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IABSD.fr/xenocara/lib/libdmx/src/dmx.c
matthieu
- lib/libdmx/src/dmx.c
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/* * Copyright 2002-2004 Red Hat Inc., Durham, North Carolina. * * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation on the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) 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 * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS * 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. */ /* * Authors: * Rickard E. (Rik) Faith <faith@redhat.com> * */ /* THIS IS NOT AN X CONSORTIUM STANDARD */ /** \file * This file implements the client-side part of the DMX protocol. It * can be included in client applications by linking with the libdmx.a * library. */ #include <X11/Xlibint.h> #include <X11/extensions/Xext.h> #define EXTENSION_PROC_ARGS void * #include <X11/extensions/extutil.h> #include <X11/extensions/dmxproto.h> #include <X11/extensions/dmxext.h> static XExtensionInfo dmx_extension_info_data; static XExtensionInfo *dmx_extension_info = &dmx_extension_info_data; static const char *dmx_extension_name = DMX_EXTENSION_NAME; #define DMXCheckExtension(dpy,i,val) \ XextCheckExtension(dpy, i, dmx_extension_name, val) #define DMXSimpleCheckExtension(dpy,i) \ XextSimpleCheckExtension(dpy, i, dmx_extension_name) /***************************************************************************** * * * private utility routines * * * *****************************************************************************/ static int close_display(Display *dpy, XExtCodes *extCodes); static /* const */ XExtensionHooks dmx_extension_hooks = { NULL, /* create_gc */ NULL, /* copy_gc */ NULL, /* flush_gc */ NULL, /* free_gc */ NULL, /* create_font */ NULL, /* free_font */ close_display, /* close_display */ NULL, /* wire_to_event */ NULL, /* event_to_wire */ NULL, /* error */ NULL, /* error_string */ }; static XEXT_GENERATE_FIND_DISPLAY(find_display, dmx_extension_info, (char *)dmx_extension_name, &dmx_extension_hooks, 0, NULL) static XEXT_GENERATE_CLOSE_DISPLAY(close_display, dmx_extension_info) /***************************************************************************** * * * public DMX Extension routines * * * *****************************************************************************/ /** If the server has the DMX extension, the event and error bases will * be placed in \a event_basep and \a error_basep, and True will be * returned. Otherwise, False will be returned. * * Available in DMX Protocol Version 1.0 */ Bool DMXQueryExtension(Display *dpy, int *event_basep, int *error_basep) { XExtDisplayInfo *info = find_display(dpy); if (XextHasExtension(info)) { *event_basep = info->codes->first_event; *error_basep = info->codes->first_error; return True; } else { return False; } } /** If the DMXQueryVersion protocol request returns version information * from the server, \a majorVersion, \a minorVersion, and \a * patchVersion are filled in with the appropriate information and True * is returned. Otherwise, False will be returned. * * Available in DMX Protocol Version 1.0 */ Bool DMXQueryVersion(Display *dpy, int *majorVersion, int *minorVersion, int *patchVersion) { XExtDisplayInfo *info = find_display(dpy); xDMXQueryVersionReply rep; xDMXQueryVersionReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXQueryVersion, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXQueryVersion; if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) { UnlockDisplay(dpy); SyncHandle(); return False; } *majorVersion = rep.majorVersion; *minorVersion = rep.minorVersion; *patchVersion = rep.patchVersion; UnlockDisplay(dpy); SyncHandle(); return True; } /** Flush all pending dmxSync requests in DMX server. * * Available in DMX Protocol Version 1.5 */ Bool DMXSync(Display *dpy) { XExtDisplayInfo *info = find_display(dpy); xDMXSyncReply rep; xDMXSyncReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXSync, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXSync; if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) { UnlockDisplay(dpy); SyncHandle(); return False; } UnlockDisplay(dpy); SyncHandle(); return rep.status == Success ? True : False; } /** The creation of the specified \a window will be forced. * * Available in DMX Protocol Version 1.2 * Reply added in DMX Protocol Version 2.0 */ Bool DMXForceWindowCreation(Display *dpy, Window window) { XExtDisplayInfo *info = find_display(dpy); xDMXForceWindowCreationReq *req; xDMXForceWindowCreationReply rep; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXForceWindowCreation, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXForceWindowCreation; req->window = window; if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) { UnlockDisplay(dpy); SyncHandle(); return False; } UnlockDisplay(dpy); SyncHandle(); return rep.status == Success ? True : False; } /** If the DMXGetScreenCount protocol request returns the screen count, * the value will be placed in \a screen_count, and True will be * returned. Otherwise, False will be returned. * * Available in DMX Protocol Version 1.0 */ Bool DMXGetScreenCount(Display *dpy, int *screen_count) { XExtDisplayInfo *info = find_display(dpy); xDMXGetScreenCountReply rep; xDMXGetScreenCountReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXGetScreenCount, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXGetScreenCount; if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) { UnlockDisplay(dpy); SyncHandle(); return False; } *screen_count = rep.screenCount; UnlockDisplay(dpy); SyncHandle(); return True; } /** If the DMXGetScreenAttributes protocol request returns information * for the specified \a physical_screen, information about the screen * will be placed in \a attr, and True will be returned. Otherwise, * False will be returned. * * Available in DMX Protocol Version 1.0; Modified in Version 2.0 */ Bool DMXGetScreenAttributes(Display *dpy, int physical_screen, DMXScreenAttributes *attr) { XExtDisplayInfo *info = find_display(dpy); xDMXGetScreenAttributesReply rep; xDMXGetScreenAttributesReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXGetScreenAttributes, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXGetScreenAttributes; req->physicalScreen = physical_screen; if (!_XReply(dpy, (xReply *)&rep, (SIZEOF(xDMXGetScreenAttributesReply) - 32) >> 2, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } attr->displayName = Xmalloc(rep.displayNameLength + 1 + 4 /* for pad */); _XReadPad(dpy, attr->displayName, rep.displayNameLength); attr->displayName[rep.displayNameLength] = '\0'; attr->logicalScreen = rep.logicalScreen; attr->screenWindowWidth = rep.screenWindowWidth; attr->screenWindowHeight = rep.screenWindowHeight; attr->screenWindowXoffset = rep.screenWindowXoffset; attr->screenWindowYoffset = rep.screenWindowYoffset; attr->rootWindowWidth = rep.rootWindowWidth; attr->rootWindowHeight = rep.rootWindowHeight; attr->rootWindowXoffset = rep.rootWindowXoffset; attr->rootWindowYoffset = rep.rootWindowYoffset; attr->rootWindowXorigin = rep.rootWindowXorigin; attr->rootWindowYorigin = rep.rootWindowYorigin; UnlockDisplay(dpy); SyncHandle(); return True; } static CARD32 _DMXGetScreenAttribute(int bit, DMXScreenAttributes *attr) { switch (1 << bit) { case DMXScreenWindowWidth: return attr->screenWindowWidth; case DMXScreenWindowHeight: return attr->screenWindowHeight; case DMXScreenWindowXoffset: return attr->screenWindowXoffset; case DMXScreenWindowYoffset: return attr->screenWindowYoffset; case DMXRootWindowWidth: return attr->rootWindowWidth; case DMXRootWindowHeight: return attr->rootWindowHeight; case DMXRootWindowXoffset: return attr->rootWindowXoffset; case DMXRootWindowYoffset: return attr->rootWindowYoffset; case DMXRootWindowXorigin: return attr->rootWindowXorigin; case DMXRootWindowYorigin: return attr->rootWindowYorigin; default: return 0; } } static int _DMXDumpScreenAttributes(Display *dpy, unsigned long mask, DMXScreenAttributes *attr) { int i; unsigned long value_list[32]; unsigned long *value = value_list; int count = 0; for (i = 0; i < 32; i++) { if (mask & (1 << i)) { *value++ = _DMXGetScreenAttribute(i, attr); ++count; } } Data32(dpy, value_list, count * sizeof(CARD32)); return count; } static CARD32 _DMXGetInputAttribute(int bit, DMXInputAttributes *attr) { switch (1 << bit) { case DMXInputType: switch (attr->inputType) { case DMXLocalInputType: return 0; case DMXConsoleInputType: return 1; case DMXBackendInputType: return 2; } return attr->inputType; case DMXInputPhysicalScreen: return attr->physicalScreen; case DMXInputSendsCore: return attr->sendsCore; default: return 0; } } static int _DMXDumpInputAttributes(Display *dpy, unsigned long mask, DMXInputAttributes *attr) { int i; unsigned long value_list[32]; unsigned long *value = value_list; int count = 0; for (i = 0; i < 32; i++) { if (mask & (1 << i)) { *value++ = _DMXGetInputAttribute(i, attr); ++count; } } Data32(dpy, value_list, count * sizeof(CARD32)); return count; } /** Change geometries and positions of the DMX screen and root windows * on the back-end X server. */ int DMXChangeScreensAttributes(Display *dpy, int screen_count, int *screens, int mask_count, unsigned int *masks, DMXScreenAttributes *attrs, /* vector */ int *error_screen) { XExtDisplayInfo *info = find_display(dpy); xDMXChangeScreensAttributesReply rep; xDMXChangeScreensAttributesReq *req; int i; unsigned int mask = 0; CARD32 *screen_list; CARD32 *mask_list; DMXCheckExtension(dpy, info, False); if (screen_count < 1 || mask_count < 1) return DmxBadValue; LockDisplay(dpy); GetReq(DMXChangeScreensAttributes, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXChangeScreensAttributes; req->screenCount = screen_count; req->maskCount = mask_count; req->length += screen_count + mask_count; screen_list = (CARD32 *)Xmalloc(sizeof(*screen_list) * screen_count); for (i = 0; i < screen_count; i++) screen_list[i] = screens[i]; Data32(dpy, screen_list, screen_count * sizeof(CARD32)); Xfree(screen_list); mask_list = (CARD32 *)Xmalloc(sizeof(*mask_list) * mask_count); for (i = 0; i < mask_count; i++) mask_list[i] = masks[i]; Data32(dpy, mask_list, mask_count * sizeof(CARD32)); Xfree(mask_list); for (i = 0; i < screen_count; i++) { if (i < mask_count) mask = masks[i]; req->length += _DMXDumpScreenAttributes(dpy, mask, attrs + i); } if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return DmxBadReply; } if (error_screen) *error_screen = rep.errorScreen; UnlockDisplay(dpy); SyncHandle(); return rep.status; } /** Add a screen. */ Bool DMXAddScreen(Display *dpy, const char *displayName, unsigned int mask, DMXScreenAttributes *attr, int *screen) { XExtDisplayInfo *info = find_display(dpy); xDMXAddScreenReply rep; xDMXAddScreenReq *req; int length; int paddedLength; if (!screen) return False; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXAddScreen, req); length = displayName ? strlen(displayName) : 0; paddedLength = (length + 3) & ~3; req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXAddScreen; req->displayNameLength = length; req->physicalScreen = *screen; req->valueMask = mask; req->length += paddedLength/4; req->length += _DMXDumpScreenAttributes(dpy, mask, attr); if (length) { char *buffer = Xmalloc(paddedLength); memset(buffer, 0, paddedLength); memcpy(buffer, displayName, length); Data32(dpy, buffer, paddedLength); Xfree(buffer); } if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } if (screen) *screen = rep.physicalScreen; UnlockDisplay(dpy); SyncHandle(); return rep.status == Success ? True : False; } /** Remove a screen. */ Bool DMXRemoveScreen(Display *dpy, int screen) { XExtDisplayInfo *info = find_display(dpy); xDMXRemoveScreenReply rep; xDMXRemoveScreenReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXRemoveScreen, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXRemoveScreen; req->physicalScreen = screen; if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } UnlockDisplay(dpy); SyncHandle(); return rep.status == Success ? True : False; } /** If the DMXGetWindowAttributes protocol request returns information * about the specified \a window, the number of screens for which * information is available will be returned in \a screen_count and * information about the first \a available_count of those screens will * be placed in \a inf. Because this call transports a great deal of * information over the wire, please call #DMXGetScreenCount first, and * make sure \a inf is that large. * * Note that if the specified \a window has not yet been mapped when * #DMXGetWindowAttributes is called, then a subsequent XMapWindow call * might be buffered in xlib while requests directly to the back-end X * servers are processed. This race condition can be solved by calling * #DMXSync before talking directly to the back-end X servers. * * Available in DMX Protocol Version 1.0, but not working correctly * until DMX Protocol Version 1.4 */ Bool DMXGetWindowAttributes(Display *dpy, Window window, int *screen_count, int available_count, DMXWindowAttributes *inf) { XExtDisplayInfo *info = find_display(dpy); xDMXGetWindowAttributesReply rep; xDMXGetWindowAttributesReq *req; unsigned long current; CARD32 *screens; /* Must match protocol size */ CARD32 *windows; /* Must match protocol size */ XRectangle *pos; /* Must match protocol size */ XRectangle *vis; /* Must match protocol size */ DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXGetWindowAttributes, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXGetWindowAttributes; req->window = window; if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } /* FIXME: check for NULL? */ screens = Xmalloc(rep.screenCount * sizeof(*screens)); windows = Xmalloc(rep.screenCount * sizeof(*windows)); pos = Xmalloc(rep.screenCount * sizeof(*pos)); vis = Xmalloc(rep.screenCount * sizeof(*vis)); _XRead(dpy, (char *)screens, rep.screenCount * sizeof(*screens)); _XRead(dpy, (char *)windows, rep.screenCount * sizeof(*windows)); _XRead(dpy, (char *)pos, rep.screenCount * sizeof(*pos)); _XRead(dpy, (char *)vis, rep.screenCount * sizeof(*vis)); *screen_count = rep.screenCount; for (current = 0; current < rep.screenCount && current < (unsigned)available_count; current++, inf++) { inf->screen = screens[current]; inf->window = windows[current]; inf->pos = pos[current]; inf->vis = vis[current]; } Xfree(vis); Xfree(pos); Xfree(windows); Xfree(screens); UnlockDisplay(dpy); SyncHandle(); return True; } /** If the DMXGetDesktopAttributes protocol request returns information * correctly, the information will be placed in \a attr, and True will * be returned. Otherwise, False will be returned. * * Available in DMX Protocol Version 2.0 */ Bool DMXGetDesktopAttributes(Display *dpy, DMXDesktopAttributes *attr) { XExtDisplayInfo *info = find_display(dpy); xDMXGetDesktopAttributesReply rep; xDMXGetDesktopAttributesReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXGetDesktopAttributes, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXGetDesktopAttributes; if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } attr->width = rep.width; attr->height = rep.height; attr->shiftX = rep.shiftX; attr->shiftY = rep.shiftY; UnlockDisplay(dpy); SyncHandle(); return True; } static CARD32 _DMXGetDesktopAttribute(int bit, DMXDesktopAttributes *attr) { switch (1 << bit) { case DMXDesktopWidth: return attr->width; case DMXDesktopHeight: return attr->height; case DMXDesktopShiftX: return attr->shiftX; case DMXDesktopShiftY: return attr->shiftY; default: return 0; } } static int _DMXDumpDesktopAttributes(Display *dpy, unsigned long mask, DMXDesktopAttributes *attr) { int i; unsigned long value_list[32]; unsigned long *value = value_list; int count = 0; for (i = 0; i < 32; i++) { if (mask & (1 << i)) { *value++ = _DMXGetDesktopAttribute(i, attr); ++count; } } Data32(dpy, value_list, count * sizeof(CARD32)); return count; } /** Change the global bounding box and origin offset. * * Available in DMX Protocol Version 2.0 */ int DMXChangeDesktopAttributes(Display *dpy, unsigned int mask, DMXDesktopAttributes *attr) { XExtDisplayInfo *info = find_display(dpy); xDMXChangeDesktopAttributesReply rep; xDMXChangeDesktopAttributesReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXChangeDesktopAttributes, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXChangeDesktopAttributes; req->valueMask = mask; req->length +=_DMXDumpDesktopAttributes(dpy, mask, attr); if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return DmxBadReply; } UnlockDisplay(dpy); SyncHandle(); return rep.status; } /** If the DMXGetInputCount protocol request returns the input count, * the value will be placed in \a input_count, and True will be * returned. Otherwise, False will be returned. * * Available in DMX Protocol Version 1.1 */ Bool DMXGetInputCount(Display *dpy, int *input_count) { XExtDisplayInfo *info = find_display(dpy); xDMXGetInputCountReply rep; xDMXGetInputCountReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXGetInputCount, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXGetInputCount; if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) { UnlockDisplay(dpy); SyncHandle(); return False; } *input_count = rep.inputCount; UnlockDisplay(dpy); SyncHandle(); return True; } /** If the DMXGetInputAttributes protocol request returns information * about the input device with the specified \a id, information about * the input device will be placed in \a inf, and True will be returned. * Otherwise, False will be returned. * * Available in DMX Protocol Version 1.1 */ Bool DMXGetInputAttributes(Display *dpy, int id, DMXInputAttributes *inf) { XExtDisplayInfo *info = find_display(dpy); xDMXGetInputAttributesReply rep; xDMXGetInputAttributesReq *req; char *buffer; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXGetInputAttributes, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXGetInputAttributes; req->deviceId = id; if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } switch (rep.inputType) { case 0: inf->inputType = DMXLocalInputType; break; case 1: inf->inputType = DMXConsoleInputType; break; case 2: inf->inputType = DMXBackendInputType; break; } inf->physicalScreen = rep.physicalScreen; inf->physicalId = rep.physicalId; inf->isCore = rep.isCore; inf->sendsCore = rep.sendsCore; inf->detached = rep.detached; buffer = Xmalloc(rep.nameLength + 1 + 4 /* for pad */); _XReadPad(dpy, buffer, rep.nameLength); buffer[rep.nameLength] = '\0'; inf->name = buffer; UnlockDisplay(dpy); SyncHandle(); return True; } /** Add input. */ Bool DMXAddInput(Display *dpy, unsigned int mask, DMXInputAttributes *attr, int *id) { XExtDisplayInfo *info = find_display(dpy); xDMXAddInputReply rep; xDMXAddInputReq *req; int length; int paddedLength; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXAddInput, req); length = attr->name ? strlen(attr->name) : 0; paddedLength = (length + 3) & ~3; req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXAddInput; req->displayNameLength = length; req->valueMask = mask; req->length += paddedLength/4; req->length += _DMXDumpInputAttributes(dpy, mask, attr); if (length) { char *buffer = Xmalloc(paddedLength); memset(buffer, 0, paddedLength); memcpy(buffer, attr->name, paddedLength); Data32(dpy, buffer, paddedLength); Xfree(buffer); } if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } if (id) *id = rep.physicalId; UnlockDisplay(dpy); SyncHandle(); return rep.status == Success ? True : False; } /** Add backend input (a helper function that calls #DMXAddInput). */ Bool DMXAddBackendInput(Display *dpy, int screen, int sendsCore, int *newId) { DMXInputAttributes attr; unsigned int mask = (DMXInputType | DMXInputPhysicalScreen | DMXInputSendsCore); attr.inputType = DMXBackendInputType; attr.physicalScreen = screen; attr.sendsCore = sendsCore; attr.name = NULL; return DMXAddInput(dpy, mask, &attr, newId); } /** Add console input (a helper function that calls #DMXAddInput). */ Bool DMXAddConsoleInput(Display *dpy, const char *name, int sendsCore, int *newId) { DMXInputAttributes attr; unsigned int mask = (DMXInputType | DMXInputSendsCore); attr.inputType = DMXConsoleInputType; attr.physicalScreen = 0; attr.sendsCore = sendsCore; attr.name = name; return DMXAddInput(dpy, mask, &attr, newId); } /** Remove an input. */ Bool DMXRemoveInput(Display *dpy, int id) { XExtDisplayInfo *info = find_display(dpy); xDMXRemoveInputReply rep; xDMXRemoveInputReq *req; DMXCheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(DMXRemoveInput, req); req->reqType = info->codes->major_opcode; req->dmxReqType = X_DMXRemoveInput; req->physicalId = id; if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); return False; } UnlockDisplay(dpy); SyncHandle(); return rep.status == Success ? True : False; }