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/* mwmborder.c */


/*
 * This function shows how to remove the border, title bar, resize button,
 * etc from a Motif window frame from inside an Xlib-based application.
 *
 * Brian Paul  19 Sep 1995   brianp@ssec.wisc.edu
 *
 * This code is in the public domain.
 */


#include <X11/Xlib.h>
#include <X11/Xatom.h>

#define HAVE_MOTIF
#ifdef HAVE_MOTIF

#include <X11/Xm/MwmUtil.h>

#else

/* bit definitions for MwmHints.flags */
#define MWM_HINTS_FUNCTIONS     (1L << 0)
#define MWM_HINTS_DECORATIONS   (1L << 1)
#define MWM_HINTS_INPUT_MODE    (1L << 2)
#define MWM_HINTS_STATUS        (1L << 3)

/* bit definitions for MwmHints.decorations */
#define MWM_DECOR_ALL           (1L << 0)
#define MWM_DECOR_BORDER        (1L << 1)
#define MWM_DECOR_RESIZEH       (1L << 2)
#define MWM_DECOR_TITLE         (1L << 3)
#define MWM_DECOR_MENU          (1L << 4)
#define MWM_DECOR_MINIMIZE      (1L << 5)
#define MWM_DECOR_MAXIMIZE      (1L << 6)

typedef struct
{
    unsigned long       flags;
    unsigned long       functions;
    unsigned long       decorations;
    long                inputMode;
    unsigned long       status;
} PropMotifWmHints;

#define PROP_MOTIF_WM_HINTS_ELEMENTS    5

#endif



/*
 * Specify which Motif window manager border decorations to put on a
 * top-level window.  For example, you can specify that a window is not
 * resizabe, or omit the titlebar, or completely remove all decorations.
 * Input:  dpy - the X display
 *         w - the X window
 *         flags - bitwise-OR of the MWM_DECOR_xxx symbols in X11/Xm/MwmUtil.h
 *                 indicating what decoration elements to enable.  Zero would
 *                 be no decoration.
 */
void set_mwm_border( Display *dpy, Window w, unsigned long flags )
{
   PropMotifWmHints motif_hints;
   Atom prop, proptype;

   /* setup the property */
   motif_hints.flags = MWM_HINTS_DECORATIONS;
   motif_hints.decorations = flags;

   /* get the atom for the property */
   prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
   if (!prop) {
      /* something went wrong! */
      return;
   }

   /* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
   proptype = prop;

   XChangeProperty( dpy, w,                         /* display, window */
                    prop, proptype,                 /* property, type */
                    32,                             /* format: 32-bit datums */
                    PropModeReplace,                /* mode */
                    (unsigned char *) &motif_hints, /* data */
                    PROP_MOTIF_WM_HINTS_ELEMENTS    /* nelements */
                  );
}