zhao：优化录制保存，保存时禁止录屏以避免冲突。

XHWK.WKTool/XHMicroLessonSystemWindow.xaml.cs

                             {
                                 BtnRecord.IsEnabled = false;
                                 btnStop.IsEnabled = false;
+                                btnScreenRecording.IsEnabled = false;
                             });
                         }))).Start();
                         #endregion
                                     MessageWindow.Show("录制失败," + ErrMessage);
                                     BtnRecord.IsEnabled = true;
                                     btnStop.IsEnabled = true;
+                                    btnScreenRecording.IsEnabled = true;
                                     TxbRecordingWord.Text = "录制";
                                     txbType.Text = "";
                                 });
                             {
                                 BtnRecord.IsEnabled = true;
                                 btnStop.IsEnabled = true;
+                                btnScreenRecording.IsEnabled = true; 
                                 TxbRecordingWord.Text = "录制";
                                 txbType.Text = "";
                             });
 
                         BtnRecord.IsEnabled = true;
                         btnStop.IsEnabled = true;
+                        btnScreenRecording.IsEnabled = true;
                         TxbRecordingWord.Text = "录制";
                         txbType.Text = "";
                         MessageWindow.Show("录制时间过短，请重新录制！");