB)\fR
.SH ARGUMENTS
is left after errors.
.AP Tk_Window tkwin in
Token for window in which the bitmap will be used.
-.VS 8.1 br
.AP Tcl_Obj *objPtr in/out
String value describes desired bitmap; internal rep will be
modified to cache pointer to corresponding Pixmap.
-.AP "CONST char" *info in
+.AP "const char" *info in
Same as \fIobjPtr\fR except description of bitmap is passed as a string and
-resulting Pixmap isn't cached.
-.VE
-.AP "CONST char" *name in
+resulting Pixmap is not cached.
+.AP "const char" *name in
Name for new bitmap to be defined.
-.AP "CONST char" *source in
+.AP "const void" *source in
Data for bitmap, in standard bitmap format.
Must be stored in static memory whose value will never change.
.AP "int" width in
Identifier for a bitmap allocated by \fBTk_AllocBitmapFromObj\fR or
\fBTk_GetBitmap\fR.
.BE
-
.SH DESCRIPTION
.PP
These procedures manage a collection of bitmaps (one-plane pixmaps)
re-used efficiently, thereby avoiding server overhead, and also
allow bitmaps to be named with character strings.
.PP
-.VS 8.1
\fBTk_AllocBitmapFromObj\fR returns a Pixmap identifier for a bitmap
that matches the description in \fIobjPtr\fR and is suitable for use
in \fItkwin\fR. It re-uses an existing bitmap, if possible, and
creates a new one otherwise. \fIObjPtr\fR's value must have one
of the following forms:
-.VE
.TP 20
\fB@\fIfileName\fR
\fIFileName\fR must be the name of a file containing a bitmap
-description in the standard X11 or X10 format.
+description in the standard X11 format.
.TP 20
\fIname\fR
\fIName\fR must be the name of a bitmap defined previously with
.RS
.TP 12
\fBerror\fR
-The international "don't" symbol: a circle with a diagonal line
-across it.
-.VS "" br
+The international
+.QW don't
+symbol: a circle with a diagonal line across it.
.TP 12
\fBgray75\fR
75% gray: a checkerboard pattern where three out of four bits are on.
-.VE
.TP 12
\fBgray50\fR
50% gray: a checkerboard pattern where every other bit is on.
-.VS "" br
.TP 12
\fBgray25\fR
25% gray: a checkerboard pattern where one out of every four bits is on.
-.VE
.TP 12
\fBgray12\fR
12.5% gray: a pattern where one-eighth of the bits are on, consisting of
An hourglass symbol.
.TP 12
\fBinfo\fR
-A large letter ``i''.
+A large letter
+.QW i .
.TP 12
\fBquesthead\fR
The silhouette of a human head, with a question mark in it.
A stop sign.
.TP 12
\fBnote\fR
-A face with ballon words.
+A face with balloon words.
.TP 12
\fBcaution\fR
A triangle with an exclamation point.
.RE
.LP
-.VS 8.1
Under normal conditions, \fBTk_AllocBitmapFromObj\fR
returns an identifier for the requested bitmap. If an error
occurs in creating the bitmap, such as when \fIobjPtr\fR refers
to a non-existent file, then \fBNone\fR is returned and an error
-message is left in \fIinterp\fR's result if \fIinterp\fR isn't
+message is left in \fIinterp\fR's result if \fIinterp\fR is not
NULL. \fBTk_AllocBitmapFromObj\fR caches information about the return
value in \fIobjPtr\fR, which speeds up future calls to procedures
such as \fBTk_AllocBitmapFromObj\fR and \fBTk_GetBitmapFromObj\fR.
.PP
\fBTk_GetBitmapFromObj\fR returns the token for an existing bitmap, given
the window and description used to create the bitmap.
-\fBTk_GetBitmapFromObj\fR doesn't actually create the bitmap; the bitmap
+\fBTk_GetBitmapFromObj\fR does not actually create the bitmap; the bitmap
must already have been created with a previous call to
\fBTk_AllocBitmapFromObj\fR or \fBTk_GetBitmap\fR. The return
value is cached in \fIobjPtr\fR, which speeds up
future calls to \fBTk_GetBitmapFromObj\fR with the same \fIobjPtr\fR
and \fItkwin\fR.
-.VE
.PP
\fBTk_DefineBitmap\fR associates a name with
in-memory bitmap data so that the name can be used in later
have been used in a call to \fBTk_DefineBitmap\fR.
The arguments \fIsource\fR, \fIwidth\fR, and \fIheight\fR
describe the bitmap.
-\fBTk_DefineBitmap\fR normally returns TCL_OK; if an error occurs
+\fBTk_DefineBitmap\fR normally returns \fBTCL_OK\fR; if an error occurs
(e.g. a bitmap named \fInameId\fR has already been defined) then
-TCL_ERROR is returned and an error message is left in
-\fIinterp->result\fR.
+\fBTCL_ERROR\fR is returned and an error message is left in
+interpreter \fIinterp\fR's result.
Note: \fBTk_DefineBitmap\fR expects the memory pointed to by
-\fIsource\fR to be static: \fBTk_DefineBitmap\fR doesn't make
+\fIsource\fR to be static: \fBTk_DefineBitmap\fR does not make
a private copy of this memory, but uses the bytes pointed to
by \fIsource\fR later in calls to \fBTk_AllocBitmapFromObj\fR or
\fBTk_GetBitmap\fR.
a stipple pattern.
The following code uses \fBTk_DefineBitmap\fR to define a
new bitmap named \fBfoo\fR:
-.VS
.CS
Pixmap bitmap;
#include "stip.bitmap"
Tk_DefineBitmap(interp, "foo", stip_bits,
- stip_width, stip_height);
+ stip_width, stip_height);
\&...
bitmap = Tk_GetBitmap(interp, tkwin, "foo");
.CE
-.VE
This code causes the bitmap file to be read
at compile-time and incorporates the bitmap information into
the program's executable image. The same bitmap file could be
read at run-time using \fBTk_GetBitmap\fR:
-.VS
.CS
Pixmap bitmap;
bitmap = Tk_GetBitmap(interp, tkwin, "@stip.bitmap");
.CE
-.VE
The second form is a bit more flexible (the file could be modified
after the program has been compiled, or a different string could be
provided to read a different file), but it is a little slower and
\fIbitmap\fR must have been created by \fBTk_AllocBitmapFromObj\fR or
\fBTk_GetBitmap\fR.
.PP
-.VS 8.1
When a bitmap is no longer needed, \fBTk_FreeBitmapFromObj\fR or
\fBTk_FreeBitmap\fR should be called to release it.
For \fBTk_FreeBitmapFromObj\fR the bitmap to release is specified
There should be exactly one call to \fBTk_FreeBitmapFromObj\fR
or \fBTk_FreeBitmap\fR for each call to \fBTk_AllocBitmapFromObj\fR or
\fBTk_GetBitmap\fR.
-.VE
-
.SH BUGS
+.PP
In determining whether an existing bitmap can be used to satisfy
a new request, \fBTk_AllocBitmapFromObj\fR and \fBTk_GetBitmap\fR
consider only the immediate value of the string description. For
see whether the file itself has changed, or whether the current
directory has changed, thereby causing the name to refer to
a different file.
-
.SH KEYWORDS
bitmap, pixmap
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