Exemplo n.º 1
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="msg"></param>
        /// <param name="group"></param>
        /// <param name="nCmdID"></param>
        /// <returns></returns>
        /// <remarks>
        /// Main Accelerator Keys Supported by MsHtml
        /// Accelerator |  Description
        /// Ctrl-N | Opens the current HTML document in a new WebBrowser window.
        /// Crtl-P | Displays a Print dialog box for printing the HTML document.
        /// Ctrl-A | Selects the entire contents of the HTML document.
        /// Crtl-F | Displays a Find dialog box for searching the HTML document.
        /// F5, Ctrl-F5 | Refreshes the currently loaded HTML document.
        /// </remarks>
        public int TranslateAccelerator(Interop.COMMSG msg, ref Guid group, int nCmdID)
        {
            const int WM_KEYDOWN = 0x0100;
            const int VK_CONTROL = 0x11;

            if (msg == null)
            {
                throw new ArgumentNullException("msg");
            }

            if (msg.message != WM_KEYDOWN)
            {
                return(Interop.S_FALSE);                                        // no keydown, allow message
            }
            Keys keyData = Keys.None;

            if (Interop.GetAsyncKeyState(VK_CONTROL) < 0)
            {
                keyData |= Keys.Control;                                                // Ctrl key pressed
            }
            int key = msg.wParam.ToInt32();

            key     &= 0xFF;         // get the virtual keycode
            keyData |= (Keys)key;

            KeyEventArgs kea = new KeyEventArgs(keyData);

            hostControl.RaiseOnTranslateAccelerator(kea);

            if (kea.Handled)
            {
                return(Interop.S_OK);
            }

            // not handled, allow everything else
            return(Interop.S_FALSE);
        }