overlay-icon-disappear

Google Map Overlay Icon disappears at certain zoom level

I notice that Firefox 3 demonstrates this problem. I put down an overlay icon and play around with the map zoom. At certain zoom level, I found that the icon disappears for some unknown reason. Zooming out brings back the icon. Or during the disappearance, I click on the Google Map and it will somehow trigger to bring back the icon. I...

How can I register OverlayIcon.dll and call it to display overlay icon on the selected file/folder?

I read this article in http://www.codeproject.com/KB/shell/overlayicon.aspx. I have some questions that I cannot answer. Please help me? First, After I build the project. I received an OverlayIcon.dll. I use regsrv32 to register it to window. How can I call or do something to enable overlay icon on file? Whether I will use other program...