man/man3/Tk_Grab.3 - toolchains/skids - Git at Google

 '\"
 '\" Copyright (c) 1998-2000 by Scriptics Corporation.
 '\" All rights reserved.
 '\"
 '\" RCS: @(#) $Id: Grab.3,v 1.1 2000/04/25 02:12:15 ericm Exp $
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 '\" The definitions below are for supplemental macros used in Tcl/Tk
 '\" manual entries.
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 .AS Tcl_Interp Tcl_CreateInterp in/out
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 .TH Tk_Grab 3 "" Tk "Tk Library Procedures"
 .BS
 .SH NAME
 Tk_Grab, Tk_Ungrab \- manipulate grab state in an application
 .SH SYNOPSIS
 .nf
 \fB#include <tk.h>\fR
 .sp
 int
 \fBTk_Grab\fR(\fIinterp, tkwin, grabGlobal\fR)
 .sp
 void
 \fBTk_Ungrab\fR(\fItkwin\fR)

 .SH ARGUMENTS
 .AP Tcl_Interp *interp in
 Interpreter to use for error reporting
 .AP Tk_Window tkwin in
 Window on whose behalf the pointer is to be grabbed or released
 .AP int grabGlobal in
 Boolean indicating whether the grab is global or application local
 .BE

 .SH DESCRIPTION
 .PP
 These functions are used to set or release a global or
 application local grab.  When a grab is set on a particular window
 in a Tk application, mouse and keyboard events can only be received by
 that window and its descendants.  Mouse and keyboard events for
 windows outside the tree rooted at \fItkwin\fR will be redirected to
 \fItkwin\fR.  If the grab is global, then all mouse and keyboard
 events for windows outside the tree rooted at \fItkwin\fR (even those
 intended for windows in other applications) will be redirected to
 \fItkwin\fR.  If the grab is application local, only mouse and
 keyboard events intended for a windows within the same application
 (but outside the tree rooted at \fItkwin\fR) will be redirected.

 .PP
 \fBTk_Grab\fR sets a grab on a particular window.  \fITkwin\fR
 specifies the window on whose behalf the pointer is to be grabbed.
 \fIGrabGlobal\fR indicates whether the grab should be global or
 application local; if it is non-zero, it means the grab should be
 global.  Normally, \fBTk_Grab\fR returns TCL_OK; if an error occurs
 and the grab cannot be set, TCL_ERROR is returned and an error message
 is left if \fIinterp\fR's result.  Once this call completes
 successfully, no window outside the tree rooted at \fItkwin\fR will
 receive pointer- or keyboard-related events until the next call to
 Tk_Ungrab.  If a previous grab was in effect within the application,
 then it is replaced with a new one.

 .PP
 \fBTcl_Ungrab\fR releases a grab on the mouse pointer and keyboard, if
 there is one set on the window given by \fItkwin\fR.  Once a grab is
 released, pointer and keyboard events will start being delivered to
 other windows again.

 .SH KEYWORDS
 grab, window
	'\"
	'\" Copyright (c) 1998-2000 by Scriptics Corporation.
	'\" All rights reserved.
	'\"
	'\" RCS: @(#) $Id: Grab.3,v 1.1 2000/04/25 02:12:15 ericm 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",
	'\" 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
	'\" 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
	'\" 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.
	'\"
	'\" 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.
	.if t .wh -1.3i ^B
	.nr ^l \n(.l
	.ad b
	'\" # Start an argument description
	.de AP
	.ie !"\\$4"" .TP \\$4
	.el \{\
	. ie !"\\$2"" .TP \\n()Cu
	. el .TP 15
	.\}
	.ta \\n()Au \\n()Bu
	.ie !"\\$3"" \{\
	\&\\$1 \\fI\\$2\\fP (\\$3)
	.\".b
	.\}
	.el \{\
	.br
	.ie !"\\$2"" \{\
	\&\\$1 \\fI\\$2\\fP
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	.el \{\
	\&\\fI\\$1\\fP
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	..
	'\" # define tabbing values for .AP
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	.if !"\\$1"" .nr )A \\w'\\$1'u+3n
	.nr )B \\n()Au+15n
	.\"
	.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+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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	\h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
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	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
	.\}
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	.nr ^x \\n(^tu+1v-\\n(^Yu
	\kx\h'-\\nxu'\h'\|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'\|0u'\c
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	.de SO
	.SH "STANDARD OPTIONS"
	.LP
	.nf
	.ta 5.5c 11c
	.ft B
	..
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	.de SE
	.fi
	.ft R
	.LP
	See the \\fBoptions\\fR manual entry for details on the standard options.
	..
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	.de OP
	.LP
	.nf
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	Command-Line Name: \\fB\\$1\\fR
	Database Name: \\fB\\$2\\fR
	Database Class: \\fB\\$3\\fR
	.fi
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	.de UL
	\\$1\l'\|0\(ul'\\$2
	..
	.TH Tk_Grab 3 "" Tk "Tk Library Procedures"
	.BS
	.SH NAME
	Tk_Grab, Tk_Ungrab \- manipulate grab state in an application
	.SH SYNOPSIS
	.nf
	\fB#include <tk.h>\fR
	.sp
	int
	\fBTk_Grab\fR(\fIinterp, tkwin, grabGlobal\fR)
	.sp
	void
	\fBTk_Ungrab\fR(\fItkwin\fR)

	.SH ARGUMENTS
	.AP Tcl_Interp *interp in
	Interpreter to use for error reporting
	.AP Tk_Window tkwin in
	Window on whose behalf the pointer is to be grabbed or released
	.AP int grabGlobal in
	Boolean indicating whether the grab is global or application local
	.BE

	.SH DESCRIPTION
	.PP
	These functions are used to set or release a global or
	application local grab. When a grab is set on a particular window
	in a Tk application, mouse and keyboard events can only be received by
	that window and its descendants. Mouse and keyboard events for
	windows outside the tree rooted at \fItkwin\fR will be redirected to
	\fItkwin\fR. If the grab is global, then all mouse and keyboard
	events for windows outside the tree rooted at \fItkwin\fR (even those
	intended for windows in other applications) will be redirected to
	\fItkwin\fR. If the grab is application local, only mouse and
	keyboard events intended for a windows within the same application
	(but outside the tree rooted at \fItkwin\fR) will be redirected.

	.PP
	\fBTk_Grab\fR sets a grab on a particular window. \fITkwin\fR
	specifies the window on whose behalf the pointer is to be grabbed.
	\fIGrabGlobal\fR indicates whether the grab should be global or
	application local; if it is non-zero, it means the grab should be
	global. Normally, \fBTk_Grab\fR returns TCL_OK; if an error occurs
	and the grab cannot be set, TCL_ERROR is returned and an error message
	is left if \fIinterp\fR's result. Once this call completes
	successfully, no window outside the tree rooted at \fItkwin\fR will
	receive pointer- or keyboard-related events until the next call to
	Tk_Ungrab. If a previous grab was in effect within the application,
	then it is replaced with a new one.

	.PP
	\fBTcl_Ungrab\fR releases a grab on the mouse pointer and keyboard, if
	there is one set on the window given by \fItkwin\fR. Once a grab is
	released, pointer and keyboard events will start being delivered to
	other windows again.

	.SH KEYWORDS
	grab, window