My application stores locations of building sites and coordinates for trenches between sites. Users select which sites and trenches they want shown on the map, then a local html file is created that includes all the data, calculates the google map size to include all the selected sites, then plots them onto a map with custom markers and labels. Attached is an example of a created file.
If there is a better way of doing this I am open to suggestions. One idea was to load the html directly into the control, but I don't want to start playing with that until I know that the code can be run.
I've had a quick test & can confirm that the map image isn't loading
I'll look at it again later when I have time but unlikely to be today. Hopefully someone else will look at it as well.
In the meantime, I suggest you
a) try the attached local HTML file (add your own API key)
b) look at my 3-part series of articles (and video) on annotating Google maps in Access.
The first article in a series which demonstrates ways of 'annotating' downloaded maps to personalise these for your clients. Features include the use of marker points, lines, circles & boundary shapes, nearby places and styles. All features are added as new map layers. An example app is provided.
www.isladogs.co.uk
The articles pre-date the new Edge browser control but that shouldn't matter for this purpose
Although my examples are all based on UK postcodes, the principle appears to be the same as what you are doing.