Parameter info popup
The Parameter Info popup shows the parameter names in function calls. CLion automatically shows a popup with all the available signatures within 1 second (1000 milliseconds) after you type an opening bracket in the editor or select a method from the suggestion list.
CLion shows parameter info for C/C++ and CMake.
Invoke the parameter info popup manually
You can manually invoke the popup if it has closed or if the IDE is configured not to show the popup automatically.
Press Ctrl+P (or click ).
Configure the parameter info popup
Go to .
In the Show the parameter info popup in ... milliseconds field, specify the time in milliseconds after which the popup should appear.
If you don't want the popup to appear automatically, clear the Show the parameter info popup in ... milliseconds checkbox.
Show full signatures
By default, the parameter info popup shows simple signatures. You can configure the IDE to show full signatures that include function names and returned types.
Go to .
Set the Show full method signatures checkbox.
