Re: trim down a picture box
Check out this thread. There are many others - just search for "transparent picturebox".
Re: trim down a picture box
A picturebox is a rectangle, nothing to about that.
What you could is find out the color of the pixel that was clicked on.
If it is blue then it is sea, if it is green then it is Canada.
You need two bitmaps.
One is a big map that looks nice, this is shown to the user.
The other is a map that looks less nice but each country has it's own unique color.
When the user clicks on the displayed map you take the underlying color from the other map.
Now you know which country was clicked.