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Annotation of researchv9/X11/src/X.V11R1/lib/X/XStBytes.c, revision 1.1

1.1     ! root        1: /* $Header: XStBytes.c,v 11.13 87/09/01 15:06:39 toddb Exp $ */
        !             2: /* Copyright    Massachusetts Institute of Technology    1986  */
        !             3: 
        !             4: #include "Xlibint.h"
        !             5: #include "Xatom.h"
        !             6: 
        !             7: /* insulate predefined atom numbers from cut routines */
        !             8: static Atom n_to_atom[8] = { 
        !             9:        XA_CUT_BUFFER0,
        !            10:        XA_CUT_BUFFER1,
        !            11:        XA_CUT_BUFFER2,
        !            12:        XA_CUT_BUFFER3,
        !            13:        XA_CUT_BUFFER4,
        !            14:        XA_CUT_BUFFER5,
        !            15:        XA_CUT_BUFFER6,
        !            16:        XA_CUT_BUFFER7};
        !            17: 
        !            18: XRotateBuffers (dpy, rotate)
        !            19:     register Display *dpy;
        !            20:     int rotate;
        !            21: {
        !            22:        XRotateWindowProperties(dpy, RootWindow(dpy, 0), n_to_atom, 8, rotate);
        !            23: }
        !            24:     
        !            25: char *XFetchBuffer (dpy, nbytes, buffer)
        !            26:     register Display *dpy;
        !            27:     int *nbytes;
        !            28:     register int buffer;
        !            29: {
        !            30:     Atom actual_type;
        !            31:     int actual_format;
        !            32:     unsigned long nitems;
        !            33:     long leftover;
        !            34:     unsigned char *data;
        !            35:     *nbytes = 0;
        !            36:     if ((buffer < 0) || (buffer > 7)) return (NULL);
        !            37: /* XXX should be (sizeof (maxint) - 1)/4 */
        !            38:     if (XGetWindowProperty(dpy, RootWindow(dpy, 0), n_to_atom[buffer], 
        !            39:        0L, 10000000L, False, XA_STRING, 
        !            40:        &actual_type, &actual_format, &nitems, &leftover, &data) != Success) {
        !            41:        return (NULL);
        !            42:        }
        !            43:     if ( (actual_type == XA_STRING) &&  (actual_format != 32) ) {
        !            44:        *nbytes = nitems;
        !            45:        return((char *)data);
        !            46:        }
        !            47:     if ((char *) data != NULL) Xfree ((char *)data);
        !            48:     return(NULL);
        !            49: }
        !            50: 
        !            51: char *XFetchBytes (dpy, nbytes)
        !            52:     register Display *dpy;
        !            53:     int *nbytes;
        !            54: {
        !            55:     return (XFetchBuffer (dpy, nbytes, 0));
        !            56: }
        !            57: 
        !            58: XStoreBuffer (dpy, bytes, nbytes, buffer)
        !            59:     register Display *dpy;
        !            60:     char bytes[];
        !            61:     int nbytes;
        !            62:     register int buffer;
        !            63: {
        !            64:     if ((buffer < 0) || (buffer > 7)) return;
        !            65:     XChangeProperty(dpy, RootWindow(dpy, 0), n_to_atom[buffer], 
        !            66:        XA_STRING, 8, PropModeReplace, (unsigned char *) bytes, nbytes);
        !            67: }
        !            68: 
        !            69: XStoreBytes (dpy, bytes, nbytes)
        !            70:     register Display *dpy;
        !            71:     char bytes[];
        !            72:     int nbytes;
        !            73: {
        !            74:     XStoreBuffer (dpy, bytes, nbytes, 0);
        !            75: }

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