//设置当前时间轴
 public void setCurrentTimeLine(int id)
 {
     if (currentTimeLineHoder == null)
     {
         return;
     }
     currentTimeLine = currentTimeLineHoder[id];
 }
 public void setHolder(MTimeLineHoder mTimeLineHoderT)
 {
     currentTimeLineHoder = mTimeLineHoderT;
     currentTimeLine = null;
     focusFrame = null;
     if (currentTimeLineHoder != null && timePosition >= currentTimeLineHoder.getMaxFrameLen())
     {
         timePosition = currentTimeLineHoder.getMaxFrameLen() - 1;
     }
     if (timePosition<0)
     {
         timePosition = 0;
     }
     clearFrameFocus();
     form_MA.form_MFrameEdit.releaseFocusClips();
 }
 private void 添加单元ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     if (currentTimeLineHoder != null)
     {
         String name = "图层" + currentTimeLineHoder.Count();
         SmallDialog_WordEdit txtDialog = new SmallDialog_WordEdit("新建图层", name);
         txtDialog.ShowDialog();
         name = txtDialog.getValue();
         form_MA.historyManager.ReadyHistory(HistoryType.Action);
         MTimeLine element = new MTimeLine(currentTimeLineHoder);
         element.name = name;
         currentTimeLineHoder.Add(element);
         form_MA.historyManager.AddHistory(HistoryType.Action);
         this.setCurrentTimeLine(element.GetID());
         scrollRightPosV(element.GetID());
     }
 }