XmeToVerticalPixels(3X) UNIX System V XmeToVerticalPixels(3X)
NAME
XmeToVerticalPixels - Converts from real-world dimensions to
pixels
SYNOPSIS
#include <Xm/XmP.h>
XmImportOperator XmeToVerticalPixels(
Widget widget,
int offset,
XtArgVal *value);
VERSION
This page documents Motif 2.1.
DESCRIPTION
XmeToVerticalPixels converts a vertical distance from a
real-world dimensional unit (such as thousandths of an inch)
to pixels. This conversion is based on the vertical
resolution of the screen. The choice of real-world
dimensional unit is stored in the XmNunitTyperesource.
For example, suppose that widget has an XmNunitType resource
value of Xm1000TH_INCHES. If the input value were 2000
(meaning 2000/1000 inches or 2 inches), then
XmeToVerticalPixels determines how many vertical pixels fall
within 2 inches. Because different screens have different
resolutions, the returned value might be 160 pixels on one
screen and 200 pixels on another.
Typically, your widget will call this function in a
synthetic resource record.
XmeToVerticalPixels is an XmImportProc.
widget Specifies the widget.
offset Specifies the offset (in bytes) of a synthetic
resource field in the widget record.
value Specifies a value in the XmNunitType real-world
dimensional units used by widget and returns a
value in pixels.
RETURN
Returns one of the following XmImportOperator values:
XmSYNTHETIC_NONE
The caller of the XmImportProc is not responsible
for copying the converted value into the resource
specified by offset.
XmSYNTHETIC_LOAD
Page 1 (printed 7/20/06)
XmeToVerticalPixels(3X) UNIX System V XmeToVerticalPixels(3X)
The caller of the XmImportProc is responsible for
copying the converted value into the resource
specified by offset.
Motif's synthetic resource mechanism is typically the caller
of XmeToVerticalPixels. Therefore, if XmeToVerticalPixels
returns XmSYTHETIC_LOAD, Motif synthetic resource mechanism
will take care of copying (and casting) value into the
resource symbolized by offset.
RELATED
XmeFromHorizontalPixels(3), XmeFromVerticalPixels(3), and
XmeToHorizontalPixels(3).
Page 2 (printed 7/20/06)
