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xsetafterfunction(3) [suse man page]

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)

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XConnectionWatchProc(3X)					  XLIB FUNCTIONS					  XConnectionWatchProc(3X)

NAME
XConnectionWatchProc - procedure called when internal connection opens or closes SYNTAX
typedef void (*XConnectionWatchProc)(display, client_data, fd, opening, watch_data) Display *display; XPointer client_data; int fd; Bool opening; XPointer *watch_data; ARGUMENTS
display Specifies the connection to the X server. client_data Specifies the additional client data. fd Specifies the file descriptor. opening Specifies whether the connections is being opened or closed. watch_data Specifies a location for private watch_data. DESCRIPTION
XConnectionWatchProc is registered by XAddConnectionWatch() and is called each time Xlib opens or closed an internal connection for the specified display. 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. 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
XAddConnectionWatch(3X) X Version 11 Release 6 XConnectionWatchProc(3X)
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