203 lines
4.0 KiB
Plaintext
203 lines
4.0 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ny0
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.TH ImageByteOrder 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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ImageByteOrder, BitmapBitOrder, BitmapPad, BitmapUnit, DisplayHeight, DisplayHeightMM, DisplayWidth, DisplayWidthMM, XListPixmapFormats, XPixmapFormatValues \- image format functions and macros
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.SH SYNTAX
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XPixmapFormatValues *XListPixmapFormats\^(\^\fIdisplay\fP, \fIcount_return\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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int *\fIcount_return\fP\^;
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.LP
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ImageByteOrder\^(\^\fIdisplay\fP\^)
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.LP
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BitmapBitOrder\^(\^\fIdisplay\fP\^)
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.LP
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BitmapPad\^(\^\fIdisplay\fP\^)
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.LP
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BitmapUnit\^(\^\fIdisplay\fP\^)
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.LP
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DisplayHeight\^(\^\fIdisplay\fP\^, \^\fIscreen_number\fP\^)
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.LP
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DisplayHeightMM\^(\^\fIdisplay\fP\^, \^\fIscreen_number\fP\^)
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.LP
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DisplayWidth\^(\^\fIdisplay\fP\^, \^\fIscreen_number\fP\^)
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.LP
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DisplayWidthMM\^(\^\fIdisplay\fP\^, \^\fIscreen_number\fP\^)
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.SH ARGUMENTS
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.ds Cn pixmap formats that are supported by the display
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.IP \fIcount_return\fP 1i
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Returns the number of \*(Cn.
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.IP \fIscreen_number\fP 1i
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Specifies the appropriate screen number on the host server.
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.SH DESCRIPTION
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The
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.ZN XListPixmapFormats
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function returns an array of
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.ZN XPixmapFormatValues
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structures that describe the types of Z format images supported
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by the specified display.
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If insufficient memory is available,
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.ZN XListPixmapFormats
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returns NULL.
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To free the allocated storage for the
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.ZN XPixmapFormatValues
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structures, use
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.ZN XFree .
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.LP
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The
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.ZN ImageByteOrder
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macro specifies the required byte order for images for each scanline unit in
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XY format (bitmap) or for each pixel value in Z format.
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.LP
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The
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.ZN BitmapBitOrder
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macro returns
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.ZN LSBFirst
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or
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.ZN MSBFirst
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to indicate whether the leftmost bit in the bitmap as displayed
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on the screen is the least or most significant bit in the unit.
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.LP
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The
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.ZN BitmapPad
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macro returns the number of bits that each scanline must be padded.
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.LP
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The
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.ZN BitmapUnit
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macro returns the size of a bitmap's scanline unit in bits.
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.LP
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The
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.ZN DisplayHeight
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macro returns the height of the specified screen in pixels.
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.LP
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The
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.ZN DisplayHeightMM
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macro returns the height of the specified screen in millimeters.
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.LP
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The
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.ZN DisplayWidth
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macro returns the width of the screen in pixels.
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.LP
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The
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.ZN DisplayWidthMM
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macro returns the width of the specified screen in millimeters.
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.SH STRUCTURES
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The
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.ZN XPixmapFormatValues
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structure provides an interface to the pixmap format information
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that is returned at the time of a connection setup.
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It contains:
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.Ds 0
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.TA .5i 3i
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.ta .5i 3i
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typedef struct {
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int depth;
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int bits_per_pixel;
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int scanline_pad;
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} XPixmapFormatValues;
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.De
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.SH "SEE ALSO"
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AllPlanes(3X11),
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BlackPixelOfScreen(3X11),
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IsCursorKey(3X11),
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XFree(3X11)
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.br
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\fI\*(xL\fP
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