1ImageByteOrder(3) XLIB FUNCTIONS ImageByteOrder(3)
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6 ImageByteOrder, BitmapBitOrder, BitmapPad, BitmapUnit, DisplayHeight,
7 DisplayHeightMM, DisplayWidth, DisplayWidthMM, XListPixmapFormats,
8 XPixmapFormatValues - image format functions and macros
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11 XPixmapFormatValues *XListPixmapFormats(Display *display, int
12 *count_return);
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14 int ImageByteOrder(Display *display);
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16 int BitmapBitOrder(Display *display);
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18 int BitmapPad(Display *display);
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20 int BitmapUnit(Display *display);
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22 int DisplayHeight(Display *display, int screen_number);
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24 int DisplayHeightMM(Display *display, int screen_number);
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26 int DisplayWidth(Display *display, int screen_number);
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28 int DisplayWidthMM(Display *display, int screen_number);
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31 display Specifies the connection to the X server.
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33 count_return
34 Returns the number of pixmap formats that are supported by
35 the display.
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37 screen_number
38 Specifies the appropriate screen number on the host server.
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41 The XListPixmapFormats function returns an array of XPixmapFormatValues
42 structures that describe the types of Z format images supported by the
43 specified display. If insufficient memory is available, XListPixmap‐
44 Formats returns NULL. To free the allocated storage for the XPixmap‐
45 FormatValues structures, use XFree.
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47 The ImageByteOrder macro specifies the required byte order for images
48 for each scanline unit in XY format (bitmap) or for each pixel value in
49 Z format.
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51 The BitmapBitOrder macro returns LSBFirst or MSBFirst to indicate
52 whether the leftmost bit in the bitmap as displayed on the screen is
53 the least or most significant bit in the unit.
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55 The BitmapPad macro returns the number of bits that each scanline must
56 be padded.
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58 The BitmapUnit macro returns the size of a bitmap's scanline unit in
59 bits.
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61 The DisplayHeight macro returns the height of the specified screen in
62 pixels.
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64 The DisplayHeightMM macro returns the height of the specified screen in
65 millimeters.
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67 The DisplayWidth macro returns the width of the screen in pixels.
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69 The DisplayWidthMM macro returns the width of the specified screen in
70 millimeters.
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73 The XPixmapFormatValues structure provides an interface to the pixmap
74 format information that is returned at the time of a connection setup.
75 It contains:
76 typedef struct {
77 int depth;
78 int bits_per_pixel;
79 int scanline_pad;
80 } XPixmapFormatValues;
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83 AllPlanes(3), BlackPixelOfScreen(3), IsCursorKey(3), XFree(3)
84 Xlib - C Language X Interface
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88X Version 11 libX11 1.7.3.1 ImageByteOrder(3)