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| author | rsc <devnull@localhost> | 2005-01-14 17:37:50 +0000 |
|---|---|---|
| committer | rsc <devnull@localhost> | 2005-01-14 17:37:50 +0000 |
| commit | adc93f6097615f16d57e8a24a256302f2144ec4e (patch) | |
| tree | e190b0616aa060c646d62de835babf8396d36ccd /man/man3/graphics.html | |
| parent | 1ac1981659ba7abcc1c76436e4b4dfc2bc616d2a (diff) | |
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cut out the html - they're going to cause diffing problems.
Diffstat (limited to 'man/man3/graphics.html')
| -rw-r--r-- | man/man3/graphics.html | 592 |
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diff --git a/man/man3/graphics.html b/man/man3/graphics.html deleted file mode 100644 index 92f08c00..00000000 --- a/man/man3/graphics.html +++ /dev/null @@ -1,592 +0,0 @@ -<head> -<title>graphics(3) - Plan 9 from User Space</title> -<meta content="text/html; charset=utf-8" http-equiv=Content-Type> -</head> -<body bgcolor=#ffffff> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=10><td> -<tr><td width=20><td> -<tr><td width=20><td><b>GRAPHICS(3)</b><td align=right><b>GRAPHICS(3)</b> -<tr><td width=20><td colspan=2> - <br> -<p><font size=+1><b>NAME </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - Display, Point, Rectangle, Cursor, initdraw, geninitdraw, drawerror, - initdisplay, closedisplay, getdefont, getwindow, gengetwindow, - flushimage, bufimage, lockdisplay, unlockdisplay, cursorswitch, - cursorset, openfont, buildfont, freefont, Pfmt, Rfmt, strtochan, - chantostr, chantodepth – interactive graphics - -</table> -<p><font size=+1><b>SYNOPSIS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>#include <u.h><br> - #include <libc.h><br> - #include <draw.h><br> - #include <cursor.h><br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int initdraw(void (*errfun)(Display*, char*), char *font,<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - char *label)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - </table> - - </table> - </font></tt> - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - - </table> - - </table> - <tt><font size=+1>int geninitdraw(char *devdir, void(*errfun)(Display*, char*),<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>char *font, char *label, char *mousedir, char *windir,<br> - int ref)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - </table> - - </table> - <tt><font size=+1>int newwindow(char *str)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void drawerror(Display *d, char *msg)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>Display*initdisplay(char *devdir, char *win, void(*errfun)(Display*, - char*))<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void closedisplay(Display *d)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>Font* getdefont(Display *d)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int flushimage(Display *d, int vis)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int bufimage(Display *d, int n)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int lockdisplay(Display *d)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int unlockdisplay(Display *d)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int getwindow(Display *d, int ref)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int gengetwindow(Display *d, char *winname,<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - Image **ip, Screen **sp, int ref)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - </table> - - </table> - </font></tt> - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - - </table> - - </table> - <tt><font size=+1>void cursorswitch(Cursor *curs)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void cursorset(Point p)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>Font* openfont(Display *d, char *name)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>Font* buildfont(Display *d, char *desc, char *name)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>void freefont(Font *f)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int Pfmt(Fmt*)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int Rfmt(Fmt*)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>ulong strtochan(char *s)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>char* chantostr(char *s, ulong chan)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>int chantodepth(ulong chan)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>extern Display *display<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>extern Image *screen<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>extern Screen *_screen<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - <tt><font size=+1>extern Font *font<br> - </font></tt> -</table> -<p><font size=+1><b>DESCRIPTION </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - A <tt><font size=+1>Display</font></tt> structure represents a connection to the graphics device, - <a href="../man3/draw.html"><i>draw</i>(3)</a>, holding all graphics resources associated with the connection, - including in particular raster image data in use by the client - program. The structure is defined (in part) as:<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>typedef<br> - struct Display<br> - {<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - ...<br> - void (*error)(Display*, char*);<br> - ...<br> - Image *black;<br> - Image *white;<br> - Image *opaque;<br> - Image *transparent;<br> - Image *image;<br> - Font *defaultfont;<br> - Subfont*defaultsubfont;<br> - ...<br> - - </table> - };<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - </table> - A <tt><font size=+1>Point</font></tt> is a location in an Image (see below and <a href="../man3/draw.html"><i>draw</i>(3)</a>), such - as the display, and is defined as:<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>typedef<br> - struct Point {<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - int x;<br> - int y;<br> - - </table> - } Point;<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - </table> - The coordinate system has <i>x</i> increasing to the right and <i>y</i> increasing - down. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - A <tt><font size=+1>Rectangle</font></tt> is a rectangular area in an image.<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>typedef<br> - struct Rectangle {<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - Point min; /* upper left */<br> - Point max; /* lower right */<br> - - </table> - } Rectangle;<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - </table> - By definition, <tt><font size=+1>min.x</font></tt>≤<tt><font size=+1>max.x</font></tt> and <tt><font size=+1>min.y</font></tt>≤<tt><font size=+1>max.y</font></tt>. By convention, the right - (maximum <i>x</i>) and bottom (maximum <i>y</i>) edges are excluded from the - represented rectangle, so abutting rectangles have no points in - common. Thus, <tt><font size=+1>max</font></tt> contains the coordinates of the first point - beyond the rectangle. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The <tt><font size=+1>Image</font></tt> data structure is defined in <a href="../man3/draw.html"><i>draw</i>(3)</a>. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - A <tt><font size=+1>Font</font></tt> is a set of character images, indexed by runes (see <a href="../man7/utf.html"><i>utf</i>(7)</a>). - The images are organized into <tt><font size=+1>Subfonts</font></tt>, each containing the images - for a small, contiguous set of runes. The detailed format of these - data structures, which are described in detail in <a href="../man3/cachechars.html"><i>cachechars</i>(3)</a>, - is immaterial for most applications. <tt><font size=+1>Font</font></tt> and - <tt><font size=+1>Subfont</font></tt> structures contain two interrelated fields: <tt><font size=+1>ascent</font></tt>, the - distance from the top of the highest character (actually the top - of the image holding all the characters) to the baseline, and - <tt><font size=+1>height</font></tt>, the distance from the top of the highest character to - the bottom of the lowest character (and hence, the interline - spacing). See <a href="../man3/cachechars.html"><i>cachechars</i>(3)</a> for more details. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - <i>Buildfont</i> parses the font description in the buffer <tt><font size=+1>desc</font></tt>, returning - a <tt><font size=+1>Font*</font></tt> pointer that can be used by <tt><font size=+1>string</font></tt> (see <a href="../man3/draw.html"><i>draw</i>(3)</a>) to draw - characters from the font. <i>Openfont</i> does the same, but reads the - description from the named file. <i>Freefont</i> frees a font. The convention - for naming font files is: - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>/lib/font/bit/</font></tt><i>name</i><tt><font size=+1>/</font></tt><i>range</i><tt><font size=+1>.</font></tt><i>size</i><tt><font size=+1>.font - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - </table> - where <i>size</i> is approximately the height in pixels of the lower - case letters (without ascenders or descenders). <i>Range</i> gives some - indication of which characters will be available: for example - <tt><font size=+1>ascii</font></tt>, <tt><font size=+1>latin1</font></tt>, <tt><font size=+1>euro</font></tt>, or <tt><font size=+1>unicode</font></tt>. <tt><font size=+1>Euro</font></tt> includes most European languages, - punctuation marks, the International Phonetic - Alphabet, etc., but no Oriental languages. <tt><font size=+1>Unicode</font></tt> includes every - character for which appropriate-sized images exist on the system. - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - A <i>Cursor</i> is defined:<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>typedef struct<br> - Cursor {<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - Point offset;<br> - uchar clr[2*16];<br> - uchar set[2*16];<br> - - </table> - } Cursor;<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - </font></tt> - - </table> - The arrays are arranged in rows, two bytes per row, left to right - in big-endian order to give 16 rows of 16 bits each. A cursor - is displayed on the screen by adding <tt><font size=+1>offset</font></tt> to the current mouse - position, using <tt><font size=+1>clr</font></tt> as a mask to draw white at the pixels where - <tt><font size=+1>clr</font></tt> is one, and then drawing black at the pixels where <tt><font size=+1>set - </font></tt>is one. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The routine <i>initdraw</i> connects to the display; it returns –1 if - it fails and sets the error string. <i>Initdraw</i> sets up the global - variables <tt><font size=+1>display</font></tt> (the <tt><font size=+1>Display</font></tt> structure representing the connection), - <tt><font size=+1>screen</font></tt> (an <tt><font size=+1>Image</font></tt> representing the display memory itself or, if - <a href="../man1/rio.html"><i>rio</i>(1)</a> is running, the client’s window), and <tt><font size=+1>font</font></tt> (the - default font for text). The arguments to <i>initdraw</i> include a <i>label</i>, - which is written to <tt><font size=+1>/dev/label</font></tt> if non-nil so that it can be used - to identify the window when hidden (see <a href="../man1/rio.html"><i>rio</i>(1)</a>). The font is created - by reading the named <i>font</i> file. If <tt><font size=+1>font</font></tt> is null, <i>initdraw</i> reads - the file named in the environment variable <tt><font size=+1>$font</font></tt>; if - <tt><font size=+1>$font</font></tt> is not set, it imports the default (usually minimal) font - from the operating system. The global <i>font</i> will be set to point - to the resulting <tt><font size=+1>Font</font></tt> structure. The <i>errfun</i> argument is a <i>graphics - error function</i> to call in the event of a fatal error in the library; - it must never return. Its arguments are the display pointer - and an error string. If <i>errfun</i> is nil, the library provides a - default, called <i>drawerror</i>. Another effect of <i>initdraw</i> is that - it installs <a href="../man3/print.html"><i>print</i>(3)</a> formats <i>Pfmt</i> and <i>Rfmt</i> as <tt><font size=+1>%P</font></tt> and <tt><font size=+1>%R</font></tt> for printing - <tt><font size=+1>Points</font></tt> and <tt><font size=+1>Rectangles</font></tt>. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The <i>geninitdraw</i> function provides a less automated way to establish - a connection, for programs that wish to connect to multiple displays. - <i>Devdir</i> is the name of the directory containing the device files - for the display (if nil, default <tt><font size=+1>/dev</font></tt>); <i>errfun</i>, <i>font</i>, and <i>label</i> - are as in <i>initdraw</i>; <i>mousedir</i> and <i>windir</i> are the directories - holding the <tt><font size=+1>mouse</font></tt> and <tt><font size=+1>winname</font></tt> files; and <i>ref</i> specifies the refresh - function to be used to create the window, if running under <a href="../man1/rio.html"><i>rio</i>(1)</a> - (see <a href="../man3/window.html"><i>window</i>(3)</a>). - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - <i>Initdisplay</i> is part of <i>geninitdraw</i>; it sets up the display structures - but does not allocate any fonts or call <i>getwindow</i>. The arguments - are similar to those of <i>initdraw</i>; <i>win</i> names the directory, default - <tt><font size=+1>/dev</font></tt>, in which the files associated with the window reside. <i>Closedisplay</i> - disconnects the display and frees the associated - data structures. <i>Getdefont</i> builds a <tt><font size=+1>Font</font></tt> structure from in-core - data describing a default font. None of these routines is needed - by most programs, since <i>initdraw</i> calls them as needed. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The data structures associated with the display must be protected - in a multi-process program, because they assume only one process - will be using them at a time. Multi-process programs should set - <tt><font size=+1>display−>locking</font></tt> to <tt><font size=+1>1</font></tt>, to notify the library to use a locking protocol - for its own accesses, and call <i>lockdisplay</i> and - <i>unlockdisplay</i> around any calls to the graphics library that will - cause messages to be sent to the display device. <i>Initdraw</i> and - <i>geninitdraw</i> initialize the display to the locked state. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - <i>Getwindow</i> returns a pointer to the window associated with the - application; it is called automatically by <i>initdraw</i> to establish - the <tt><font size=+1>screen</font></tt> pointer but must be called after each resizing of the - window to restore the library’s connection to the window. If <tt><font size=+1>rio</font></tt> - is not running, it returns <tt><font size=+1>display−>image</font></tt>; otherwise it - negotiates with <tt><font size=+1>rio</font></tt> by looking in <tt><font size=+1>/dev/winname</font></tt> to find the name - of the window and opening it using <tt><font size=+1>namedimage</font></tt> (see <a href="../man3/allocimage.html"><i>allocimage</i>(3)</a>). - The resulting window will be created using the refresh method - <i>ref</i> (see <a href="../man3/window.html"><i>window</i>(3)</a>); this should almost always be <tt><font size=+1>Refnone</font></tt> because - <tt><font size=+1>rio</font></tt> provides backing store for the window. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - <i>Getwindow</i> overwrites the global variables <tt><font size=+1>screen</font></tt>, a pointer to - the <tt><font size=+1>Image</font></tt> defining the window (or the overall display, if no window - system is running); and <tt><font size=+1>_screen</font></tt>, a pointer to the <tt><font size=+1>Screen</font></tt> representing - the root of the window’s hierarchy. (See <a href="../man3/window.html"><i>window</i>(3)</a>. The overloading - of the <tt><font size=+1>screen</font></tt> word is an unfortunate - historical accident.) <i>Getwindow</i> arranges that <tt><font size=+1>screen</font></tt> point to - the portion of the window inside the border; sophisticated clients - may use <tt><font size=+1>_screen</font></tt> to make further subwindows. <i>Gengetwindow</i>’s extra - arguments are the full path of the window’s <tt><font size=+1>winname</font></tt> file and pointers - to be overwritten with the values of the - ‘global’ <tt><font size=+1>Image</font></tt> and <tt><font size=+1>Screen</font></tt> variables for the new window. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The mouse cursor is always displayed. The initial cursor is an - arrow. <i>Cursorswitch</i> causes the argument cursor to be displayed - instead. A zero argument causes a switch back to the arrow cursor. - <i>Cursorset</i> moves the mouse cursor to position <i>p</i>, provided (if in - a window) that the requesting program is executing in the - current window and the mouse is within the window boundaries; - otherwise <i>cursorset</i> is a no-op. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The graphics functions described in <a href="../man3/draw.html"><i>draw</i>(3)</a>, <a href="../man3/allocimage.html"><i>allocimage</i>(3)</a>, <a href="../man3/cachechars.html"><i>cachechars</i>(3)</a>, - and <a href="../man3/subfont.html"><i>subfont</i>(3)</a> are implemented by writing commands to files under - <tt><font size=+1>/dev/draw</font></tt> (see <a href="../man3/draw.html"><i>draw</i>(3)</a>); the writes are buffered, so the functions - may not take effect immediately. <i>Flushimage</i> flushes the buffer, - doing all pending graphics operations. If - <i>vis</i> is non-zero, any changes are also copied from the ‘soft screen’ - (if any) in the driver to the visible frame buffer. The various - allocation routines in the library flush automatically, as does - the event package (see <a href="../man3/event.html"><i>event</i>(3)</a>); most programs do not need to - call <i>flushimage</i>. It returns –1 on error. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - <i>Bufimage</i> is used to allocate space for <i>n</i> bytes in the display - buffer. It is used by all the graphics routines to send messages - to the display. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The functions <i>strtochan</i> and <i>chantostr</i> convert between the channel - descriptor strings used by <a href="../man7/image.html"><i>image</i>(7)</a> and the internal <tt><font size=+1>ulong</font></tt> representation - used by the graphics protocol (see <a href="../man3/draw.html"><i>draw</i>(3)</a>’s <tt><font size=+1>b</font></tt> message). <tt><font size=+1>Chantostr</font></tt> - writes at most nine bytes into the buffer pointed at by <i>s</i> and - returns <i>s</i> on success, 0 on failure. - <tt><font size=+1>Chantodepth</font></tt> returns the number of bits per pixel used by the format - specified by <i>chan</i>. Both <tt><font size=+1>chantodepth</font></tt> and <tt><font size=+1>strtochan</font></tt> return 0 when - presented with bad input.<br> - -</table> -<p><font size=+1><b>EXAMPLES </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - To reconnect to the window after a resize event,<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>if(getwindow(display, Refnone) < 0)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - sysfatal("resize failed: %r");<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - </table> - </font></tt> - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - - </table> - - </table> - To create and set up a new <a href="../man1/rio.html"><i>rio</i>(1)</a> window,<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>Image *screen2;<br> - Screen *_screen2;<br> - srvwsys = getenv("wsys");<br> - if(srvwsys == nil)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - sysfatal("can't find $wsys: %r");<br> - - </table> - rfork(RFNAMEG); /* keep mount of rio private */<br> - fd = open(srvwsys, ORDWR);<br> - if(fd < 0)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - sysfatal("can't open $wsys: %r");<br> - - </table> - /* mount creates window; see</font></tt> <i>rio</i><tt><font size=+1>(4) */<br> - if(mount(fd, −1, "/tmp", MREPL, "new −dx 300−dy 200") < 0)<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - sysfatal("can't mount new window: %r");<br> - - </table> - if(gengetwindow(display, "/tmp/winname",<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - &screen2, &_screen2, Refnone) < 0)<br> - sysfatal("resize failed: %r");<br> - - </table> - /* now open /tmp/cons, /tmp/mouse */<br> - ...<br> - </font></tt> - </table> - -</table> -<p><font size=+1><b>FILES </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>/usr/local/plan9/font/bit </font></tt> directory of fonts<br> - -</table> -<p><font size=+1><b>SOURCE </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>/usr/local/plan9/src/libdraw<br> - </font></tt> -</table> -<p><font size=+1><b>SEE ALSO </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <a href="../man1/rio.html"><i>rio</i>(1)</a>, <a href="../man3/addpt.html"><i>addpt</i>(3)</a>, <a href="../man3/allocimage.html"><i>allocimage</i>(3)</a>, <a href="../man3/cachechars.html"><i>cachechars</i>(3)</a>, <a href="../man3/subfont.html"><i>subfont</i>(3)</a>, <a href="../man3/draw.html"><i>draw</i>(3)</a>, - <a href="../man3/event.html"><i>event</i>(3)</a>, <a href="../man3/frame.html"><i>frame</i>(3)</a>, <a href="../man3/print.html"><i>print</i>(3)</a>, <a href="../man3/window.html"><i>window</i>(3)</a>, <a href="../man3/draw.html"><i>draw</i>(3)</a>, <a href="../man7/image.html"><i>image</i>(7)</a>, <a href="../man7/font.html"><i>font</i>(7)</a><br> - -</table> -<p><font size=+1><b>DIAGNOSTICS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - An error function may call <a href="../man3/errstr.html"><i>errstr</i>(3)</a> for further diagnostics.<br> - -</table> -<p><font size=+1><b>BUGS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - The names <tt><font size=+1>clr</font></tt> and <tt><font size=+1>set</font></tt> in the <tt><font size=+1>Cursor</font></tt> structure are reminders of - an archaic color map and might be more appropriately called <tt><font size=+1>white</font></tt> - and <tt><font size=+1>black</font></tt>. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - These manual pages contain many references to the now-fictitious - <tt><font size=+1>/dev/draw</font></tt>.<br> - -</table> - -<td width=20> -<tr height=20><td> -</table> -<!-- TRAILER --> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=15><td width=10><td><td width=10> -<tr><td><td> -<center> -<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> -</center> -</table> -<!-- TRAILER --> -</body></html> |