Understanding Content Controls
In Chapter 1, you took a look at the class hierarchy that's at the core of WPF. You also considered the difference between elements (which include everything you'll place in a WPF window) and controls (which are more specialized elements that derive from the System.Windows.Controls.Control class).
In the world of WPF, a control is generally described as an element that can receive focus and accept user input, such as a text box or a button. However, the distinction is sometimes a bit blurry. The ToolTip is considered to be a control because it appears and disappears depending on the user's mouse movements. The Label is considered to be a control because of its support for mnemonics (shortcut keys that transfer ...
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