Struct xcb::ffi::xproto::xcb_grab_button_request_t

#[repr(C)]
pub struct xcb_grab_button_request_t {
    pub major_opcode: u8,
    pub owner_events: u8,
    pub length: u16,
    pub grab_window: xcb_window_t,
    pub event_mask: u16,
    pub pointer_mode: u8,
    pub keyboard_mode: u8,
    pub confine_to: xcb_window_t,
    pub cursor: xcb_cursor_t,
    pub button: u8,
    pub pad0: u8,
    pub modifiers: u16,
}

Grab pointer button(s)

This request establishes a passive grab. The pointer is actively grabbed as described in GrabPointer, the last-pointer-grab time is set to the time at which the button was pressed (as transmitted in the ButtonPress event), and the ButtonPress event is reported if all of the following conditions are true:

The pointer is not grabbed and the specified button is logically pressed when the specified modifier keys are logically down, and no other buttons or modifier keys are logically down.

The grab-window contains the pointer.

The confine-to window (if any) is viewable.

A passive grab on the same button/key combination does not exist on any ancestor of grab-window.

The interpretation of the remaining arguments is the same as for GrabPointer. The active grab is terminated automatically when the logical state of the pointer has all buttons released, independent of the logical state of modifier keys. Note that the logical state of a device (as seen by means of the protocol) may lag the physical state if device event processing is frozen. This request overrides all previous passive grabs by the same client on the same button/key combinations on the same window. A modifier of AnyModifier is equivalent to issuing the request for all possible modifier combinations (including the combination of no modifiers). It is not required that all specified modifiers have currently assigned keycodes. A button of AnyButton is equivalent to issuing the request for all possible buttons. Otherwise, it is not required that the button specified currently be assigned to a physical button.

An Access error is generated if some other client has already issued a GrabButton request with the same button/key combination on the same window. When using AnyModifier or AnyButton, the request fails completely (no grabs are established), and an Access error is generated if there is a conflicting grab for any combination. The request has no effect on an active grab.

Fields

major_opcode: u8

owner_events: u8

If 1, the grab_window will still get the pointer events. If 0, events are not reported to the grab_window.

length: u16

grab_window: xcb_window_t

Specifies the window on which the pointer should be grabbed.

event_mask: u16

Specifies which pointer events are reported to the client.

TODO: which values?

pointer_mode: u8

keyboard_mode: u8

confine_to: xcb_window_t

Specifies the window to confine the pointer in (the user will not be able to move the pointer out of that window).

The special value XCB_NONE means don't confine the pointer.

cursor: xcb_cursor_t

Specifies the cursor that should be displayed or XCB_NONE to not change the cursor.

button: u8

pad0: u8

modifiers: u16

The modifiers to grab.

Using the special value XCB_MOD_MASK_ANY means grab the pointer with all possible modifier combinations.

Trait Implementations

impl Clone for xcb_grab_button_request_t

fn clone(&self) -> xcb_grab_button_request_t

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for xcb_grab_button_request_t