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Annotation of 43BSD/contrib/X/Xlib/XlibInternal.h, revision 1.1

1.1     ! root        1: #include <X/mit-copyright.h>
        !             2: 
        !             3: /* $Header: XlibInternal.h,v 10.8 86/02/01 15:42:21 tony Rel $ */
        !             4: /* Copyright 1984, 1985  Massachusetts Institute of Technology */
        !             5: 
        !             6: /*
        !             7:  *     XlibInternal.h - Header definition and support file for the internal
        !             8:  *     support routines (XlibInternal) used by the C subroutine interface
        !             9:  *     library (Xlib) to the X Window System.
        !            10:  *
        !            11:  */
        !            12: 
        !            13: #include <sys/types.h>
        !            14: #include "Xlib.h"
        !            15: #include "../X/Xproto.h"
        !            16: #include <stdio.h>
        !            17: #include <netinet/in.h>
        !            18: #include <sys/ioctl.h>
        !            19: #include <netdb.h>
        !            20: #include <errno.h>
        !            21: 
        !            22: extern int errno;                      /* Internal system error number. */
        !            23: extern char *malloc();                 /* commonly used in the library. */
        !            24: extern char *realloc();                        /* used with some frequency.     */
        !            25: 
        !            26: extern Display *_XlibCurrentDisplay;   /* Currently active Display. */
        !            27: 
        !            28: extern (*_XIOErrorFunction)();         /* X system error reporting routine. */
        !            29: extern (*_XErrorFunction)();           /* X_Error event reporting routine. */
        !            30: 
        !            31: /*
        !            32:  * Boolean datatype.
        !            33:  */
        !            34: 
        !            35: typedef enum _bool {FALSE, TRUE} Bool;
        !            36: 
        !            37: /* Pointers to the above routines. */
        !            38: #define _XIOError (*_XIOErrorFunction)
        !            39: #define _XError (*_XErrorFunction)
        !            40: 
        !            41: #define BUFSIZE 2048                   /* X output buffer size. */
        !            42: 
        !            43: 
        !            44: /*
        !            45:  * X Protocol packetizing macros.
        !            46:  */
        !            47: 
        !            48: 
        !            49: /*
        !            50:  * GetReq - Get the next avilable X request packet in the buffer and
        !            51:  * return it. 
        !            52:  *
        !            53:  * "cd" is the X protocol code.
        !            54:  * "id" is the window id of the requesting window.
        !            55:  */
        !            56: #define GetReq(cd, id) \
        !            57:        dpy = _XlibCurrentDisplay;\
        !            58:        if ((dpy->bufptr + sizeof(XReq)) > dpy->bufmax)\
        !            59:                _XFlush(dpy);\
        !            60:        req = (XReq *)dpy->bufptr;\
        !            61:        req->code = cd;\
        !            62:        req->windowId = id;\
        !            63:        dpy->bufptr += sizeof(XReq);\
        !            64:        dpy->request++;\
        !            65:        dpy->lastdraw = NULL
        !            66: 
        !            67: /*
        !            68:  * Data - Place data in the buffer and pad the end to provide
        !            69:  * 32 bit word alignment.  Transmit if the buffer fills.
        !            70:  *
        !            71:  * "dpy" is a pointer to a Display.
        !            72:  * "data" is a pinter to a data buffer.
        !            73:  * "len" is the lenght of the data buffer.
        !            74:  */
        !            75: #define Data(dpy, data, len) \
        !            76:        if (dpy->bufptr + len < dpy->bufmax) {\
        !            77:                bcopy(data, dpy->bufptr, len);\
        !            78:                dpy->bufptr += (len + 3) & ~3;\
        !            79:        } else\
        !            80:                _XSend(dpy, data, len)
        !            81: 
        !            82: 

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