Mouse input in gvim

Can standard mouse input be customized in vim (in my case gvim)? Plugins are acceptable options too.

I'm specifically interested in "overriding" a double-click on a word开发者_运维技巧, so that instead of just highlighting the word, gvim does a search and thus highlights all instances of this word in the file. I've seen this functionality in other editors and found it very useful.

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See :help double-click. It should have everything you need. For example from the help page:

An example, for using a double click to jump to the tag under the cursor:

:map <2-LeftMouse> :exe "tag ". expand("<cword>")<CR>

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I don't regarding mouse, but you can press */# to search word under cursor forward/backward.