Viewing Function Signature Information
Parameter hints show the names of parameters in methods and functions.
View the parameter hints for a method
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Place the caret anywhere within the call of the method or function and press Ctrl+P or choose on the main menu.
Configure the appearance and behavior of parameter hints
In the Settings/Preferences dialog (Ctrl+Alt+S), click General under Editor, and then click Code Completion. The Code Completion page opens.
To have a complete method or function signature shown rather than a list of required types, select the Show full signatures checkbox in the Parameter info area.
To have the list of parameter types for the called method or function shown automatically after a certain delay, select the Auto pop-up (in ms) checkbox and specify the time period in milliseconds.