/// <summary> /// 开始预览视频(同时只能打开一个相机) /// </summary> /// <param name="cameraName"></param> public bool StartPreview(string cameraName) { try { bool retVal = false; XCamera cam = XCamera.GetInstance(); if (cam.IsActive()) { if (cam.RunMode != emDSRunMode.RUNMODE_STOP) { cam.Stop(); } cam.UnInit(); } _cameraCallbackProc = new XCamera.DelegateProc(SnapThreadCallback); //test if (cam.Init(_cameraCallbackProc, cameraName, _imageBox.Handle)) //if (cam.Init(_cameraCallbackProc, cameraName, _imageBack.Handle)) { if (cam.Play()) { retVal = true; //this.RealSize(); this.FitScreen(); PublishCameraOpenedEvent(new EventArgs()); } } else { retVal = false; } return(retVal); } catch (System.Exception ex) { _logger.Error(ex.Message); return(false); } }