QtCreator highlight current line

If you want highlight current line in editor
Main menu: Tools > Options > Text Editor > Display > Highlight current line

QtCreator - missing main menu

To open settings window in QtCreator

• 1. Switch to debug mode
• 2. Right click on 'Name|Value|Type' area
• 3. In menu choose 'Configure debugger'
• 4. Configure hot keys in 'Envioronment' tab

Additional info here.