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.NET Forum / Windows Forms / WinForm Controls / January 2006Hotspots in graphic
I have an image that I would like to put in a Windows form. Similar to http://www.wesolve-it.com/graphics/chassis.htm The user should be able to click a part of the chassis and get custom information about that part. Two questions. What is the best way to draw that image on the screen? What is the best way to test for a hit on a certain part? Do I use an image and create some kind of hot spot? Do I use the GDI to draw the lines that represent that image? I want to create a business object "Chassis" and I wanted to have that object communicate with the presentation layer. Maybe to draw itself or at least respond to a request for information about a certain part. Thanks in advance If you create an overlay graphic wth different colors then coded to the machine parts then that would be a possible solution. You could also use a single hit test color and divide the imagine up into multiple layers -- ie each part. That would be more extendable. I'd also consider using an embedded HTML viewer and HTML or possibly even Flash. http://www.ghostclip.com The Premier Help System For Developers If you create an overlay graphic wth different colors then coded to the machine parts then that would be a possible solution. You could also use a single hit test color and divide the imagine up into multiple layers -- ie each part. That would be more extendable. I'd also consider using an embedded HTML viewer and HTML or possibly even Flash. Curtis http://www.ghostclip.com The Premier Help System For Developers I would not use flash for that. There is a product commonly used for these types of applications. Each component would be a graphical object and they take care of hit testing and mouse events. http://www.vgdotnet.com Regards, Frank Hileman >I have an image that I would like to put in a Windows form. Similar to > http://www.wesolve-it.com/graphics/chassis.htm [quoted text clipped - 16 lines] > > Thanks in advance I've done this in the past using a bitmap upon which I placed blocks of a specific colour for each link. You can get the mouse position from an image displayed in a PictureBox and see what the colour is in the link-image using GetPixel. Using a simple table you can determine which colour corresponds to which link  SignatureBob Powell [MVP] Visual C#, System.Drawing Ramuseco Limited .NET consulting http://www.ramuseco.com Find great Windows Forms articles in Windows Forms Tips and Tricks http://www.bobpowell.net/tipstricks.htm Answer those GDI+ questions with the GDI+ FAQ http://www.bobpowell.net/faqmain.htm All new articles provide code in C# and VB.NET. Subscribe to the RSS feeds provided and never miss a new article. >I have an image that I would like to put in a Windows form. Similar to > http://www.wesolve-it.com/graphics/chassis.htm [quoted text clipped - 16 lines] > > Thanks in advance I've done this in the past using a bitmap upon which I placed blocks of a specific colour for each link. You can get the mouse position from an image displayed in a PictureBox and see what the colour is in the link-image using GetPixel. Using a simple table you can determine which colour corresponds to which link SignatureBob Powell [MVP] Visual C#, System.Drawing Ramuseco Limited .NET consulting http://www.ramuseco.com Find great Windows Forms articles in Windows Forms Tips and Tricks http://www.bobpowell.net/tipstricks.htm Answer those GDI+ questions with the GDI+ FAQ http://www.bobpowell.net/faqmain.htm All new articles provide code in C# and VB.NET. Subscribe to the RSS feeds provided and never miss a new article. >I have an image that I would like to put in a Windows form. Similar to > http://www.wesolve-it.com/graphics/chassis.htm [quoted text clipped - 16 lines] > > Thanks in advance Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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