richedit禁用输入法的实现

        HIMC  g_hIMC =NULL;       
            richedit_ctrl_->AttachSetFocus([this](ui::EventArgs*){
            g_hIMC = ImmAssociateContext(m_hWnd, NULL);//handle 为要禁用的窗口句柄
            return true; 
        });

          richedit_ctrl_->AttachKillFocus([this](ui::EventArgs*){
            if (g_hIMC)
            {
                ImmAssociateContext(m_hWnd, g_hIMC);//handle 为要启用的窗口句柄 
            }
            return true;
        });