ImageByteOrder(3) XLIB FUNCTIONS ImageByteOrder(3)
NAME
ImageByteOrder, BitmapBitOrder, BitmapPad, BitmapUnit, DisplayHeight,
DisplayHeightMM, DisplayWidth, DisplayWidthMM, XListPixmapFormats,
XPixmapFormatValues - image format functions and macros
SYNTAX
XPixmapFormatValues *XListPixmapFormats(Display *
display, int
*
count_return);
int ImageByteOrder(Display *
display);
int BitmapBitOrder(Display *
display);
int BitmapPad(Display *
display);
int BitmapUnit(Display *
display);
int DisplayHeight(Display *
display, int
screen_number);
int DisplayHeightMM(Display *
display, int
screen_number);
int DisplayWidth(Display *
display, int
screen_number);
int DisplayWidthMM(Display *
display, int
screen_number);
ARGUMENTS
display Specifies the connection to the X server.
count_return Returns the number of pixmap formats that are supported by
the display.
screen_number Specifies the appropriate screen number on the host server.
DESCRIPTION
The
XListPixmapFormats function returns an array of
XPixmapFormatValues structures that describe the types of Z format
images supported by the specified display. If insufficient memory is
available,
XListPixmapFormats returns NULL. To free the allocated
storage for the
XPixmapFormatValues structures, use
XFree.
The
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.
The
BitmapBitOrder macro returns
LSBFirst or
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.
The
BitmapPad macro returns the number of bits that each scanline
must be padded.
The
BitmapUnit macro returns the size of a bitmap's scanline unit in
bits.
The
DisplayHeight macro returns the height of the specified screen in
pixels.
The
DisplayHeightMM macro returns the height of the specified screen
in millimeters.
The
DisplayWidth macro returns the width of the screen in pixels.
The
DisplayWidthMM macro returns the width of the specified screen in
millimeters.
STRUCTURES
The
XPixmapFormatValues structure provides an interface to the pixmap
format information that is returned at the time of a connection
setup. It contains:
typedef struct {
int depth;
int bits_per_pixel;
int scanline_pad;
} XPixmapFormatValues;
SEE ALSO
AllPlanes(3),
BlackPixelOfScreen(3),
IsCursorKey(3),
XFree(3) Xlib - C Language X InterfaceX Version 11 libX11 1.8.10 ImageByteOrder(3)
