[mapguide-users] Tooltip on MapGuide Web API

Wed May 27 03:45:03 EDT 2009

I've tried those overloads

mapGuideMap = new MgMap(this.mapGuideSiteCnn);
mapGuideMap.Create(mapResourceIdentifier, "testMap");
mapGuideMap.Open("testMap");
//this throws an excepcion ""

Source of open session and connect with MapGuide Server, It's something
wrong?
MapGuideApi.MgInitializeWebTier(mgeIniFile);

//Set connection credentials
userInfo = new MgUserInformation(userName, userPassword);

//Connect to MapGuide site
mapGuideSite = new MgSite();
mapGuideSiteInfo = new MgSiteInfo(mapGuideServer, mapGuideServerSitePort,
mapGuideServerClientPort, mapGuideServerAdminPort);
mapGuideSite.Open(userInfo, mapGuideSiteInfo);

//Create new session an set to user
sessionId = mapGuideSite.CreateSession();
userInfo.SetMgSessionId(sessionId);

//Open connection for user
mapGuideSiteCnn = new MgSiteConnection();
mapGuideSiteCnn.Open(userInfo);

Jackie Ng wrote:
> 
> If you use the MgMap(MgSiteConnection) constructor, you should (must?) use
> these overloads:
> 
> Create(MgResourceIdentifier, string)
> Open(string)
> Save()
> 
> See the gory details here:
> http://trac.osgeo.org/mapguide/wiki/MapGuideRfc9
> 
> - Jackie
> 
> 
> gatopardo wrote:
>> 
>> USING OPEN METHOD
>> mapGuideMap = new MgMap(this.mapGuideSiteCnn);
>> mapGuideMap.Open(this.MapGuideResourceService,mapResourceIdentifier);
>> //render map
>> byteReader = mapGuideRenderingService.RenderMap(mapGuideMap, selection,
>> mgEnvelope, width, height, new MgColor(backColor), "PNG", true);
>> 
>> mapGuideMap.Save(mapGuideResourceService);
>> //this doesn't throw any exception, but GetDisplayHeight/GetDisplayWidth
>> returns 0
>> 
>> //If i use this other overload
>> mapGuideMap.Save(mapGuideResourceService,new
>> MgResourceIdentifier(resourceId));
>> //this throws "An exception occurred in the XML parser" exception
>> 
>> USING CREATE METHOD
>> mapGuideMap = new MgMap(this.mapGuideSiteCnn);
>> mapGuideMap.Create(mapGuideResourceService, mapResourceIdentifier,
>> "testMap");
>> //render map
>> byteReader = mapGuideRenderingService.RenderMap(mapGuideMap, selection,
>> mgEnvelope, width, height, new MgColor(backColor), "PNG", true);
>> 
>> mapGuideMap.Save(mapGuideResourceService);
>> //this throws "Null reference" exception
>> 
>> //If i use this other overload
>> mapGuideMap.Save(mapGuideResourceService,new
>> MgResourceIdentifier(resourceId));
>> //this throws "An exception occurred in the XML parser" exception
>> 
>> 
>> 
>> 
>> Jackie Ng wrote:
>>> 
>>> Which constructor for MgMap did you use and which overload of
>>> Create()/Open()/Save() did you use?
>>> 
>>> - Jackie
>>> 
>>> 
>>> gatopardo wrote:
>>>> 
>>>> I've tried to open the map with MgMap.Create() and with MgMap.Open()
>>>> I've tried to call Save(), but doesnt' work.
>>>> 
>>>> It could be a bug? Or I am doing something wrong?
>>>> 
>>>> 
>>>> 
>>>> Chris Claydon wrote:
>>>>> 
>>>>> I *think* that when you call RenderMap, it will set the width and
>>>>> height for the in-memory map object. Try calling Save() on the map to
>>>>> save the values back to the session repository before making the calls
>>>>> to GetDisplayWidth/GetDisplayHeight.
>>>>> 
>>>>> Chris.
>>>>> 
>>>>> -----Original Message-----
>>>>> From: mapguide-users-bounces at lists.osgeo.org
>>>>> [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of gatopardo
>>>>> Sent: Tuesday, May 26, 2009 7:05 AM
>>>>> To: mapguide-users at lists.osgeo.org
>>>>> Subject: RE: [mapguide-users] Tooltip on MapGuide Web API
>>>>> 
>>>>> 
>>>>> I've tried QueryFeatures on MgRenderingService, but it throws an
>>>>> exception.
>>>>> I've been looking the MgRenderingService source code, and the
>>>>> exception is
>>>>> because the map has the height, width and scale equal to 0.
>>>>> 
>>>>> I don't know how can I set this values on Web Api. Because the map
>>>>> doesn't
>>>>> have setDisplayWidth or setDisplayHeight methods, only have
>>>>> GetDisplayWidth
>>>>> and GetDisplayHeight. Both returns 0.
>>>>> 
>>>>> First of all I have rendered map images, but the map object doesn't
>>>>> save the
>>>>> render height and width.
>>>>> So I think the real problem is how to make that the MgMap Object
>>>>> "remembers"
>>>>> the last render height and width parameters, or how to set them.
>>>>> 
>>>>> 
>>>>> Chris Claydon wrote:
>>>>>> 
>>>>>> I'm pretty sure that QUERYMAPFEATURES ends up calling the
>>>>>> QueryFeatures
>>>>>> method on the MgRenderingService. You'll need to create a geometry
>>>>>> object
>>>>>> that corresponds to the point you're clicking on. It is best to make
>>>>>> it a
>>>>>> small square rather than a single point, in order for the spatial
>>>>>> filter
>>>>>> to pick up the underlying feature. And it should use coordinates in
>>>>>> the
>>>>>> same coordinate system as the map (not image pixel cords).
>>>>>> 
>>>>>> Chris.
>>>>>> 
>>>>>> From: mapguide-users-bounces at lists.osgeo.org
>>>>>> [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Kenneth
>>>>>> Skovhede, GEOGRAF A/S
>>>>>> Sent: Monday, May 25, 2009 7:35 AM
>>>>>> To: MapGuide Users Mail List
>>>>>> Subject: Re: [mapguide-users] Tooltip on MapGuide Web API
>>>>>> 
>>>>>> The operation is called "QUERYMAPFEATURES", but I can't seem
>>>>>> to find it as a function from the Web API.
>>>>>> You can see it in use if you look in the file:
>>>>>> C:\program
>>>>>> files\MapGuideOpenSource2.0\WebServerExtensions\www\viewerfiles\ajaxmappane.templ
>>>>>> line 2555.
>>>>>> 
>>>>>> You may also want to read this thread:
>>>>>> http://lists.osgeo.org/pipermail/mapguide-users/2007-January/004818.html
>>>>>> 
>>>>>> 
>>>>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>>>> 
>>>>>> 
>>>>>> gatopardo skrev:
>>>>>> 
>>>>>> Nobody can help me?
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> gatopardo wrote:
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> How could I get the Tooltip on a point using MapGuide Web API?
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> Example:
>>>>>> 
>>>>>> I have generated an image using MgRenderingService.RenderMap, and
>>>>>> after
>>>>>> 
>>>>>> that I want to get the tooltip on a point of this image, using the
>>>>>> 
>>>>>> coordinates on image pixels or converting them to lat-lon.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> But I haven't found any method that makes this.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
>>>>>> mapguide-users mailing list
>>>>>> mapguide-users at lists.osgeo.org
>>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>>> 
>>>>>> 
>>>>> 
>>>>> -- 
>>>>> View this message in context:
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>>>>> Sent from the MapGuide Users mailing list archive at Nabble.com.
>>>>> 
>>>>> _______________________________________________
>>>>> mapguide-users mailing list
>>>>> mapguide-users at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>> _______________________________________________
>>>>> mapguide-users mailing list
>>>>> mapguide-users at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>> 
>>>>> 
>>>> 
>>>> 
>>> 
>>> 
>> 
>> 
> 
> 

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