DefaultVisual(3x)

1AllPlanes(3X11)                 XLIB FUNCTIONS                 AllPlanes(3X11)
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3
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NAME

6       AllPlanes, BlackPixel, WhitePixel, ConnectionNumber, DefaultColormap,
7       DefaultDepth, XListDepths, DefaultGC, DefaultRootWindow, Default‐
8       ScreenOfDisplay, DefaultScreen, DefaultVisual, DisplayCells, Display‐
9       Planes, DisplayString, XMaxRequestSize, XExtendedMaxRequestSize, Last‐
10       KnownRequestProcessed, NextRequest, ProtocolVersion, ProtocolRevision,
11       QLength, RootWindow, ScreenCount, ScreenOfDisplay, ServerVendor, Ven‐
12       dorRelease - Display macros and functions
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SYNTAX

15       unsigned long AllPlanes;
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17       unsigned long BlackPixel(Display *display, int screen_number);
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19       unsigned long WhitePixel(Display *display, int screen_number);
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21       int ConnectionNumber(Display *display);
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23       Colormap DefaultColormap(Display *display, int screen_number);
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25       int DefaultDepth(Display *display, int screen_number);
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27       int *XListDepths(Display *display, int screen_number, int
28              count_return);
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30       GC DefaultGC(Display *display, int screen_number);
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32       Window DefaultRootWindow(Display *display);
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34       Screen *DefaultScreenOfDisplay(Display *display);
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36       int DefaultScreen(Display *display);
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38       Visual *DefaultVisual(Display *display, int screen_number);
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40       int DisplayCells(Display *display, int screen_number);
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42       int DisplayPlanes(Display *display, int screen_number);
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44       char *DisplayString(Display *display);
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46       long XMaxRequestSize(Display *display)
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48       long XExtendedMaxRequestSize(Display *display)
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50       unsigned long LastKnownRequestProcessed(Display *display);
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52       unsigned long NextRequest(Display *display);
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54       int ProtocolVersion(Display *display);
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56       int ProtocolRevision(Display *display);
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58       int QLength(Display *display);
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60       Window RootWindow(Display *display, int screen_number);
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62       int ScreenCount(Display *display);
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64       Screen *ScreenOfDisplay(Display *display, int screen_number);
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66       char *ServerVendor(Display *display)
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68       int VendorRelease(Display *display)
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ARGUMENTS

71       display   Specifies the connection to the X server.
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73       screen_number
74                 Specifies the appropriate screen number on the host server.
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76       count_return
77                 Returns the number of depths.
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DESCRIPTION

80       The AllPlanes macro returns a value with all bits set to 1 suitable for
81       use in a plane argument to a procedure.
82
83       The BlackPixel macro returns the black pixel value for the specified
84       screen.
85
86       The WhitePixel macro returns the white pixel value for the specified
87       screen.
88
89       The ConnectionNumber macro returns a connection number for the speci‐
90       fied display.
91
92       The DefaultColormap macro returns the default colormap ID for alloca‐
93       tion on the specified screen.
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95       The DefaultDepth macro returns the depth (number of planes) of the
96       default root window for the specified screen.
97
98       The XListDepths function returns the array of depths that are available
99       on the specified screen.  If the specified screen_number is valid and
100       sufficient memory for the array can be allocated, XListDepths sets
101       count_return to the number of available depths.  Otherwise, it does not
102       set count_return and returns NULL.  To release the memory allocated for
103       the array of depths, use XFree.
104
105       The DefaultGC macro returns the default GC for the root window of the
106       specified screen.
107
108       The DefaultRootWindow macro returns the root window for the default
109       screen.
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111       The DefaultScreenOfDisplay macro returns the default screen of the
112       specified display.
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114       The DefaultScreen macro returns the default screen number referenced in
115       the XOpenDisplay routine.
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117       The DefaultVisual macro returns the default visual type for the speci‐
118       fied screen.
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120       The DisplayCells macro returns the number of entries in the default
121       colormap.
122
123       The DisplayPlanes macro returns the depth of the root window of the
124       specified screen.
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126       The DisplayString macro returns the string that was passed to XOpenDis‐
127       play when the current display was opened.
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129       The XMaxRequestSize function returns the maximum request size (in
130       4-byte units) supported by the server without using an extended-length
131       protocol encoding.  Single protocol requests to the server can be no
132       larger than this size unless an extended-length protocol encoding is
133       supported by the server.  The protocol guarantees the size to be no
134       smaller than 4096 units (16384 bytes).  Xlib automatically breaks data
135       up into multiple protocol requests as necessary for the following func‐
136       tions: XDrawPoints, XDrawRectangles, XDrawSegments, XFillArcs, XFill‐
137       Rectangles, and XPutImage.
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139       The XExtendedMaxRequestSize function returns zero if the specified dis‐
140       play does not support an extended-length protocol encoding; otherwise,
141       it returns the maximum request size (in 4-byte units) supported by the
142       server using the extended-length encoding.  The Xlib functions XDraw‐
143       Lines, XDrawArcs, XFillPolygon, XChangeProperty, XSetClipRectangles,
144       and XSetRegion will use the extended-length encoding as necessary, if
145       supported by the server.  Use of the extended-length encoding in other
146       Xlib functions (for example, XDrawPoints, XDrawRectangles, XDrawSeg‐
147       ments, XFillArcs, XFillRectangles, XPutImage) is permitted but not
148       required; an Xlib implementation may choose to split the data across
149       multiple smaller requests instead.
150
151       The LastKnownRequestProcessed macro extracts the full serial number of
152       the last request known by Xlib to have been processed by the X server.
153
154       The NextRequest macro extracts the full serial number that is to be
155       used for the next request.
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157       The ProtocolVersion macro returns the major version number (11) of the
158       X protocol associated with the connected display.
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160       The ProtocolRevision macro returns the minor protocol revision number
161       of the X server.
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163       The QLength macro returns the length of the event queue for the con‐
164       nected display.
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166       The RootWindow macro returns the root window.
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168       The ScreenCount macro returns the number of available screens.
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170       The ScreenOfDisplay macro returns a pointer to the screen of the speci‐
171       fied display.
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173       The ServerVendor macro returns a pointer to a null-terminated string
174       that provides some identification of the owner of the X server imple‐
175       mentation.
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177       The VendorRelease macro returns a number related to a vendor's release
178       of the X server.
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NAME

SYNTAX

ARGUMENTS

DESCRIPTION

SEE ALSO