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sync code with last improvements from OpenBSD

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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
.\"
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
.\" Digital Equipment Corporation
.\"
.\" Portions Copyright \(co 1990, 1991 by
.\" Tektronix, Inc.
.\"
.\" Permission to use, copy, modify and distribute this documentation for
.\" any purpose and without fee is hereby granted, provided that the above
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.\"
.ds xT X Toolkit Intrinsics \- C Language Interface
.ds xW Athena X Widgets \- C Language X Toolkit Interface
.ds xL Xlib \- C Language X Interface
.ds xC Inter-Client Communication Conventions Manual
.TH ImageByteOrder __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
.SH NAME
ImageByteOrder, BitmapBitOrder, BitmapPad, BitmapUnit, DisplayHeight, DisplayHeightMM, DisplayWidth, DisplayWidthMM, XListPixmapFormats, XPixmapFormatValues \- image format functions and macros
.SH SYNTAX
.HP
XPixmapFormatValues *XListPixmapFormats\^(\^Display *\fIdisplay\fP, int *\fIcount_return\fP\^);
.HP
int ImageByteOrder\^(\^Display *\fIdisplay\fP\^);
.HP
int BitmapBitOrder\^(\^Display *\fIdisplay\fP\^);
.HP
int BitmapPad\^(\^Display *\fIdisplay\fP\^);
.HP
int BitmapUnit\^(\^Display *\fIdisplay\fP\^);
.HP
int DisplayHeight\^(\^Display *\fIdisplay\fP\^, \^int \fIscreen_number\fP\^);
.HP
int DisplayHeightMM\^(\^Display *\fIdisplay\fP\^, \^int \fIscreen_number\fP\^);
.HP
int DisplayWidth\^(\^Display *\fIdisplay\fP\^, \^int \fIscreen_number\fP\^);
.HP
int DisplayWidthMM\^(\^Display *\fIdisplay\fP\^, \^int \fIscreen_number\fP\^);
.SH ARGUMENTS
.IP \fIdisplay\fP 1i
Specifies the connection to the X server.
.IP \fIcount_return\fP 1i
Returns the number of pixmap formats that are supported by the display.
.IP \fIscreen_number\fP 1i
Specifies the appropriate screen number on the host server.
.SH DESCRIPTION
The
.B XListPixmapFormats
function returns an array of
.B XPixmapFormatValues
structures that describe the types of Z format images supported
by the specified display.
If insufficient memory is available,
.B XListPixmapFormats
returns NULL.
To free the allocated storage for the
.B XPixmapFormatValues
structures, use
.BR XFree .
.LP
The
.B ImageByteOrder
macro specifies the required byte order for images for each scanline unit in
XY format (bitmap) or for each pixel value in Z format.
.LP
The
.B BitmapBitOrder
macro returns
.B LSBFirst
or
.B MSBFirst
to indicate whether the leftmost bit in the bitmap as displayed
on the screen is the least or most significant bit in the unit.
.LP
The
.B BitmapPad
macro returns the number of bits that each scanline must be padded.
.LP
The
.B BitmapUnit
macro returns the size of a bitmap's scanline unit in bits.
.LP
The
.B DisplayHeight
macro returns the height of the specified screen in pixels.
.LP
The
.B DisplayHeightMM
macro returns the height of the specified screen in millimeters.
.LP
The
.B DisplayWidth
macro returns the width of the screen in pixels.
.LP
The
.B DisplayWidthMM
macro returns the width of the specified screen in millimeters.
.SH STRUCTURES
The
.B XPixmapFormatValues
structure provides an interface to the pixmap format information
that is returned at the time of a connection setup.
It contains:
.EX
typedef struct {
int depth;
int bits_per_pixel;
int scanline_pad;
} XPixmapFormatValues;
.EE
.SH "SEE ALSO"
AllPlanes(__libmansuffix__),
BlackPixelOfScreen(__libmansuffix__),
IsCursorKey(__libmansuffix__),
XFree(__libmansuffix__)
.br
\fI\*(xL\fP