This is a tweaking dll for GVim.
copy vimtweak32.dll or vimtweak64.dll into same directory with gvim.exe
:call libcallnr("vimtweak64.dll", "SetAlpha", 200)
:call libcallnr("vimtweak64.dll", "SetAlpha", 255)
:call libcallnr("vimtweak64.dll", "EnableMaximize", 1)
:call libcallnr("vimtweak64.dll", "EnableMaximize", 0)
:call libcallnr("vimtweak64.dll", "EnableTopMost", 1)
:call libcallnr("vimtweak64.dll", "EnableTopMost", 0)
MIT
Yasuhiro Matsumoto (a.k.a mattn)