How to add additional characters to the Android on-screen keyboard or create your own keyboard layout?

Question

Android

I use HTC Desire. There is an acute shortage of Russian quotation marks (“Christmas trees”), an em dash (-) and a non-breaking space; would not refuse other symbols of the Birman layout .
Therefore, the question is: is it possible to replenish the on-screen keyboard of HTC Desire with additional characters? If so, how? If not, what are the workarounds (create your own keyboard layout? download another keyboard for which there are layout changers?)?…

Answer 1

Not quite sure if it is.
www.gimpsta.com/themer/index.php
here, if my memory serves me, you can build your own keyboard.

Answer 2

cannot be replenished.
you can make your own layout, for example, to code.google.com/p/softkeyboard/ (although I have never tried it)

Answer 3

I use swype, all these characters are there =) try it, I like it

Answer 4

If the question is still relevant, here is my instruction for editing the standard AOSP keyboard (root is needed):
w3bsit3-dns.com/forum/index.php?showtopic=540887&view=find...