# Interface ICefKeyboardHandler

Description
Hierarchy
Fields
Methods
Properties

## Unit

uCEFInterfaces

## Declaration

`type ICefKeyboardHandler = interface(ICefBaseRefCounted)`

## Description

Implement this interface to handle events related to keyboard input. The functions of this interface will be called on the UI thread.

UNKNOWN

<see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/cef_keyboard_handler_capi.h">CEF source file: /include/capi/cef_keyboard_handler_capi.h (cef_keyboard_handler_t))

## Hierarchy

- IInterface
- ICefBaseRefCounted
- ICefKeyboardHandler

## Overview

### Methods

| `function OnPreKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out isKeyboardShortcut: Boolean): Boolean;`
| `function OnKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle): Boolean;`
| `procedure RemoveReferences;`

## Description

### Methods

| `function OnPreKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle; out isKeyboardShortcut: Boolean): Boolean;`

Called before a keyboard event is sent to the renderer. |event| contains information about the keyboard event. |os_event| is the operating system event message, if any. Return true (1) if the event was handled or false (0) otherwise. If the event will be handled in on_key_event() as a keyboard shortcut set |is_keyboard_shortcut| to true (1) and return false (0).

###### Attributes

GUID['{0512F4EC-ED88-44C9-90D3-5C6D03D3B146}']

| `function OnKeyEvent(const browser: ICefBrowser; const event: PCefKeyEvent; osEvent: TCefEventHandle): Boolean;`
Called after the renderer and JavaScript in the page has had a chance to handle the event. |event| contains information about the keyboard event. |os_event| is the operating system event message, if any. Return true (1) if the keyboard event was handled or false (0) otherwise.

| `procedure RemoveReferences;`
Custom procedure to clear all references.

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