Bác làm theo cái này.
To change the softkeys on the Today screen
The left-hand softkey settings are at 'HKEY_CURRENT_USER\Software\Microsoft\Today\Keys\112', the right-hand softkey settings are at 'HKEY_CURRENT_USER\Software\Microsoft\Today\Keys\113'
The 'Default' string value can be changed to whatever text you wish to have displayed
The 'Open' string value can be changed to the program you wish to run when the softkey is pressed
For example, to change the left-hand softkey to start Pocket Excel you would set
HKEY_CURRENT_USER\Software\Microsoft\Today\Keys\112\(Default) = Pocket Excel
HKEY_CURRENT_USER\Software\Microsoft\Today\Keys\112\Open = \windows\pxl.exe
Nguồn "wiki.xda-developers"