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</o:shapelayout></xml><![endif]--></head><body lang=HU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>Hi,<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>I am creating a web application that uses openlayers (2.10). In my application I have three component, that is separeted in 3 different layers: object, point, line. I have to handle the following events:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1;text-autospace:none'><![if !supportLists]><span style='font-size:9.5pt;font-family:Consolas'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:9.5pt;font-family:Consolas'>object: <o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>a, popup, when mouse is over<o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>b, select, when clicked<o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>c, multiselect: when ctrl+ box selection<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1;text-autospace:none'><![if !supportLists]><span style='font-size:9.5pt;font-family:Consolas'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:9.5pt;font-family:Consolas'>point:<o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>a, popup, when mouse is over<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1;text-autospace:none'><![if !supportLists]><span style='font-size:9.5pt;font-family:Consolas'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:9.5pt;font-family:Consolas'>line:<o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>no event handling<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>I have created three selectfeatures for this. One for multiselect and two for the rest. Because I need the collection of point in object multiselect I subscribe for document, selectfeature and map event.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>Sometimes, in Visual Studio, I have got nullpointer exception when I close the web application. The exception occures in the following class:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>OpenLayers.Handler.Box=OpenLayer.Class{...} in the following method: <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>deactivate:<span style='color:blue'>function</span>(){<span style='color:blue'>if</span>(OpenLayers.Handler.prototype.deactivate.apply(<span style='color:blue'>this</span>,arguments)){<span style='color:blue'>this</span>.dragHandler.deactivate();<span style='color:blue'>return</span> <span style='color:blue'>true</span>;}<span style='color:blue'>else</span>{<span style='color:blue'>return</span> <span style='color:blue'>false</span>;}}<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>The dragHandler is null, so it is not possible to call the deactivate method (if i am right I haven’t got this exception in version 2.8). Is it a bug or am I use something wrong?<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'>The example can be found in here:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><a href="http://www.inf.u-szeged.hu/~dombijd/openlayers/realdemo.html">http://www.inf.u-szeged.hu/~dombijd/openlayers/realdemo.html</a><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.5pt;font-family:Consolas'><a href="http://www.inf.u-szeged.hu/~dombijd/openlayers/Scripts/realdemo.js">http://www.inf.u-szeged.hu/~dombijd/openlayers/Scripts/realdemo.js</a><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Jozsef Daniel Dombi<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>