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Context-Sensitive PictureBox Controls        
Total Hits: 46  |  Today: 0 Author: Dino Esposito       Rating:  
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Great ideas are timeless. A long time ago in Microsoft Systems Journal Paul DiLascia demonstrated a neat trick to display context-sensitive tooltips floating over pictures. As the user moved the mouse over the picture, the tooltip control updated its text to reflect the name of the pointed figure.
How can a tooltip control be smart enough to support a non-rectangular area that, for example, precisely follows the natural shape of a human figure in a painting? Hot spots in images are nothing new, but you normally define them through common, easy-to-describe shapesórectangles, circles, or perhaps polygons.


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