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- XGrabDeviceKey(3X11) X FUNCTIONS XGrabDeviceKey(3X11)
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- NNAAMMEE
- XGrabDeviceKey, XUngrabDeviceKey - grab/ungrab extension
- input device Keys
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- SSYYNNTTAAXX
- XGrabDeviceKey(_d_i_s_p_l_a_y, _d_e_v_i_c_e, _K_e_y, _m_o_d_i_f_i_e_r_s,
- _m_o_d_i_f_i_e_r___d_e_v_i_c_e, _g_r_a_b___w_i_n_d_o_w, _o_w_n_e_r___e_v_e_n_t_s,
- _e_v_e_n_t___c_o_u_n_t, _e_v_e_n_t___l_i_s_t, _t_h_i_s___d_e_v_i_c_e___m_o_d_e,
- _o_t_h_e_r___d_e_v_i_c_e_s___m_o_d_e)
- Display *_d_i_s_p_l_a_y;
- XDevice *_d_e_v_i_c_e;
- unsigned int _K_e_y;
- unsigned int _m_o_d_i_f_i_e_r_s;
- XDevice *_m_o_d_i_f_i_e_r___d_e_v_i_c_e;
- Window _g_r_a_b___w_i_n_d_o_w;
- Bool _o_w_n_e_r___e_v_e_n_t_s;
- unsigned int _e_v_e_n_t___c_o_u_n_t;
- XEventClass _e_v_e_n_t___l_i_s_t;
- int _t_h_i_s___d_e_v_i_c_e___m_o_d_e, _o_t_h_e_r___d_e_v_i_c_e_s___m_o_d_e;
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- XUngrabDeviceKey(_d_i_s_p_l_a_y, _d_e_v_i_c_e, _K_e_y, _m_o_d_i_f_i_e_r_s,
- _m_o_d_i_f_i_e_r___d_e_v_i_c_e, _g_r_a_b___w_i_n_d_o_w)
- Display *_d_i_s_p_l_a_y;
- XDevice *_d_e_v_i_c_e;
- unsigned int _K_e_y;
- unsigned int _m_o_d_i_f_i_e_r_s;
- XDevice *_m_o_d_i_f_i_e_r___d_e_v_i_c_e;
- Window _g_r_a_b___w_i_n_d_o_w;
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- AARRGGUUMMEENNTTSS
- _d_i_s_p_l_a_y Specifies the connection to the X server.
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- _d_e_v_i_c_e Specifies the device that is to be grabbed or
- released
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- _K_e_y Specifies the device Key that is to be grabbed
- or released or _A_n_y_K_e_y.
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- _m_o_d_i_f_i_e_r_s Specifies the set of keymasks or _A_n_y_M_o_d_i_f_i_e_r.
- The mask is the bitwise inclusive OR of the
- valid keymask bits. Valid bits are: Shift-
- Mask, LockMask, ControlMask, Mod1Mask,
- Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask.
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- _m_o_d_i_f_i_e_r___d_e_v_i_c_e
- Specifies the device whose modifiers are to be
- used. If a modifier_device of NULL is speci-
- fied, the X keyboard will be used as the modi-
- fier_device.
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- _g_r_a_b___w_i_n_d_o_w Specifies the grab window.
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- _o_w_n_e_r___e_v_e_n_t_s
- Specifies a Boolean value that indicates
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- X Version 11 Release 6.1 1
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- XGrabDeviceKey(3X11) X FUNCTIONS XGrabDeviceKey(3X11)
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- whether the device events are to be reported
- as usual or reported with respect to the grab
- window if selected by the event list.
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- _e_v_e_n_t___c_o_u_n_t Specifies the number of event classes in the
- event list.
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- _e_v_e_n_t___l_i_s_t Specifies which device events are reported to
- the client.
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- _t_h_i_s___d_e_v_i_c_e___m_o_d_e
- Specifies further processing of events from
- this device. You can pass _G_r_a_b_M_o_d_e_S_y_n_c or
- _G_r_a_b_M_o_d_e_A_s_y_n_c.
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- _o_t_h_e_r___d_e_v_i_c_e_s___m_o_d_e
- Specifies further processing of events from
- other devices. You can pass _G_r_a_b_M_o_d_e_S_y_n_c or
- _G_r_a_b_M_o_d_e_A_s_y_n_c.
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- DDEESSCCRRIIPPTTIIOONN
- The _X_G_r_a_b_D_e_v_i_c_e_K_e_y request establishes a passive grab. In
- the future, the device is actively grabbed (as for _X_G_r_a_b_-
- _D_e_v_i_c_e, the last-device-grab time is set to the time at
- which the Key was pressed (as transmitted in the
- _D_e_v_i_c_e_K_e_y_P_r_e_s_s event), and the _D_e_v_i_c_e_K_e_y_P_r_e_s_s event is
- reported if all of the following conditions are true:
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- +o The device is not grabbed, and the specified key is
- logically pressed when the specified modifier keys
- are logically down, and no other keys or modifier
- keys are logically down.
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- +o The grab_window is an ancestor (or is) the focus win-
- dow OR the grab window is a descendant of the focus
- window and contains the device.
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- +o The confine_to window (if any) is viewable.
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- +o A passive grab on the same key/modifier combination
- does not exist on any ancestor of grab_window.
-
- The interpretation of the remaining arguments is as for
- _X_G_r_a_b_D_e_v_i_c_e . The active grab is terminated automatically
- when the logical state of the device has the specified key
- released.
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- Note that the logical state of a device (as seen by means
- of the X protocol ) may lag the physical state if device
- event processing is frozen.
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- If the key is not _A_n_y_K_e_y, it must be in the range speci-
- fied by min_keycode and max_keycode as returned by the
- _X_L_i_s_t_I_n_p_u_t_D_e_v_i_c_e_s request. Otherwise, a _B_a_d_V_a_l_u_e error
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- X Version 11 Release 6.1 2
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- XGrabDeviceKey(3X11) X FUNCTIONS XGrabDeviceKey(3X11)
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- results.
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- This request overrides all previous grabs by the same
- client on the same Key/modifier combinations on the same
- window. A modifier of _A_n_y_M_o_d_i_f_i_e_r is equivalent to issu-
- ing the grab request for all possible modifier combina-
- tions (including the combination of no modifiers). It is
- not required that all modifiers specified have currently
- assigned KeyCodes. A key of _A_n_y_K_e_y is equivalent to issu-
- ing the request for all possible keys. Otherwise, it is
- not required that the specified key currently be assigned
- to a physical Key.
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- If a modifier_device of NULL is specified, the X keyboard
- will be used as the modifier_device.
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- If some other client has already issued a _X_G_r_a_b_D_e_v_i_c_e_K_e_y
- with the same Key/modifier combination on the same window,
- a _B_a_d_A_c_c_e_s_s error results. When using _A_n_y_M_o_d_i_f_i_e_r or
- _A_n_y_K_e_y , the request fails completely, and a _B_a_d_A_c_c_e_s_s
- error results (no grabs are established) if there is a
- conflicting grab for any combination. _X_G_r_a_b_D_e_v_i_c_e_K_e_y has
- no effect on an active grab.
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- _X_G_r_a_b_D_e_v_i_c_e_K_e_y can generate _B_a_d_A_c_c_e_s_s, _B_a_d_C_l_a_s_s, _B_a_d_D_e_-
- _v_i_c_e, _B_a_d_M_a_t_c_h, _B_a_d_V_a_l_u_e, and _B_a_d_W_i_n_d_o_w errors. It
- returns _S_u_c_c_e_s_s on successful completion of the request.
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- The _X_U_n_g_r_a_b_D_e_v_i_c_e_K_e_y request releases the passive grab for
- a key/modifier combination on the specified window if it
- was grabbed by this client. A modifier of _A_n_y_M_o_d_i_f_i_e_r is
- equivalent to issuing the ungrab request for all possible
- modifier combinations, including the combination of no
- modifiers. A Key of _A_n_y_K_e_y is equivalent to issuing the
- request for all possible Keys. _X_U_n_g_r_a_b_D_e_v_i_c_e_K_e_y has no
- effect on an active grab.
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- If a modifier_device of NULL is specified, the X keyboard
- will be used as the modifier_device.
-
- _X_U_n_g_r_a_b_D_e_v_i_c_e_K_e_y can generate _B_a_d_D_e_v_i_c_e, _B_a_d_M_a_t_c_h, _B_a_d_-
- _V_a_l_u_e and _B_a_d_W_i_n_d_o_w errors.
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- DDIIAAGGNNOOSSTTIICCSS
- _B_a_d_D_e_v_i_c_e An invalid device was specified. The speci-
- fied device does not exist or has not been
- opened by this client via _X_O_p_e_n_I_n_p_u_t_D_e_v_i_c_e.
- This error may also occur if the specified
- device is the X keyboard or X pointer device.
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- _B_a_d_M_a_t_c_h This error may occur if an _X_G_r_a_b_D_e_v_i_c_e_K_e_y
- request was made specifying a device that has
- no keys, or a modifier device that has no
- keys.
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- X Version 11 Release 6.1 3
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- XGrabDeviceKey(3X11) X FUNCTIONS XGrabDeviceKey(3X11)
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- _B_a_d_V_a_l_u_e Some numeric value falls outside the range of
- values accepted by the request. Unless a spe-
- cific 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 this error.
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- _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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- SSEEEE AALLSSOO
- XAllowDeviceEvents(3X),
- XGrabDevice(3X),
- XGrabDeviceButton(3X),
- _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 4
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