NSIS 文件关联方法

Section ".txt" Note
DetailPrint "关联 txt 文件..."
SectionIn 1
WriteRegStr HKCR ".txt" "" "Note.file"
WriteRegStr HKCR "Note.file" "" "文本文件 (.txt)"
WriteRegStr HKCR "Note.file\DefaultIcon" "" "$INSTDIR\Note.exe,0"
WriteRegStr HKCR "Note.file\shell" "" ""
WriteRegStr HKCR "Note.file\shell\open" "" ""
WriteRegStr HKCR "Note.file\shell\open\command" "" '"$INSTDIR\Note.exe" "%1"'
SectionEnd

菜单默认显示为“打开(&O)”；如需要更改菜单内容，还需要将以下内容
WriteRegStr HKCR "Note.file\shell" "" ""
WriteRegStr HKCR "Note.file\shell\open" "" ""
改为：
WriteRegStr HKCR "Note.file\shell" "" open
WriteRegStr HKCR "Note.file\shell\open" "" "编辑(&E)"