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- XSelectExtensionEvent(3X11)X FUNCTIONSXSelectExtensionEvent(3X11)
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- NNAAMMEE
- XSelectExtensionEvent, XGetSelectedExtensionEvents -
- select extension events, get the list of currently
- selected extension events
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- SSYYNNTTAAXX
- XSelectExtensionEvent(_d_i_s_p_l_a_y, _w, _e_v_e_n_t___l_i_s_t, _e_v_e_n_t___c_o_u_n_t)
- Display *_d_i_s_p_l_a_y;
- Window _w;
- XEventClass *_e_v_e_n_t___l_i_s_t;
- int _e_v_e_n_t___c_o_u_n_t;
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- XGetSelectedExtensionEvents(_d_i_s_p_l_a_y, _w,
- _t_h_i_s___c_l_i_e_n_t___e_v_e_n_t___c_o_u_n_t___r_e_t_u_r_n,
- _t_h_i_s___c_l_i_e_n_t___e_v_e_n_t___l_i_s_t___r_e_t_u_r_n,
- _a_l_l___c_l_i_e_n_t_s___e_v_e_n_t___c_o_u_n_t___r_e_t_u_r_n,
- _a_l_l___c_l_i_e_n_t_s___e_v_e_n_t___l_i_s_t___r_e_t_u_r_n)
- Display *_d_i_s_p_l_a_y;
- Window _w;
- int _t_h_i_s___c_l_i_e_n_t___e_v_e_n_t___c_o_u_n_t___r_e_t_u_r_n;
- XEventClass *_t_h_i_s___c_l_i_e_n_t___e_v_e_n_t___l_i_s_t___r_e_t_u_r_n;
- int _a_l_l___c_l_i_e_n_t_s___e_v_e_n_t___c_o_u_n_t___r_e_t_u_r_n;
- XEventClass *_a_l_l___c_l_i_e_n_t_s___e_v_e_n_t___l_i_s_t___r_e_t_u_r_n;
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- AARRGGUUMMEENNTTSS
- _d_i_s_p_l_a_y Specifies the connection to the X server.
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- _w Specifies the window whose events you are
- interested in.
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- _e_v_e_n_t___l_i_s_t Specifies the list of event classes that
- describe the events you are interested in.
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- _e_v_e_n_t___c_o_u_n_t Specifies the count of event classes in the
- event list.
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- _t_h_i_s___c_l_i_e_n_t___e_v_e_n_t___c_o_u_n_t___r_e_t_u_r_n
- Returns the count of event classes selected by
- this client.
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- _t_h_i_s___c_l_i_e_n_t___e_v_e_n_t___l_i_s_t___r_e_t_u_r_n
- Returns a pointer to the list of event classes
- selected by this client.
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- _a_l_l___c_l_i_e_n_t_s___e_v_e_n_t___c_o_u_n_t___r_e_t_u_r_n
- Returns the count of event classes selected by
- all clients.
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- _a_l_l___c_l_i_e_n_t_s___e_v_e_n_t___l_i_s_t___r_e_t_u_r_n
- Returns a pointer to the list of event classes
- selected by all clients.
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- DDEESSCCRRIIPPTTIIOONN
- The _X_S_e_l_e_c_t_E_x_t_e_n_s_i_o_n_E_v_e_n_t request causes the X server to
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- X Version 11 Release 6.1 1
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- XSelectExtensionEvent(3X11)X FUNCTIONSXSelectExtensionEvent(3X11)
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- report the events associated with the specified list of
- event classes. Initially, X will not report any of these
- events. Events are reported relative to a window. If a
- window is not interested in a device event, it usually
- propagates to the closest ancestor that is interested,
- unless the do_not_propagate mask prohibits it.
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- Multiple clients can select for the same events on the
- same window with the following restrictions:
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- +o Multiple clients can select events on the same window
- because their event masks are disjoint. When the X
- server generates an event, it reports it to all
- interested clients.
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- +o Only one client at a time can select a _D_e_v_i_c_e_B_u_t_t_o_n_-
- _P_r_e_s_s event with automatic passive grabbing enabled,
- which is associated with the event class _D_e_v_i_c_e_B_u_t_-
- _t_o_n_P_r_e_s_s_G_r_a_b. To receive _D_e_v_i_c_e_B_u_t_t_o_n_P_r_e_s_s events
- without automatic passive grabbing, use event class
- _D_e_v_i_c_e_B_u_t_t_o_n_P_r_e_s_s but do not specify event class
- _D_e_v_i_c_e_B_u_t_t_o_n_P_r_e_s_s_G_r_a_b.
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- The server reports the event to all interested clients.
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- Information contained in the _X_D_e_v_i_c_e structure returned by
- _X_O_p_e_n_D_e_v_i_c_e is used by macros to obtain the event classes
- that clients use in making _X_S_e_l_e_c_t_E_x_t_e_n_s_i_o_n_E_v_e_n_t requests.
- Currently defined macros include _D_e_v_i_c_e_K_e_y_P_r_e_s_s,
- _D_e_v_i_c_e_K_e_y_R_e_l_e_a_s_e, _D_e_v_i_c_e_B_u_t_t_o_n_P_r_e_s_s, _D_e_v_i_c_e_B_u_t_t_o_n_R_e_l_e_s_e,
- _D_e_v_i_c_e_M_o_t_i_o_n_N_o_t_i_f_y, _D_e_v_i_c_e_F_o_c_u_s_I_n, _D_e_v_i_c_e_F_o_c_u_s_O_u_t, _P_r_o_x_i_m_-
- _i_t_y_I_n, _P_r_o_x_i_m_i_t_y_O_u_t, _D_e_v_i_c_e_S_t_a_t_e_N_o_t_i_f_y, _D_e_v_i_c_e_M_a_p_p_i_i_n_g_N_o_-
- _t_i_f_y, _C_h_a_n_g_e_D_e_v_i_c_e_N_o_t_i_f_y, _D_e_v_i_c_e_P_o_i_n_t_e_r_M_o_t_i_o_n_H_i_n_t, _D_e_v_i_c_e_-
- _B_u_t_t_o_n_1_M_o_t_i_o_n, _D_e_v_i_c_e_B_u_t_t_o_n_2_M_o_t_i_o_n, _D_e_v_i_c_e_B_u_t_t_o_n_3_M_o_t_i_o_n,
- _D_e_v_i_c_e_B_u_t_t_o_n_4_M_o_t_i_o_n, _D_e_v_i_c_e_B_u_t_t_o_n_5_M_o_t_i_o_n, _D_e_v_i_c_e_B_u_t_t_o_n_M_o_-
- _t_i_o_n, _D_e_v_i_c_e_O_w_n_e_r_G_r_a_b_B_u_t_t_o_n, _D_e_v_i_c_e_B_u_t_t_o_n_P_r_e_s_s_G_r_a_b, and
- _N_o_E_x_t_e_n_s_i_o_n_E_v_e_n_t.
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- To obtain the proper event class for a particular device,
- one of the above macros is invoked using the _X_D_e_v_i_c_e
- structure for that device. For example,
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- DeviceKeyPress (*device, type, eventclass);
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- returns the _D_e_v_i_c_e_K_e_y_P_r_e_s_s event type and the eventclass
- for selecting _D_e_v_i_c_e_K_e_y_P_r_e_s_s events from this device.
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- _X_S_e_l_e_c_t_E_x_t_e_n_s_i_o_n_E_v_e_n_t can generate a _B_a_d_W_i_n_d_o_w or _B_a_d_C_l_a_s_s
- error. The _X_G_e_t_S_e_l_e_c_t_e_d_E_x_t_e_n_s_i_o_n_E_v_e_n_t_s request reports
- the extension events selected by this client and all
- clients for the specified window. This request returns
- pointers to two _X_E_v_e_n_t_C_l_a_s_s arrays. One lists the input
- extension events selected by this client from the speci-
- fied window. The other lists the event classes selected
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- X Version 11 Release 6.1 2
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- XSelectExtensionEvent(3X11)X FUNCTIONSXSelectExtensionEvent(3X11)
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- by all clients from the specified window. You should use
- _X_F_r_e_e to free these two arrays.
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- _X_G_e_t_S_e_l_e_c_t_e_d_E_x_t_e_n_s_i_o_n_E_v_e_n_t_s can generate a _B_a_d_W_i_n_d_o_w
- error.
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- DDIIAAGGNNOOSSTTIICCSS
- _B_a_d_W_i_n_d_o_w A value for a Window argument does not name a
- defined Window.
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- _B_a_d_C_l_a_s_s A value for an XEventClass argument is
- invalid.
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- SSEEEE AALLSSOO
- _P_r_o_g_r_a_m_m_i_n_g _w_i_t_h _X_l_i_b
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- X Version 11 Release 6.1 3
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