修改自定义拍照bug

Rs.Controls/CameraTemplate.cs

@@ -274,6 +274,7 @@ namespace Rs.MotionPlat
             bGrabContinue = false;
             if (CustomDefineGrabEvent!=null)
             {
+                bGrab = true;
                 CustomDefineGrabEvent?.Invoke();
                 LoadImage();
             }