If you are experimenting some strange issues (maps goes blank, some elements of the maps are not displayed) using the Google Maps API from a desktop application.
This is because the JavaScript API v3 no longer supports the IE7 and IE8 rendering mode, as is stated on this document https://developers.google.com/maps/documentation/javascript/browsersupport.
The workaround is very simple just add the V=3 parameter to the script tag, So if you script looks like this
[sourcecode language=”jscript”]
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
[/sourcecode]
Change to
[sourcecode language=”jscript”]
<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3&sensor=true"></script>
[/sourcecode]
Note : If you do not explicitly specify a version in your JavaScript API bootstrap request, you will receive the experimental version by default (3.22) which not longer supports the IE8.
Another option is tweak the Windows registry how is shown here.
By the way I just updated all the Google Maps related code of this blog (Check the updated code on Github).
Some additional references
- Using the Google Maps API V3 from Delphi – Part I Basic functionality
- Using the Google Maps API V3 from Delphi – Part II Styled Maps
- Using the Google Maps API V3 from Delphi – Part III Getting the latitude and longitude of a mouse click
- Google Maps Javascript API – Versioning
- Google Maps Javascript API – Relesea Notes
- https://code.google.com/p/gmaps-api-issues/issues/detail?id=8750
- https://code.google.com/p/gmaps-api-issues/issues/detail?id=8754
Regards
Rodrigo.
