Thank you for the questions.
We do not have RadPictureBox, but you can use the standard one.
We do not have a build-in RadCheckedListBox as well, but you can easily create such based on the existing RadListBox. Please refer to the following Knowledge Base article which demonstrates how you can create checkbox items in RadComboBox: Implementing checkbox items in RadComboBox
. The customization that is required for RadListBox is similar since RadComboBox actually uses RadListBox in its dropdown and RadComboBoxItem derives from RadListBoxItem.
In addition, you can use our RadGridView as a listbox with checkboxes. The required implementation is demonstrated in this Knowledge Base article
As to your last question, you can subscribe to the ValueChanged event which is fired when you check/uncheck a checkbox in RadGridView.
I hope this helps. If you have additional questions, feel free to contact me.
the Telerik team