NX Why QuickPick dialog has OK and Cancel ?

After selecting the object of your choice on QuickPick dialog, you have to select OK or Cancel instead of just double-clicking the object from the dialog to select. 
How do you get rid of OK and Cancel?

Solution

If you use Touch Panel Role or Touch Tablet Role instead of Default
Role, you will have OK and Cancel at the bottom of QuickPick dialog.
To remove the OK and Cancel buttons, you can go to the resource bar, Roles --> Role Default. Or you can click on the Touch Mode icon at the top toolbar to get out of Touch Mode

Notes and References

Hardware/Software Configuration

Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: SYSENG
Version: V12.0.2
Function: UI_TOOLS

Ref: 001-7785233