private void 影片帧编辑区ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     影片帧编辑区ToolStripMenuItem.Checked = !影片帧编辑区ToolStripMenuItem.Checked;
     if (影片帧编辑区ToolStripMenuItem.Checked)
     {
         form_MFrameEdit.Show(panel_DockPanel);
     }
     else
     {
         form_MFrameEdit.Hide();
     }
 }