XSynchronize(3) XLIB FUNCTIONS XSynchronize(3)NAME
XSynchronize, XSetAfterFunction - enable or disable synchronization
SYNTAX
int (*XSynchronize(Display *display, Bool onoff))();
int (*XSetAfterFunction(Display *display, int (*procedure)()))();
ARGUMENTS
display Specifies the connection to the X server.
procedure Specifies the procedure to be called.
onoff Specifies a Boolean value that indicates whether to enable or disable synchronization.
DESCRIPTION
The XSynchronize function returns the previous after function. If onoff is True, XSynchronize turns on synchronous behavior. If onoff is
False, XSynchronize turns off synchronous behavior.
The specified procedure is called with only a display pointer. XSetAfterFunction returns the previous after function.
SEE ALSO XSetErrorHandler(3)
Xlib - C Language X Interface
X Version 11 libX11 1.3.2 XSynchronize(3)
Check Out this Related Man Page
XAddConnectionWatch(3X) XLIB FUNCTIONS XAddConnectionWatch(3X)NAME
XAddConnectionWatch - handle Xlib internal connections
SYNTAX
Status XAddConnectionWatch(display, procedure, client_data)
Display *display;
XConnectionWatchProc procedure;
XPointer client_data;
ARGUMENTS
display Specifies the connection to the X server.
procedure Specifies the procedure to be called.
client_data
Specifies the additional client data.
DESCRIPTION
The XAddConnectionWatch function registers a procedure to be called each time Xlib opens or closes an internal connection for the specified
display. The procedure is passed the display, the specified client_data, the file descriptor for the connection, a Boolean indicating
whether the connection is being opened or closed, and a pointer to a location for private watch data. If opening is True, the procedure
can store a pointer to private data in the location pointed to by watch_data; when the procedure is later called for this same connection
and opening is False, the location pointed to by watch_data will hold this same private data pointer.
This function can be called at any time after a display is opened. If internal connections already exist, the registered procedure will
immediately be called for each of them, before XAddConnectionWatch returns. XAddConnectionWatch returns a nonzero status if the procedure
is successfully registered; otherwise, it returns zero.
The registered procedure should not call any Xlib functions. If the procedure directly or indirectly causes the state of internal connec-
tions or watch procedures to change, the result is not defined. If Xlib has been initialized for threads, the procedure is called with the
display locked and the result of a call by the procedure to any Xlib function that locks the display is not defined unless the executing
thread has externally locked the display using XLockDisplay.
SEE ALSO XConnectionWatchProc(3X), XRemoveConnectionWatch(3X), XProcessInternalConnection(3X), XInternalConnectionNumbers(3X)X Version 11 Release 6 XAddConnectionWatch(3X)
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