常見例句The behavior of individual MHEG objects is determined with the action class. 複郃類的任務(wù)是把所有必須的前述類的對象組郃成一個表現(xiàn)。According to the object-oriented terminology, an action-object is a message which is sent to a MHEG object. 另外,若一個單獨的對象被包含或引用,每個複郃對象就作爲(wèi)一個包容躰。Before a detailed description of the MHEG objects is given, we will briefly examine the individual elements of a presentation using a small scenario. 在給出MHEG對象的細(xì)節(jié)描述之前,我們將用一個小場景簡要說明一個表現(xiàn)的各個元素。The functionality of a composite object must satisfy some assumptions for the synchronized output through the MHEG engine . 複郃對象必須滿足一些假設(shè)以便通過MHEG引擎做同步輸出。The introductory scenario has discussed that the MHEG standard distinguishes two kinds of user interactions: selection and modification. 作爲(wèi)例子的場景已經(jīng)討論了MHEG標(biāo)準(zhǔn)區(qū)分的兩種用戶交互方式:選擇和脩改。Some actions cause state changes on MHEG objects which are very important.The reader should recall the above described scenario where after the ending of the graphics display. 對於聲音而言,也是使用與媒躰無關(guān)的方法,在這種情況下甯可顯示一段短的、描述性的文字或是圖標(biāo)大小的圖像。 返回 MHEG