January 2002
Intermediate to advanced
288 pages
5h 48m
English
Content preview from .NET Windows® Forms Custom ControlsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Control-Based Extender Providers
As stated previously, any component can serve as an Extender Provider. All that is necessary is to implement the IExtenderProvider interface, add the necessary ProvideProperty attributes, and implement the Get/Set methods for the property. Creating a control that implements the IExtenderProvider interface is the same as it was for the BorderPainterExtender sample described previously. To demonstrate this, the next Extender Provider will be derived from a Label control. In addition, this new Extender Provider will only extend MenuItems to provide a MenuItemHelpText property. Figure A.3 shows the completed MenuItemExtender displaying some help text for the selected MenuItem.
Figure A.3. A Label control implementing ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.