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

1.1       root        1: #include "copyright.h"
                      2: 
                      3: /* $Header: XChProp.c,v 11.12 87/09/11 08:01:37 toddb Exp $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1986  */
                      5: 
                      6: #include "Xlibint.h"
                      7: 
                      8: XChangeProperty (dpy, w, property, type, format, mode, data, nelements)
                      9:     register Display *dpy;
                     10:     Window w;
                     11:     Atom property, type;
                     12:     int format;  /* 8, 16, or 32 */
                     13:     int mode;  /* PropModeReplace, PropModePrepend, PropModeAppend */
                     14:     unsigned char *data;
                     15:     int nelements;
                     16:     {
                     17:     register xChangePropertyReq *req;
                     18:     register long nbytes = nelements;
                     19: 
                     20:     LockDisplay(dpy);
                     21:     GetReq (ChangeProperty, req);
                     22:     req->window = w;
                     23:     req->property = property;
                     24:     req->type = type;
                     25:     req->format = format;
                     26:     req->mode = mode;
                     27:     req->nUnits = nelements;
                     28:     
                     29:     switch (format) {
                     30:       case 8:
                     31:        req->length += (nelements + 3)>>2;
                     32:        Data (dpy, (char *)data, nbytes);
                     33:         break;
                     34:  
                     35:       case 16:
                     36:        req->length += (nelements + 1)>>1;
                     37:        nbytes <<= 1;
                     38:        PackData (dpy, (char *) data, nbytes);
                     39:        break;
                     40: 
                     41:       case 32:
                     42:        req->length += nelements;
                     43:        nbytes <<= 2;
                     44:        Data (dpy, (char *) data, nbytes);
                     45:        break;
                     46: 
                     47:       default:
                     48:         /* XXX this is an error! */ ;
                     49:       }
                     50: 
                     51:     UnlockDisplay(dpy);
                     52:     SyncHandle();
                     53:     }
                     54: 
                     55: 
                     56: 
                     57: 
                     58: 

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