show confirm dialog box when click abort button in WorkingForm.
tree6c35390c15ed0b1c390febb3b028c800503aa35f
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drwxr-xr-x - ControlExs
-rw-r--r-- 9159 LICENSE
-rw-r--r-- 1419 README.md
-rw-r--r-- 1443 mp4box.sln
drwxr-xr-x - mp4box