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-rw-r--r--Documentation/guides/application-developer.rst10
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/guides/application-developer.rst b/Documentation/guides/application-developer.rst
index 41a7d883..cafb24b1 100644
--- a/Documentation/guides/application-developer.rst
+++ b/Documentation/guides/application-developer.rst
@@ -109,10 +109,18 @@ the Camera Manager reports as available to applications.
Camera devices are stored by the CameraManager in a list accessible by index, or
can be retrieved by name through the ``CameraManager::get()`` function. The
code below retrieves the name of the first available camera and gets the camera
-by name from the Camera Manager.
+by name from the Camera Manager, after making sure that at least one camera is
+available.
.. code:: cpp
+ if (cm->cameras().empty()) {
+ std::cout << "No cameras were identified on the system."
+ << std::endl;
+ cm->stop();
+ return EXIT_FAILURE;
+ }
+
std::string cameraId = cm->cameras()[0]->id();
camera = cm->get(cameraId);