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- query or change the dont-propagate-list for extension devices
XChangeDeviceDontPropagateList(Display *display, Window
- *window, int *count,
XEventClass *event_list, int mode);
- XEventClass *XGetDeviceDontPropagateList(Display
- *window, int *count);
XChangeDeviceDontPropagateList request modifies the list of events that
should not be propagated to ancestors of the event window. This request
allows extension events to be added to or deleted from that list. By default,
all events are propagated to ancestor windows. Once modified, the list remains
modified for the life of the window. Events are not removed from the list
because the client that added them has terminated.
- Specifies the
connection to the X server.
- Specifies the window whose dont-propagate-list
is to be queried or modified.
- Specifies a pointer to a list of
- Specifies the mode. You can pass AddToList , or DeleteFromList.
- Specifies the number of event classes in the list.
Suppression of event
propagation is not allowed for all input extension events. If a specified
event class is one that cannot be suppressed, a BadClass error will result.
Events that can be suppressed include DeviceKeyPress, DeviceKeyRelease,
DeviceButtonPress, DeviceButtonRelease, DeviceMotionNotify, ProximityIn,
XChangeDeviceDontPropagateList can generate a BadDevice,
BadClass, or BadValue error.
The XGetDeviceDontPropagateList request queries
the list of events that should not be propagated to ancestors of the event
XGetDeviceDontPropagateList can generate a BadClass or BadWindow
- An invalid device was specified. The specified
device does not exist or has not been opened by this client via XOpenInputDevice.
This error may also occur if some other client has caused the specified
device to become the X keyboard or X pointer device via the XChangeKeyboardDevice
or XChangePointerDevice requests.
- Some numeric value falls outside
the range of values accepted by the request. Unless a specific range is
specified for an argument, the full range defined by the argument's type
is accepted. Any argument defined as a set of alternatives can generate
- An invalid window id was specified.
- An invalid
event class was specified.
Programming With Xlib
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