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Annotation of researchv9/X11/src/X.V11R1/lib/X/XQuTree.c, revision 1.1.1.1

1.1       root        1: #include "copyright.h"
                      2: 
                      3: /* $Header: XQuTree.c,v 11.15 87/09/11 08:06:20 toddb Exp $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1986  */
                      5: 
                      6: #define NEED_REPLIES
                      7: #include "Xlibint.h"
                      8: 
                      9: Status XQueryTree (dpy, w, root, parent, children, nchildren)
                     10:     register Display *dpy;
                     11:     Window w;
                     12:     Window *root;
                     13:     Window *parent;  /* RETURN */
                     14:     Window **children; /* RETURN */
                     15:     unsigned int *nchildren;  /* RETURN */
                     16: {
                     17:     long nbytes;
                     18:     xQueryTreeReply rep;
                     19:     register xResourceReq *req;
                     20: 
                     21:     LockDisplay(dpy);
                     22:     GetResReq(QueryTree, w, req);
                     23:     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
                     24:        UnlockDisplay(dpy);
                     25:        SyncHandle();
                     26:        return (0);
                     27:        }
                     28:     *parent = rep.parent;
                     29:     *root = rep.root;
                     30:     *nchildren = rep.nChildren;
                     31:     *children = (Window *) NULL;
                     32:     if (rep.nChildren != 0) {
                     33:       *children = (Window *) Xmalloc (
                     34:            (unsigned)(nbytes = rep.nChildren * sizeof(Window)));
                     35:       _XRead (dpy, (char *) *children, nbytes);
                     36:     }
                     37:        /* Note: won't work if sizeof(Window) is not 32 bits! */
                     38:     UnlockDisplay(dpy);
                     39:     SyncHandle();
                     40:     return (1);
                     41: }
                     42: 

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