some changes to avoid warning
no clear local variables when build buffer
update a format setting of select widget
update a format setting of radio widget
update a setting of text widget
Merge pull request #1 from aki2o/avoid-warn

some changes to avoid warning
Merge pull request #2 from aki2o/no-clear-local-var

no clear local variables when build buffer
Merge pull request #5 from aki2o/update-select-format

update a format setting of select widget
Merge pull request #7 from aki2o/update-text-format

update a setting of text widget
Merge pull request #6 from aki2o/update-radio-format

update a format setting of radio widget