diff options
Diffstat (limited to 'libX11/src/InitExt.c')
| -rw-r--r-- | libX11/src/InitExt.c | 819 |
1 files changed, 409 insertions, 410 deletions
diff --git a/libX11/src/InitExt.c b/libX11/src/InitExt.c index cb9191de6..8eca3e989 100644 --- a/libX11/src/InitExt.c +++ b/libX11/src/InitExt.c @@ -1,410 +1,409 @@ -/* - -Copyright 1987, 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. - -*/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <X11/Xlibint.h> -#include <X11/Xos.h> -#include <stdio.h> - -/* - * This routine is used to link a extension in so it will be called - * at appropriate times. - */ - -XExtCodes *XInitExtension ( - Display *dpy, - _Xconst char *name) -{ - XExtCodes codes; /* temp. place for extension information. */ - register _XExtension *ext;/* need a place to build it all */ - if (!XQueryExtension(dpy, name, - &codes.major_opcode, &codes.first_event, - &codes.first_error)) return (NULL); - - LockDisplay (dpy); - if (! (ext = (_XExtension *) Xcalloc (1, sizeof (_XExtension))) || - ! (ext->name = Xmalloc((unsigned) strlen(name) + 1))) { - if (ext) Xfree((char *) ext); - UnlockDisplay(dpy); - return (XExtCodes *) NULL; - } - codes.extension = dpy->ext_number++; - ext->codes = codes; - (void) strcpy(ext->name, name); - - /* chain it onto the display list */ - ext->next = dpy->ext_procs; - dpy->ext_procs = ext; - UnlockDisplay (dpy); - - return (&ext->codes); /* tell him which extension */ -} - -XExtCodes *XAddExtension (Display *dpy) -{ - register _XExtension *ext; - - LockDisplay (dpy); - if (! (ext = (_XExtension *) Xcalloc (1, sizeof (_XExtension)))) { - UnlockDisplay(dpy); - return (XExtCodes *) NULL; - } - ext->codes.extension = dpy->ext_number++; - - /* chain it onto the display list */ - ext->next = dpy->ext_procs; - dpy->ext_procs = ext; - UnlockDisplay (dpy); - - return (&ext->codes); /* tell him which extension */ -} - -static _XExtension *XLookupExtension ( - register Display *dpy, /* display */ - register int extension) /* extension number */ -{ - register _XExtension *ext; - for (ext = dpy->ext_procs; ext; ext = ext->next) - if (ext->codes.extension == extension) return (ext); - return (NULL); -} - -XExtData **XEHeadOfExtensionList(XEDataObject object) -{ - return *(XExtData ***)&object; -} - -int -XAddToExtensionList( - XExtData **structure, - XExtData *ext_data) -{ - ext_data->next = *structure; - *structure = ext_data; - return 1; -} - -XExtData *XFindOnExtensionList( - XExtData **structure, - int number) -{ - XExtData *ext; - - ext = *structure; - while (ext && (ext->number != number)) - ext = ext->next; - return ext; -} - -/* - * Routines to hang procs on the extension structure. - */ -CreateGCType XESetCreateGC( - Display *dpy, /* display */ - int extension, /* extension number */ - CreateGCType proc) /* routine to call when GC created */ -{ - register _XExtension *e; /* for lookup of extension */ - register CreateGCType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->create_GC; - e->create_GC = proc; - UnlockDisplay(dpy); - return (CreateGCType)oldproc; -} - -CopyGCType XESetCopyGC( - Display *dpy, /* display */ - int extension, /* extension number */ - CopyGCType proc) /* routine to call when GC copied */ -{ - register _XExtension *e; /* for lookup of extension */ - register CopyGCType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->copy_GC; - e->copy_GC = proc; - UnlockDisplay(dpy); - return (CopyGCType)oldproc; -} - -FlushGCType XESetFlushGC( - Display *dpy, /* display */ - int extension, /* extension number */ - FlushGCType proc) /* routine to call when GC copied */ -{ - register _XExtension *e; /* for lookup of extension */ - register FlushGCType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->flush_GC; - e->flush_GC = proc; - UnlockDisplay(dpy); - return (FlushGCType)oldproc; -} - -FreeGCType XESetFreeGC( - Display *dpy, /* display */ - int extension, /* extension number */ - FreeGCType proc) /* routine to call when GC freed */ -{ - register _XExtension *e; /* for lookup of extension */ - register FreeGCType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->free_GC; - e->free_GC = proc; - UnlockDisplay(dpy); - return (FreeGCType)oldproc; -} - -CreateFontType XESetCreateFont( - Display *dpy, /* display */ - int extension, /* extension number */ - CreateFontType proc) /* routine to call when font created */ -{ - register _XExtension *e; /* for lookup of extension */ - register CreateFontType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->create_Font; - e->create_Font = proc; - UnlockDisplay(dpy); - return (CreateFontType)oldproc; -} - -FreeFontType XESetFreeFont( - Display *dpy, /* display */ - int extension, /* extension number */ - FreeFontType proc) /* routine to call when font freed */ -{ - register _XExtension *e; /* for lookup of extension */ - register FreeFontType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->free_Font; - e->free_Font = proc; - UnlockDisplay(dpy); - return (FreeFontType)oldproc; -} - -CloseDisplayType XESetCloseDisplay( - Display *dpy, /* display */ - int extension, /* extension number */ - CloseDisplayType proc) /* routine to call when display closed */ -{ - register _XExtension *e; /* for lookup of extension */ - register CloseDisplayType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->close_display; - e->close_display = proc; - UnlockDisplay(dpy); - return (CloseDisplayType)oldproc; -} - -typedef Bool (*WireToEventType) ( - Display* /* display */, - XEvent* /* re */, - xEvent* /* event */ -); - -WireToEventType XESetWireToEvent( - Display *dpy, /* display */ - int event_number, /* event routine to replace */ - WireToEventType proc) /* routine to call when converting event */ -{ - register WireToEventType oldproc; - if (proc == NULL) proc = (WireToEventType)_XUnknownWireEvent; - LockDisplay (dpy); - oldproc = dpy->event_vec[event_number]; - dpy->event_vec[event_number] = proc; - UnlockDisplay (dpy); - return (WireToEventType)oldproc; -} - -typedef Bool (*WireToEventCookieType) ( - Display* /* display */, - XGenericEventCookie* /* re */, - xEvent* /* event */ -); - -WireToEventCookieType XESetWireToEventCookie( - Display *dpy, /* display */ - int extension, /* extension major opcode */ - WireToEventCookieType proc /* routine to call for generic events */ - ) -{ - WireToEventCookieType oldproc; - if (proc == NULL) proc = (WireToEventCookieType)_XUnknownWireEventCookie; - LockDisplay (dpy); - oldproc = dpy->generic_event_vec[extension & 0x7F]; - dpy->generic_event_vec[extension & 0x7F] = proc; - UnlockDisplay (dpy); - return (WireToEventCookieType)oldproc; -} - -typedef Bool (*CopyEventCookieType) ( - Display* /* display */, - XGenericEventCookie* /* in */, - XGenericEventCookie* /* out */ -); - -CopyEventCookieType XESetCopyEventCookie( - Display *dpy, /* display */ - int extension, /* extension major opcode */ - CopyEventCookieType proc /* routine to copy generic events */ - ) -{ - CopyEventCookieType oldproc; - if (proc == NULL) proc = (CopyEventCookieType)_XUnknownCopyEventCookie; - LockDisplay (dpy); - oldproc = dpy->generic_event_copy_vec[extension & 0x7F]; - dpy->generic_event_copy_vec[extension & 0x7F] = proc; - UnlockDisplay (dpy); - return (CopyEventCookieType)oldproc; -} - - -typedef Status (*EventToWireType) ( - Display* /* display */, - XEvent* /* re */, - xEvent* /* event */ -); - -EventToWireType XESetEventToWire( - Display *dpy, /* display */ - int event_number, /* event routine to replace */ - EventToWireType proc) /* routine to call when converting event */ -{ - register EventToWireType oldproc; - if (proc == NULL) proc = (EventToWireType) _XUnknownNativeEvent; - LockDisplay (dpy); - oldproc = dpy->wire_vec[event_number]; - dpy->wire_vec[event_number] = proc; - UnlockDisplay(dpy); - return (EventToWireType)oldproc; -} - -typedef Bool (*WireToErrorType) ( - Display* /* display */, - XErrorEvent* /* he */, - xError* /* we */ -); - -WireToErrorType XESetWireToError( - Display *dpy, /* display */ - int error_number, /* error routine to replace */ - WireToErrorType proc) /* routine to call when converting error */ -{ - register WireToErrorType oldproc = NULL; - if (proc == NULL) proc = (WireToErrorType)_XDefaultWireError; - LockDisplay (dpy); - if (!dpy->error_vec) { - int i; - dpy->error_vec = Xmalloc(256 * sizeof(oldproc)); - for (i = 1; i < 256; i++) - dpy->error_vec[i] = _XDefaultWireError; - } - if (dpy->error_vec) { - oldproc = dpy->error_vec[error_number]; - dpy->error_vec[error_number] = proc; - } - UnlockDisplay (dpy); - return (WireToErrorType)oldproc; -} - -ErrorType XESetError( - Display *dpy, /* display */ - int extension, /* extension number */ - ErrorType proc) /* routine to call when X error happens */ -{ - register _XExtension *e; /* for lookup of extension */ - register ErrorType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->error; - e->error = proc; - UnlockDisplay(dpy); - return (ErrorType)oldproc; -} - -ErrorStringType XESetErrorString( - Display *dpy, /* display */ - int extension, /* extension number */ - ErrorStringType proc) /* routine to call when I/O error happens */ -{ - register _XExtension *e; /* for lookup of extension */ - register ErrorStringType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->error_string; - e->error_string = proc; - UnlockDisplay(dpy); - return (ErrorStringType)oldproc; -} - -PrintErrorType XESetPrintErrorValues( - Display *dpy, /* display */ - int extension, /* extension number */ - PrintErrorType proc) /* routine to call to print */ -{ - register _XExtension *e; /* for lookup of extension */ - register PrintErrorType oldproc; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->error_values; - e->error_values = proc; - UnlockDisplay(dpy); - return (PrintErrorType)oldproc; -} - -BeforeFlushType XESetBeforeFlush( - Display *dpy, /* display */ - int extension, /* extension number */ - BeforeFlushType proc) /* routine to call on flush */ -{ - register _XExtension *e; /* for lookup of extension */ - register BeforeFlushType oldproc; - register _XExtension *ext; - if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL); - LockDisplay(dpy); - oldproc = e->before_flush; - e->before_flush = proc; - for (ext = dpy->flushes; ext && ext != e; ext = ext->next) - ; - if (!ext) { - e->next_flush = dpy->flushes; - dpy->flushes = e; - } - UnlockDisplay(dpy); - return (BeforeFlushType)oldproc; -} +/*
+
+Copyright 1987, 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.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xlibint.h>
+#include <X11/Xos.h>
+#include <stdio.h>
+
+/*
+ * This routine is used to link a extension in so it will be called
+ * at appropriate times.
+ */
+
+XExtCodes *XInitExtension (
+ Display *dpy,
+ _Xconst char *name)
+{
+ XExtCodes codes; /* temp. place for extension information. */
+ register _XExtension *ext;/* need a place to build it all */
+ if (!XQueryExtension(dpy, name,
+ &codes.major_opcode, &codes.first_event,
+ &codes.first_error)) return (NULL);
+
+ LockDisplay (dpy);
+ if (! (ext = (_XExtension *) Xcalloc (1, sizeof (_XExtension))) ||
+ ! (ext->name = strdup(name))) {
+ if (ext) Xfree((char *) ext);
+ UnlockDisplay(dpy);
+ return (XExtCodes *) NULL;
+ }
+ codes.extension = dpy->ext_number++;
+ ext->codes = codes;
+
+ /* chain it onto the display list */
+ ext->next = dpy->ext_procs;
+ dpy->ext_procs = ext;
+ UnlockDisplay (dpy);
+
+ return (&ext->codes); /* tell him which extension */
+}
+
+XExtCodes *XAddExtension (Display *dpy)
+{
+ register _XExtension *ext;
+
+ LockDisplay (dpy);
+ if (! (ext = (_XExtension *) Xcalloc (1, sizeof (_XExtension)))) {
+ UnlockDisplay(dpy);
+ return (XExtCodes *) NULL;
+ }
+ ext->codes.extension = dpy->ext_number++;
+
+ /* chain it onto the display list */
+ ext->next = dpy->ext_procs;
+ dpy->ext_procs = ext;
+ UnlockDisplay (dpy);
+
+ return (&ext->codes); /* tell him which extension */
+}
+
+static _XExtension *XLookupExtension (
+ register Display *dpy, /* display */
+ register int extension) /* extension number */
+{
+ register _XExtension *ext;
+ for (ext = dpy->ext_procs; ext; ext = ext->next)
+ if (ext->codes.extension == extension) return (ext);
+ return (NULL);
+}
+
+XExtData **XEHeadOfExtensionList(XEDataObject object)
+{
+ return *(XExtData ***)&object;
+}
+
+int
+XAddToExtensionList(
+ XExtData **structure,
+ XExtData *ext_data)
+{
+ ext_data->next = *structure;
+ *structure = ext_data;
+ return 1;
+}
+
+XExtData *XFindOnExtensionList(
+ XExtData **structure,
+ int number)
+{
+ XExtData *ext;
+
+ ext = *structure;
+ while (ext && (ext->number != number))
+ ext = ext->next;
+ return ext;
+}
+
+/*
+ * Routines to hang procs on the extension structure.
+ */
+CreateGCType XESetCreateGC(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ CreateGCType proc) /* routine to call when GC created */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register CreateGCType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->create_GC;
+ e->create_GC = proc;
+ UnlockDisplay(dpy);
+ return (CreateGCType)oldproc;
+}
+
+CopyGCType XESetCopyGC(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ CopyGCType proc) /* routine to call when GC copied */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register CopyGCType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->copy_GC;
+ e->copy_GC = proc;
+ UnlockDisplay(dpy);
+ return (CopyGCType)oldproc;
+}
+
+FlushGCType XESetFlushGC(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ FlushGCType proc) /* routine to call when GC copied */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register FlushGCType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->flush_GC;
+ e->flush_GC = proc;
+ UnlockDisplay(dpy);
+ return (FlushGCType)oldproc;
+}
+
+FreeGCType XESetFreeGC(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ FreeGCType proc) /* routine to call when GC freed */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register FreeGCType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->free_GC;
+ e->free_GC = proc;
+ UnlockDisplay(dpy);
+ return (FreeGCType)oldproc;
+}
+
+CreateFontType XESetCreateFont(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ CreateFontType proc) /* routine to call when font created */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register CreateFontType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->create_Font;
+ e->create_Font = proc;
+ UnlockDisplay(dpy);
+ return (CreateFontType)oldproc;
+}
+
+FreeFontType XESetFreeFont(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ FreeFontType proc) /* routine to call when font freed */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register FreeFontType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->free_Font;
+ e->free_Font = proc;
+ UnlockDisplay(dpy);
+ return (FreeFontType)oldproc;
+}
+
+CloseDisplayType XESetCloseDisplay(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ CloseDisplayType proc) /* routine to call when display closed */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register CloseDisplayType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->close_display;
+ e->close_display = proc;
+ UnlockDisplay(dpy);
+ return (CloseDisplayType)oldproc;
+}
+
+typedef Bool (*WireToEventType) (
+ Display* /* display */,
+ XEvent* /* re */,
+ xEvent* /* event */
+);
+
+WireToEventType XESetWireToEvent(
+ Display *dpy, /* display */
+ int event_number, /* event routine to replace */
+ WireToEventType proc) /* routine to call when converting event */
+{
+ register WireToEventType oldproc;
+ if (proc == NULL) proc = (WireToEventType)_XUnknownWireEvent;
+ LockDisplay (dpy);
+ oldproc = dpy->event_vec[event_number];
+ dpy->event_vec[event_number] = proc;
+ UnlockDisplay (dpy);
+ return (WireToEventType)oldproc;
+}
+
+typedef Bool (*WireToEventCookieType) (
+ Display* /* display */,
+ XGenericEventCookie* /* re */,
+ xEvent* /* event */
+);
+
+WireToEventCookieType XESetWireToEventCookie(
+ Display *dpy, /* display */
+ int extension, /* extension major opcode */
+ WireToEventCookieType proc /* routine to call for generic events */
+ )
+{
+ WireToEventCookieType oldproc;
+ if (proc == NULL) proc = (WireToEventCookieType)_XUnknownWireEventCookie;
+ LockDisplay (dpy);
+ oldproc = dpy->generic_event_vec[extension & 0x7F];
+ dpy->generic_event_vec[extension & 0x7F] = proc;
+ UnlockDisplay (dpy);
+ return (WireToEventCookieType)oldproc;
+}
+
+typedef Bool (*CopyEventCookieType) (
+ Display* /* display */,
+ XGenericEventCookie* /* in */,
+ XGenericEventCookie* /* out */
+);
+
+CopyEventCookieType XESetCopyEventCookie(
+ Display *dpy, /* display */
+ int extension, /* extension major opcode */
+ CopyEventCookieType proc /* routine to copy generic events */
+ )
+{
+ CopyEventCookieType oldproc;
+ if (proc == NULL) proc = (CopyEventCookieType)_XUnknownCopyEventCookie;
+ LockDisplay (dpy);
+ oldproc = dpy->generic_event_copy_vec[extension & 0x7F];
+ dpy->generic_event_copy_vec[extension & 0x7F] = proc;
+ UnlockDisplay (dpy);
+ return (CopyEventCookieType)oldproc;
+}
+
+
+typedef Status (*EventToWireType) (
+ Display* /* display */,
+ XEvent* /* re */,
+ xEvent* /* event */
+);
+
+EventToWireType XESetEventToWire(
+ Display *dpy, /* display */
+ int event_number, /* event routine to replace */
+ EventToWireType proc) /* routine to call when converting event */
+{
+ register EventToWireType oldproc;
+ if (proc == NULL) proc = (EventToWireType) _XUnknownNativeEvent;
+ LockDisplay (dpy);
+ oldproc = dpy->wire_vec[event_number];
+ dpy->wire_vec[event_number] = proc;
+ UnlockDisplay(dpy);
+ return (EventToWireType)oldproc;
+}
+
+typedef Bool (*WireToErrorType) (
+ Display* /* display */,
+ XErrorEvent* /* he */,
+ xError* /* we */
+);
+
+WireToErrorType XESetWireToError(
+ Display *dpy, /* display */
+ int error_number, /* error routine to replace */
+ WireToErrorType proc) /* routine to call when converting error */
+{
+ register WireToErrorType oldproc = NULL;
+ if (proc == NULL) proc = (WireToErrorType)_XDefaultWireError;
+ LockDisplay (dpy);
+ if (!dpy->error_vec) {
+ int i;
+ dpy->error_vec = Xmalloc(256 * sizeof(oldproc));
+ for (i = 1; i < 256; i++)
+ dpy->error_vec[i] = _XDefaultWireError;
+ }
+ if (dpy->error_vec) {
+ oldproc = dpy->error_vec[error_number];
+ dpy->error_vec[error_number] = proc;
+ }
+ UnlockDisplay (dpy);
+ return (WireToErrorType)oldproc;
+}
+
+ErrorType XESetError(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ ErrorType proc) /* routine to call when X error happens */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register ErrorType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->error;
+ e->error = proc;
+ UnlockDisplay(dpy);
+ return (ErrorType)oldproc;
+}
+
+ErrorStringType XESetErrorString(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ ErrorStringType proc) /* routine to call when I/O error happens */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register ErrorStringType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->error_string;
+ e->error_string = proc;
+ UnlockDisplay(dpy);
+ return (ErrorStringType)oldproc;
+}
+
+PrintErrorType XESetPrintErrorValues(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ PrintErrorType proc) /* routine to call to print */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register PrintErrorType oldproc;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->error_values;
+ e->error_values = proc;
+ UnlockDisplay(dpy);
+ return (PrintErrorType)oldproc;
+}
+
+BeforeFlushType XESetBeforeFlush(
+ Display *dpy, /* display */
+ int extension, /* extension number */
+ BeforeFlushType proc) /* routine to call on flush */
+{
+ register _XExtension *e; /* for lookup of extension */
+ register BeforeFlushType oldproc;
+ register _XExtension *ext;
+ if ((e = XLookupExtension (dpy, extension)) == NULL) return (NULL);
+ LockDisplay(dpy);
+ oldproc = e->before_flush;
+ e->before_flush = proc;
+ for (ext = dpy->flushes; ext && ext != e; ext = ext->next)
+ ;
+ if (!ext) {
+ e->next_flush = dpy->flushes;
+ dpy->flushes = e;
+ }
+ UnlockDisplay(dpy);
+ return (BeforeFlushType)oldproc;
+}
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