XtAppAddActionHook, XtRemoveActionHook - register an action hook procedure
#include <X11/Intrinsic.h>
XtActionHookId XtAppAddActionHook(XtAppContext
app_context, XtActionHookProc proc, XtPointer
client_data);
void XtRemoveActionHook(XtActionHookId id);
- app_context
- Specifies the application context.
- proc
- Specifies the action hook procedure.
- num_args
- Specifies the application-specific data to be passed to the action
hook.
XtAppAddActionHook adds the specified procedure to the front of a list
maintained in the application context. In the future, when an action routine
is about to be invoked for any widget in this application context, either
through the translation manager or via XtCallActionProc, the action
hohok procedures will be called in reverse order of registration jut prior to
invoking the action routine.
Action hook procedures are removed automatically and the
XtActionHookId s destroyed when the application context in which they
were added is destroyed.
XtRemoveActionHook removes the specified action hook
procedure from the list in which it was registered.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface