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POHow do I get the KeyDown event to fire in a custom container control?
 

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  1. POHow do I get the KeyDown event to fire in a custom container control?
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    <p>I have a custom container control (deriving from <code>FlowLayoutPanel</code>) which contains zero or more child controls dragged there by the user. When a child control is clicked, it is "selected." (It is drawn with a colored border and options are available for altering its properties.)</p> <p>I would like to handle the <code>Delete</code> key so that, if the user is currently working in the container control (clicked within the control or on a child control, for instance) the currently selected control (if there is one) is deleted.</p> <p>I already have the delete functionality working using a right-click context menu on the child items. My problem is handling the <code>Delete</code> key. I cannot figure out how to get the KeyDown event to raise within my container control. I know it has something to do with focus, so that <code>Control.Select()</code> (or its equivalent) must be called, but what is the best way to go about this? Where does this focus logic reside? Or is there a better way?</p> <p>I do not want to handle the <code>KeyDown</code> event in the form and then sniff out where the focus is. This is a reuseable container control and I want the logic to reside there.</p> <p>What do I have to do to get the <code>KeyDown</code> event to fire on a custom control?</p> <pre><code>public class MyContainer : FlowLayoutPanel { protected override void OnKeyDown(KeyEventArgs e) { if (e.KeyCode == Keys.Delete) { MessageBox.Show("How do I get here?"); e.Handled = true; } base.OnKeyDown(e); } } </code></pre>
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