CTRL+PLUS and CTRL+MINUS for resizing.

Author: shurane

.gvimrc

@@ -1,6 +1,6 @@
 " GVim Settings {{{
 " maybe i'll relocate it to .gvimrc later
-    set novisualbell 
+    set novisualbell
     set t_vb=
     set guioptions=Aci
     map <F3> <Esc>:set guifont=*<CR>
@@ -14,6 +14,26 @@
     endif
     " }}}
 
+    function! EnlargeFont()
+        let l:font=split( &guifont )
+        let l:font[-1] = l:font[-1] + 1
+        let &guifont=join( l:font, ' ' )
+    endfunction
+
+    function! ShrinkFont()
+        let l:font=split( &guifont )
+        if l:font[-1] > 2 
+            let l:font[-1] = l:font[-1] - 1
+            let &guifont=join( l:font, ' ' )
+        endif
+    endfunction
+
+    inoremap <C-kPlus>  <ESC>:call EnlargeFont()<CR>i
+    nnoremap <C-kPlus>  :call EnlargeFont()<CR>
+
+    inoremap <C-kMinus> <ESC>:call ShrinkFont()<CR>i
+    nnoremap <C-kMinus> :call ShrinkFont()<CR>
+
 " }}}