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Diffstat (limited to 'src/Keyboard.c')
| -rw-r--r-- | src/Keyboard.c | 854 |
1 files changed, 854 insertions, 0 deletions
diff --git a/src/Keyboard.c b/src/Keyboard.c new file mode 100644 index 0000000..5f1e84e --- /dev/null +++ b/src/Keyboard.c @@ -0,0 +1,854 @@ +/* $Xorg: Keyboard.c,v 1.5 2001/02/09 02:03:55 xorgcvs Exp $ */ + +/******************************************************** + +Copyright 1988 by Hewlett-Packard Company +Copyright 1987, 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts +Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA. + +Permission to use, copy, modify, and distribute this software +and its documentation for any purpose and without fee is hereby +granted, provided that the above copyright notice appear in all +copies and that both that copyright notice and this permission +notice appear in supporting documentation, and that the names of +Hewlett-Packard, Digital, or Sun not be used in advertising or +publicity pertaining to distribution of the software without specific, +written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- +NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI- +ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR +PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH +THE USE OR PERFORMANCE OF THIS SOFTWARE. + +********************************************************/ + +/* + +Copyright 1987, 1988, 1994, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ + +#include "IntrinsicI.h" + +#include "PassivGraI.h" + +#define _GetWindowedAncestor(w) (XtIsWidget(w) ? w : _XtWindowedAncestor(w)) +extern void _XtFillAncestorList(); +extern void _XtSendFocusEvent(); + +/* InActiveSubtree cache of the current focus source and its ancestors */ +static Widget *pathTrace = NULL; +static int pathTraceDepth = 0; +static int pathTraceMax = 0; + +/* FindKeyDestination cache of focus destination and ancestors up to source */ +static Widget *pseudoTrace = NULL; +static int pseudoTraceDepth = 0; +static int pseudoTraceMax = 0; + +void _XtClearAncestorCache(widget) + Widget widget; +{ + /* the caller must lock the process lock */ + if (pathTraceDepth && pathTrace[0] == widget) + pathTraceDepth = 0; +} + +static XtServerGrabPtr CheckServerGrabs(event, trace, traceDepth) + XEvent *event; + Widget *trace; + Cardinal traceDepth; +{ + XtServerGrabPtr grab; + Cardinal i; + + for (i = traceDepth; i > 0; i--) + { + if ((grab = _XtCheckServerGrabsOnWidget(event, trace[i-1], KEYBOARD))) + return (grab); + } + return (XtServerGrabPtr)0; +} + +static Boolean IsParent(a, b) + Widget a, b; +{ + for (b = XtParent(b); b; b = XtParent(b)) { + if (b == a) return TRUE; + if (XtIsShell(b)) return FALSE; + } + return FALSE; +} + +#define RelRtn(lca, type) {*relTypeRtn = type; return lca;} + +static Widget CommonAncestor(a, b, relTypeRtn) + register Widget a, b; + XtGeneology * relTypeRtn; +{ + if (a == b) + { + RelRtn(a, XtMySelf) + } + else if (IsParent(a, b)) + { + RelRtn(a, XtMyAncestor) + } + else if (IsParent(b, a)) + { + RelRtn(b, XtMyDescendant) + } + else + for (b = XtParent(b); + b && !XtIsShell(b); + b = XtParent(b)) + if (IsParent(b, a)) + { + RelRtn(b, XtMyCousin) + } + RelRtn(NULL, XtUnrelated) +} +#undef RelRtn + + + + + +static Widget _FindFocusWidget(widget, trace, traceDepth, activeCheck, isTarget) + Widget widget; + Widget *trace; + int traceDepth; + Boolean activeCheck; + Boolean *isTarget; +{ + int src; + Widget dst; + XtPerWidgetInput pwi = NULL; + + /* For each ancestor, starting at the top, see if it's forwarded */ + + + /* first check the trace list till done or we go to branch */ + for (src = traceDepth-1, dst = widget; src > 0;) + { + if ((pwi = _XtGetPerWidgetInput(trace[src], FALSE))) + { + if (pwi->focusKid) + { + dst = pwi->focusKid; + for (src--; src > 0 && trace[src] != dst; src--) {} + } + else dst = trace[--src]; + } + else dst = trace[--src]; + } + + if (isTarget) { + if (pwi && pwi->focusKid == widget) + *isTarget = TRUE; + else + *isTarget = FALSE; + } + + if (!activeCheck) + while (XtIsWidget(dst) + && (pwi = _XtGetPerWidgetInput(dst, FALSE)) + && pwi->focusKid) + dst = pwi->focusKid; + + return dst; +} + + +static Widget FindFocusWidget(widget, pdi) + Widget widget; + XtPerDisplayInput pdi; +{ + if (pdi->focusWidget) + return pdi->focusWidget; + else + return _FindFocusWidget(widget, pdi->trace, pdi->traceDepth, FALSE, NULL); +} + +Widget XtGetKeyboardFocusWidget(widget) + Widget widget; +{ + XtPerDisplayInput pdi; + Widget retval; + WIDGET_TO_APPCON(widget); + + LOCK_APP(app); + pdi = _XtGetPerDisplayInput(XtDisplay(widget)); + retval = FindFocusWidget(widget, pdi); + UNLOCK_APP(app); + return retval; +} + +static Boolean IsOutside(e, w) + XKeyEvent *e; + Widget w; +{ + Position left, right, top, bottom; + + /* + * if the pointer is outside the shell or inside + * the window try to see if it would recieve the + * focus + */ + XtTranslateCoords(w, 0, 0, &left, &top); + /* We need to take borders into consideration */ + left = left - w->core.border_width; + top = top - w->core.border_width; + right = left + w->core.width + w->core.border_width; + bottom = top + w->core.height + w->core.border_width; + + if ( + (e->x_root < left) || (e->y_root < top) || + (e->x_root > right) || (e->y_root > bottom)) + return TRUE; + else + return FALSE; +} + +static Widget FindKeyDestination(widget, event, + prevGrab, prevGrabType, + devGrab, devGrabType, + pdi) + Widget widget; + XKeyEvent *event; + XtServerGrabPtr prevGrab; + XtServerGrabType prevGrabType; + XtServerGrabPtr devGrab; + XtServerGrabType devGrabType; + XtPerDisplayInput pdi; +{ + + Widget dspWidget; + Widget focusWidget; + + LOCK_PROCESS; + dspWidget = + focusWidget = + pdi->focusWidget = + _GetWindowedAncestor(FindFocusWidget(widget, pdi)); + + + /* + * If a grab is active from a previous activation then dispatch + * based on owner_events ala protocol but with focus being + * determined by XtSetKeyboardFocus. + */ + if (IsAnyGrab(prevGrabType)) + { + if (prevGrab->ownerEvents) + dspWidget = focusWidget; + else + dspWidget = prevGrab->widget; + } + else + { + /* + * If the focus widget is the event widget or a descendant + * then we can avoid the rest of this. Else ugh... + */ + if (focusWidget != widget) + { + XtGeneology ewRelFw; /* relationship of event widget to + focusWidget */ + Widget lca; + + lca = CommonAncestor(widget, focusWidget, &ewRelFw); + + /* + * if the event widget is an ancestor of focus due to the pointer + * and/or the grab being in an ancestor and it's a passive grab + * send to grab widget. + * we are also dispatching to widget if ownerEvents and the event + * is outside the client + */ + if ((ewRelFw == XtMyAncestor) && + (devGrabType == XtPassiveServerGrab)) + { + if (IsOutside(event, widget) || + event->type ==KeyPress + ) + dspWidget = devGrab->widget; + } + else + { + /* + * if the grab widget is not an ancestor of the focus + * release the grab in order to avoid locking. There + * is a possible case in that ownerEvents true will fall + * through and if synch is set and the event widget + * could turn it off we'll lock. check for it ? why not + */ + if ((ewRelFw != XtMyAncestor) + && (devGrabType == XtPassiveServerGrab) + && (!IsAnyGrab(prevGrabType)) + ) + { + XtUngrabKeyboard(devGrab->widget, + event->time); + devGrabType = XtNoServerGrab; + } + /* + * if there isn't a grab with then check + * for a logical grab that would have been activated + * if the server was using Xt focus instead of server + * focus + */ + if ( + (event->type != KeyPress) || + (event->keycode == 0) /* Xlib XIM composed input */ + ) + dspWidget = focusWidget; + else + { + XtServerGrabPtr grab; + + if (!pseudoTraceDepth || + !(focusWidget == pseudoTrace[0]) || + !(lca == pseudoTrace[pseudoTraceDepth])) + { + /* + * fill ancestor list from lca + * (non-inclusive)to focusWidget by + * passing in lca as breakWidget + */ + _XtFillAncestorList(&pseudoTrace, + &pseudoTraceMax, + &pseudoTraceDepth, + focusWidget, + lca); + /* ignore lca */ + pseudoTraceDepth--; + } + if ((grab = CheckServerGrabs((XEvent*)event, + pseudoTrace, + pseudoTraceDepth))) + { + XtDevice device = &pdi->keyboard; + + device->grabType = XtPseudoPassiveServerGrab; + pdi->activatingKey = event->keycode; + device->grab = *grab; + + if (grab + ) + dspWidget = grab->widget; + else + dspWidget = focusWidget; + } + } + } + } + } + UNLOCK_PROCESS; + return dspWidget; +} + +Widget _XtProcessKeyboardEvent(event, widget, pdi) + XKeyEvent *event; + Widget widget; + XtPerDisplayInput pdi; +{ + XtDevice device = &pdi->keyboard; + XtServerGrabPtr newGrab, devGrab = &device->grab; + XtServerGrabRec prevGrabRec; + XtServerGrabType prevGrabType = device->grabType; + Widget dspWidget = NULL; + Boolean deactivateGrab = FALSE; + + prevGrabRec = *devGrab; + + switch (event->type) + { + case KeyPress: + { + if (event->keycode != 0 && /* Xlib XIM composed input */ + !IsServerGrab(device->grabType) && + (newGrab = CheckServerGrabs((XEvent*)event, + pdi->trace, + pdi->traceDepth))) + { + /* + * honor pseudo-grab from prior event by X + * unlocking keyboard. Not Xt Unlock ! + */ + if (IsPseudoGrab(prevGrabType)) + XUngrabKeyboard(XtDisplay(newGrab->widget), + event->time); + else + { + /* Activate the grab */ + device->grab = *newGrab; + pdi->activatingKey = event->keycode; + device->grabType = XtPassiveServerGrab; + } + } + } + break; + + case KeyRelease: + { + if (IsEitherPassiveGrab(device->grabType) && + (event->keycode == pdi->activatingKey)) + deactivateGrab = TRUE; + } + break; + } + dspWidget = FindKeyDestination(widget, event, + &prevGrabRec, prevGrabType, + devGrab, device->grabType, + pdi); + if (deactivateGrab) + { + /* Deactivate the grab */ + device->grabType = XtNoServerGrab; + pdi->activatingKey = 0; + } + return dspWidget; +} + +static Widget GetShell(widget) + Widget widget; +{ + Widget shell; + + for (shell = widget; + shell && !XtIsShell(shell); + shell = XtParent(shell)){} + return shell; +} + + +/* + * Check that widget really has Xt focus due to it having recieved an + * event + */ +typedef enum {NotActive = 0, IsActive, IsTarget} ActiveType; +static ActiveType InActiveSubtree(widget) + Widget widget; +{ + Boolean isTarget; + ActiveType retval; + + LOCK_PROCESS; + if (!pathTraceDepth || widget != pathTrace[0]) { + _XtFillAncestorList(&pathTrace, + &pathTraceMax, + &pathTraceDepth, + widget, + NULL); + } + if (widget == _FindFocusWidget(widget, + pathTrace, + pathTraceDepth, + TRUE, + &isTarget)) + retval = (isTarget ? IsTarget : IsActive); + else + retval = NotActive; + UNLOCK_PROCESS; + return retval; +} + + + + +/* ARGSUSED */ +void _XtHandleFocus(widget, client_data, event, cont) + Widget widget; + XtPointer client_data; /* child who wants focus */ + XEvent *event; + Boolean *cont; /* unused */ +{ + XtPerDisplayInput pdi = _XtGetPerDisplayInput(XtDisplay(widget)); + XtPerWidgetInput pwi = (XtPerWidgetInput)client_data; + XtGeneology oldFocalPoint = pwi->focalPoint; + XtGeneology newFocalPoint = pwi->focalPoint; + + switch( event->type ) { + + case KeyPress: + case KeyRelease: + /* + * We're getting the keyevents used to guarantee propagating + * child interest ala ForwardEvent in R3 + */ + return; + + case EnterNotify: + case LeaveNotify: + + /* + * If operating in a focus driven model, then enter and + * leave events do not affect the keyboard focus. + */ + if ((event->xcrossing.detail != NotifyInferior) + && (event->xcrossing.focus)) + { + switch (oldFocalPoint) + { + case XtMyAncestor: + if (event->type == LeaveNotify) + newFocalPoint = XtUnrelated; + break; + case XtUnrelated: + if (event->type == EnterNotify) + newFocalPoint = XtMyAncestor; + break; + case XtMySelf: + break; + case XtMyDescendant: + break; + + } + } + break; + case FocusIn: + switch (event->xfocus.detail) + { + case NotifyNonlinear: + case NotifyAncestor: + case NotifyInferior: + newFocalPoint = XtMySelf; + break; + case NotifyNonlinearVirtual: + case NotifyVirtual: + newFocalPoint = XtMyDescendant; + break; + case NotifyPointer: + newFocalPoint = XtMyAncestor; + break; + } + break; + case FocusOut: + switch (event->xfocus.detail) + { + case NotifyPointer: + case NotifyNonlinear: + case NotifyAncestor: + case NotifyNonlinearVirtual: + case NotifyVirtual: + newFocalPoint = XtUnrelated; + break; + case NotifyInferior: + newFocalPoint = XtMyDescendant; + return; + break; + } + break; + } + + if (newFocalPoint != oldFocalPoint) + { + Boolean add; + Widget descendant = pwi->focusKid; + + pwi->focalPoint = newFocalPoint; + + if ((oldFocalPoint == XtUnrelated) && + InActiveSubtree(widget) != NotActive) + { + pdi->focusWidget = NULL; /* invalidate the cache */ + pwi->haveFocus = TRUE; + add = TRUE; + } + else if (newFocalPoint == XtUnrelated) + { + pdi->focusWidget = NULL; /* invalidate the cache */ + pwi->haveFocus = FALSE; + add = FALSE; + } + else + return; + + if (descendant) + { + if (add) + { + _XtSendFocusEvent(descendant, FocusIn); + } + else + { + _XtSendFocusEvent(descendant, FocusOut); + } + } + } +} + + +static void AddFocusHandler(widget, descendant, pwi, psi, pdi, oldEventMask) + Widget widget, descendant; + XtPerWidgetInput pwi; + XtPerWidgetInput psi; + XtPerDisplayInput pdi; + EventMask oldEventMask; +{ + EventMask eventMask, targetEventMask; + Widget target; + + /* + * widget must now select for key events if the descendant is + * interested in them. + * + * shell borders are not occluded by the child, they're occluded + * by reparenting window managers. !!! + */ + target = descendant ? _GetWindowedAncestor(descendant) : NULL; + targetEventMask = XtBuildEventMask(target); + eventMask = targetEventMask & (KeyPressMask | KeyReleaseMask); + eventMask |= FocusChangeMask | EnterWindowMask | LeaveWindowMask; + + if (oldEventMask) { + oldEventMask &= KeyPressMask | KeyReleaseMask; + oldEventMask |= FocusChangeMask | EnterWindowMask | LeaveWindowMask; + + if (oldEventMask != eventMask) + XtRemoveEventHandler(widget, (oldEventMask & ~eventMask), + False, _XtHandleFocus, (XtPointer)pwi); + } + + if (oldEventMask != eventMask) + XtAddEventHandler(widget, eventMask, False, + _XtHandleFocus, (XtPointer)pwi); + + /* What follows is too much grief to go through if the + * target doesn't actually care about focus change events, + * so just invalidate the focus cache & refill it when + * the next input event actually arrives. + */ + + if (!(targetEventMask & FocusChangeMask)) { + pdi->focusWidget = NULL; + return; + } + + if (XtIsRealized(widget) && !pwi->haveFocus) { + if (psi->haveFocus) { + Window root, child; + int root_x, root_y, win_x, win_y; + int left, right, top, bottom; + unsigned int modMask; + ActiveType act; + + /* + * If the shell has the focus but the source widget + * doesn't, it may only be because the source widget + * wasn't previously tracking focus or crossing events. + * If the target wants focus events, we have to + * now determine whether the source has the focus. + */ + + if ((act = InActiveSubtree(widget)) == IsTarget) + pwi->haveFocus = TRUE; + else if (act == IsActive) { + /* + * An ancestor contains the focus, so if source + * contains the pointer, then source has the focus. + */ + + if (XQueryPointer(XtDisplay(widget), XtWindow(widget), + &root, &child, + &root_x, &root_y, &win_x, &win_y, &modMask)) + { + /* We need to take borders into consideration */ + left = top = -((int) widget->core.border_width); + right = (int) (widget->core.width + (widget->core.border_width << 1)); + bottom = (int) (widget->core.height + (widget->core.border_width << 1)); + + if (win_x >= left && win_x < right && + win_y >= top && win_y < bottom) + pwi->haveFocus = TRUE; + } + } + } + } + if (pwi->haveFocus) { + pdi->focusWidget = NULL; /* invalidate the cache */ + _XtSendFocusEvent(target, FocusIn); + } +} + + +/* ARGSUSED */ +static void QueryEventMask(widget, client_data, event, cont) + Widget widget; /* child who gets focus */ + XtPointer client_data; /* ancestor giving it */ + XEvent *event; + Boolean *cont; /* unused */ +{ + /* widget was once the target of an XtSetKeyboardFocus but + * was unrealized at the time. Make sure ancestor still wants + * focus set here then install the handler now that we know the + * complete event mask. + */ + Widget ancestor = (Widget)client_data; + XtPerWidgetInput pwi = _XtGetPerWidgetInput(ancestor, FALSE); + Widget target = pwi->queryEventDescendant; + + /* use of 'target' is non-standard hackery; allows focus to non-widget */ + if (pwi && (pwi->focusKid == target)) { + AddFocusHandler(ancestor, target, pwi, + _XtGetPerWidgetInput(GetShell(ancestor), TRUE), + _XtGetPerDisplayInput(XtDisplay(ancestor)), + (EventMask)0); + } + XtRemoveEventHandler(widget, XtAllEvents, True, + QueryEventMask, client_data); + pwi->map_handler_added = FALSE; +} + + +/* ARGSUSED */ +static void FocusDestroyCallback(widget, closure, call_data) + Widget widget; + XtPointer closure; /* Widget */ + XtPointer call_data; +{ + XtSetKeyboardFocus((Widget)closure, None); +} + +void XtSetKeyboardFocus(widget, descendant) + Widget widget; + Widget descendant; +{ + XtPerDisplayInput pdi; + XtPerWidgetInput pwi; + Widget oldDesc, oldTarget, target, hookobj; + WIDGET_TO_APPCON(widget); + + LOCK_APP(app); + LOCK_PROCESS; + pdi = _XtGetPerDisplayInput(XtDisplay(widget)); + pwi = _XtGetPerWidgetInput(widget, TRUE); + oldDesc = pwi->focusKid; + + if (descendant == widget) descendant = (Widget)None; + + target = descendant ? _GetWindowedAncestor(descendant) : NULL; + oldTarget = oldDesc ? _GetWindowedAncestor(oldDesc) : NULL; + + if (descendant != oldDesc) { + + /* update the forward path */ + pwi->focusKid = descendant; + + + /* all the rest handles focus ins and focus outs and misc gunk */ + + if (oldDesc) { + /* invalidate FindKeyDestination's ancestor list */ + if (pseudoTraceDepth && oldTarget == pseudoTrace[0]) + pseudoTraceDepth = 0; + + XtRemoveCallback(oldDesc, XtNdestroyCallback, + FocusDestroyCallback, (XtPointer)widget); + + if (!oldTarget->core.being_destroyed) { + if (pwi->map_handler_added) { + XtRemoveEventHandler(oldTarget, XtAllEvents, True, + QueryEventMask, (XtPointer)widget); + pwi->map_handler_added = FALSE; + } + if (pwi->haveFocus) { + _XtSendFocusEvent( oldTarget, FocusOut); + } + } + else if (pwi->map_handler_added) { + pwi->map_handler_added = FALSE; + } + + if (pwi->haveFocus) + pdi->focusWidget = NULL; /* invalidate cache */ + + /* + * If there was a forward path then remove the handler if + * the path is being set to null and it isn't a shell. + * shells always have a handler for tracking focus for the + * hierarchy. + * + * Keep the pwi record on the assumption that the client + * will continue to dynamically assign focus for this widget. + */ + if (!XtIsShell(widget) && !descendant) { + XtRemoveEventHandler(widget, XtAllEvents, True, + _XtHandleFocus, (XtPointer)pwi); + pwi->haveFocus = FALSE; + } + } + + if (descendant) { + Widget shell = GetShell(widget); + XtPerWidgetInput psi = _XtGetPerWidgetInput(shell, TRUE); + XtAddCallback (descendant, XtNdestroyCallback, + FocusDestroyCallback, (XtPointer) widget); + + AddFocusHandler(widget, descendant, pwi, psi, pdi, + oldTarget ? XtBuildEventMask(oldTarget) : 0); + + if (widget != shell) + XtAddEventHandler( + shell, + FocusChangeMask | EnterWindowMask | LeaveWindowMask, + False, + _XtHandleFocus, + (XtPointer)psi + ); + + if (! XtIsRealized(target)) { + XtAddEventHandler(target, (EventMask)StructureNotifyMask, + False, QueryEventMask, (XtPointer)widget); + pwi->map_handler_added = TRUE; + pwi->queryEventDescendant = descendant; + } + } + } + hookobj = XtHooksOfDisplay(XtDisplay(widget)); + if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { + XtChangeHookDataRec call_data; + + call_data.type = XtHsetKeyboardFocus; + call_data.widget = widget; + call_data.event_data = (XtPointer) descendant; + XtCallCallbackList(hookobj, + ((HookObject)hookobj)->hooks.changehook_callbacks, + (XtPointer)&call_data); + } + UNLOCK_PROCESS; + UNLOCK_APP(app); +} |