'\"
'\" Copyright (c) 1997 Maorong Zou
'\" 
.TH EZ_QueryPixelValue 3 "" EZWGL "EZWGL Functions"
.BS
.SH NAME
EZ_QueryPixelValue \- query pixel value given location

.SH SYNOPSIS
.nf
.B #include <EZ.h>
.sp
.BI "int EZ_QueryPixelValue( EZ_Widget" widget ", int " x ", int " y ", unsigned long " *pv);

.SH ARGUMENTS
\fIwidget\fR  Specifies an EZ widget.
.sp
\fIx, y\fR  Specifies a location.
.sp
\fIpv\fR Specifies the pixel value return.

.SH DESCRIPTION
\fBEZ_QueryPixelValue\fR returns the pixel value of the specified
location of the widget window. If widget is not viewable. It returns 0.
Otherwise, it returns the pixel value to \f*pv\fR and returns 1.

.SH "SEE ALSO"
EZ_PixelValue2RGB(3)