feedback.n

linux 下的源代码分析阅读器 red hat公司新版

'\"
'\" Copyright (c) 1996 DSC Technologies Corporation
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\" @(#) feedback.n
'/" 
.so man.macros
.HS feedback iwid
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
.SH NAME
feedback \- Create and manipulate a feedback widget to display feedback on
the current status of an ongoing operation to the user.
.SH SYNOPSIS
\fBfeedback\fI \fIpathName \fR?\fIoptions\fR?
.SH "INHERITANCE"
itk::Widget <- Labeledwidget <- Feedback
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 4c 8c 12c
\fBbackground\fR	\fBcursor\fR 	\fBforeground\fR	\fBhighlightColor\fR
\fBhighlightThickness\fR
.fi
.LP
See the "options" manual entry for details on the standard options.
.SH "INHERITED OPTIONS"
.LP
.nf
.ta 4c 8c 12c
\fBlabelBitmap\fR	\fBlabelFont\fR	\fBlabelImage\fR	\fBlabelMargin\fR
\fBlabelPos\fR	\fBlabelText\fR	\fBlabelVariable\fR 
.fi
.LP
See the "labeledwidget" class manual entry for details on the inherited options.
.SH "WIDGET-SPECIFIC OPTIONS"
.LP
.nf
Name:	\fBbarcolor\fR
Class:	\fBBarColor\fR
Command-Line Switch:	\fB-barcolor\fR
.fi
.IP
Specifies the color of the status bar, in any of the forms
acceptable to \fBTk_GetColor\fR.  The default is DodgerBlue.
.LP
.nf
Name:	\fBbarheight\fR
Class:	\fBBarHeight\fR
Command-Line Switch:	\fB-barheight\fR
.fi
.IP
Specifies the height of the status bar, in any of the forms
acceptable to \fBTk_GetPixels\fR. The default is 20.
.LP
.nf
Name:	\fBtroughColor\fR
Class:	\fBTroughColor\fR
Command-Line Switch:	\fB-troughcolor\fR
.fi
.IP
Specifies the color of the frame in which the status bar sits,
in any of the forms acceptable to \fBTk_GetColor\fR.  The default is white.
.LP
.nf
Name:	\fBsteps\fR
Class:	\fBSteps\fR
Command-Line Switch:	\fB-steps\fR
.fi
.IP
Specifies the total number of steps for the status bar. The default is 10.
.LP

.SH DESCRIPTION
.PP
The \fBfeedback\fR command creates a widget to display feedback on
the current status of an ongoing operation to the user. Display is given as
a percentage and as a thermometer type bar. Options exist for adding a label
and controlling its position.

.SH "METHODS"
.PP
The \fBfeedback\fR command creates a new Tcl command whose
name is \fIpathName\fR.  This command may be used to invoke various
operations on the widget.  It has the following general form:
.DS C
\fIpathName option \fR?\fIarg arg ...\fR?
.DE
\fIOption\fR and the \fIarg\fRs
determine the exact behavior of the command.  The following
commands are possible for scrolledtext widgets:

.SH "WIDGET-SPECIFIC METHODS"
.TP
\fIpathName \fBcget\fR \fIoption\fR
Returns the current value of the configuration option given
by \fIoption\fR.
\fIOption\fR may have any of the values accepted by the \fBscrolledhtml\fR
command.
.TP
\fIpathName\fR \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
Query or modify the configuration options of the widget.
If no \fIoption\fR is specified, returns a list describing all of
the available options for \fIpathName\fR (see \fBTk_ConfigureInfo\fR for
information on the format of this list).  If \fIoption\fR is specified
with no \fIvalue\fR, then the command returns a list describing the
one named option (this list will be identical to the corresponding
sublist of the value returned if no \fIoption\fR is specified).  If
one or more \fIoption\-value\fR pairs are specified, then the command
modifies the given widget option(s) to have the given value(s);  in
this case the command returns an empty string.
\fIOption\fR may have any of the values accepted by the \fBfeedback\fR
command.
.TP
\fIpathName\fR \fBreset\fR
Reset the current number of steps completed to 0, and configures the
percentage complete label text to 0%
.TP
\fIpathName\fR \fBstep\fR ?\fIinc\fR?
Increase the current number of steps completed by the amount specified
by \fIinc\fR. \fIInc\fR defaults to 1.

.SH EXAMPLE
.DS
 feedback .fb -labeltext "Status" -steps 20
 pack .fb -padx 10 -pady 10 -fill both -expand yes

 for {set i 0} {$i < 20} {incr i} {
     .fb step
     after 500
 }
.DE
.SH ACKNOWLEDGEMENTS
Sam Shen
.IP
This code is based largely on his feedback.tcl code from tk inspect. The 
original feedback code is copyright 1995 Lawrence Berkeley Laboratory.
.LP
.SH AUTHOR
Kris Raney
.SH KEYWORDS
feedback, widget