Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

xtbuildeventmask(3) [centos man page]

XtBuildEventMask(3)						   XT FUNCTIONS 					       XtBuildEventMask(3)

NAME
XtBuildEventMask - retrieve a widget's event mask SYNTAX
EventMask XtBuildEventMask(Widget w); ARGUMENTS
w Specifies the widget. DESCRIPTION
The XtBuildEventMask function returns the event mask representing the logical OR of all event masks for event handlers registered on the widget with XtAddEventHandler and all event translations, including accelerators, installed on the widget. This is the same event mask stored into the XSetWindowAttributes structure by XtRealizeWidget and sent to the server when event handlers and translations are installed or removed on the realized widget. SEE ALSO
XtAddEventHandler(3) X Toolkit Intrinsics - C Language Interface Xlib - C Language X Interface X Version 11 libXt 1.1.4 XtBuildEventMask(3)

Check Out this Related Man Page

XtAddEventHandler(3)						   XT FUNCTIONS 					      XtAddEventHandler(3)

NAME
XtAddEventHandler, XtAddRawEventHandler, XtRemoveEventHandler, XtRemoveRawEventHandler, XtInsertEventHandler, XtInsertRawEventHandler - add and remove event handlers SYNTAX
void XtAddEventHandler(Widget w, EventMask event_mask, Boolean nonmaskable, XtEventHandler proc, XtPointer client_data); void XtAddRawEventHandler(Widget w, EventMask event_mask, Boolean nonmaskable, XtEventHandler proc, XtPointer client_data); void XtRemoveEventHandler(Widget w, EventMask event_mask, Boolean nonmaskable, XtEventHandler proc, XtPointer client_data); void XtRemoveRawEventHandler(Widget w, EventMask event_mask, Boolean nonmaskable, XtEventHandler proc, XtPointer client_data); void XtInsertEventHandler(Widget w, EventMask event_mask, Boolean nonmaskable, XtEventHandler proc, XtPointer client_data, XtListPosition position); void XtInsertRawEventHandler(Widget w, EventMask event_mask, Boolean nonmaskable, XtEventHandler proc, XtPointer client_data, XtListPosi- tion position); typedef enum { XtListHead, XtListTail } XtListPosition; ARGUMENTS
client_data Specifies additional data to be passed to the client's event handler. event_mask Specifies the event mask for which to call or unregister this procedure. nonmaskable Specifies a Boolean value that indicates whether this procedure should be called or removed on the nonmaskable events (Graphic- sExpose, NoExpose, SelectionClear, SelectionRequest, SelectionNotify, ClientMessage, and MappingNotify). proc Specifies the procedure that is to be added or removed. w Specifies the widget for which this event handler is being registered. position Specifies when the event handler is to be called relative to other previously registered handlers. DESCRIPTION
The XtAddEventHandler function registers a procedure with the dispatch mechanism that is to be called when an event that matches the mask occurs on the specified widget. If the procedure is already registered with the same client_data, the specified mask is ORed into the existing mask. If the widget is realized, XtAddEventHandler calls XSelectInput, if necessary. The XtAddRawEventHandler function is similar to XtAddEventHandler except that it does not affect the widget's mask and never causes an XSe- lectInput for its events. Note that the widget might already have those mask bits set because of other nonraw event handlers registered on it. The XtRemoveRawEventHandler function stops the specified procedure from receiving the specified events. Because the procedure is a raw event handler, this does not affect the widget's mask and never causes a call on XSelectInput. XtInsertEventHandler is identical to XtAddEventHandler with the additional position argument. if position is XtListHead, the event handler is registered to that it will be called before any event handlers that were previously registered for the same widget. If position is XtListTail, the event handler is registered to be called after any previously registered event handlers. If the procedure is already regis- tered with the same client_data value, the specified mask augments the existing mask and the procedure is repositioned in the list. XtInsertRawEventHandler is similar to XtInsertEventHandler except that it does not modify the widget's event mask and never causes an XSe- lectInput for the specified events. If the procedure is already registered with the same client_data value, the specified mask augments the existing mask and the procedure is repositioned in the list. SEE ALSO
XtAppNextEvent(3), XtBuildEventMask(3) X Toolkit Intrinsics - C Language Interface Xlib - C Language X Interface X Version 11 libXt 1.1.3 XtAddEventHandler(3)
Man Page

Featured Tech Videos