support _NET_SUPPORTING_WM_CHECK

As documented here: http://standards.freedesktop.org/wm-spec/wm-spec-1.3.html#idm140130317670464

diff --git a/dwm.c b/dwm.c
index f8234ce..7b3c0ab 100644 (file)
--- a/dwm.c
+++ b/dwm.c
@@ -61,7 +61,7 @@ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
 enum { SchemeNorm, SchemeSel, SchemeLast }; /* color schemes */
 enum { NetSupported, NetWMName, NetWMState,
        NetWMFullscreen, NetWMWindowOpacity, NetActiveWindow, NetWMWindowType,
 enum { SchemeNorm, SchemeSel, SchemeLast }; /* color schemes */
 enum { NetSupported, NetWMName, NetWMState,
        NetWMFullscreen, NetWMWindowOpacity, NetActiveWindow, NetWMWindowType,

-       NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
+       NetWMWindowTypeDialog, NetClientList, NetSupportingWMCheck, NetLast }; /* EWMH atoms */

 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */

@@ -1631,6 +1631,7 @@ setup(void) {
        netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
        netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
        netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
        netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
        netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
        netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);

+       netatom[NetSupportingWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);

        /* init cursors */
        cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
        cursor[CurResize] = drw_cur_create(drw, XC_sizing);
        /* init cursors */
        cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
        cursor[CurResize] = drw_cur_create(drw, XC_sizing);

@@ -1906,6 +1907,12 @@ updatebars(void) {
                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
                                          CopyFromParent, DefaultVisual(dpy, screen),
                                          CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
                                          CopyFromParent, DefaultVisual(dpy, screen),
                                          CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);

+               XChangeProperty(dpy, root, netatom[NetSupportingWMCheck], XA_WINDOW, 32,
+                               PropModeReplace, (unsigned char *) &(m->barwin), 1);
+               XChangeProperty(dpy, m->barwin, netatom[NetSupportingWMCheck], XA_WINDOW, 32,
+                               PropModeReplace, (unsigned char *) &(m->barwin), 1);
+               XChangeProperty(dpy, m->barwin, netatom[NetWMName], XA_STRING, 8,
+                               PropModeReplace, (unsigned char *) "dwm", 3);

                XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
                XMapRaised(dpy, m->barwin);
        }
                XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
                XMapRaised(dpy, m->barwin);
        }