map transparency functionality has not been implemented for point maps

[GoogleCodeExporter]

 I have a basemap (Nokia) and the transparency dialog comes
up, but it doesn’t seem to do anything. 

Original issue reported on code.google.com by lixun...@gmail.com on 5 Aug 2015 at 11:11

[GoogleCodeExporter]

one solution has been proposed in ci 3727.  

However, the current implementation of transparency on windows is by directly 
manipulate the bitmap of map (wx is slow using transparency in win), so it 
can't get the effect of point density / cloud (eg more dense points, less 
transparent) using true alpha channel like on MacOSX.

Original comment by lixun...@gmail.com on 5 Aug 2015 at 11:17