Code refactoring is the process of changing the code without modifying the existing functionality of your application. By refactoring your code you can:
Improve internal quality of your application
Improve performance and extensibility
Improve code readability and maintainability
Simplify code structure
Finding Symbols
To find the use of a specific symbol in your project:
In the editor place the cursor on the symbol and select Tools > C++ > Find Usages or press Ctrl+Shift+U.
Qt Creator looks for the symbol in the following locations:
Files listed as a part of the project
Files directly used by the project files (for example, generated files)
Header files of used frameworks and libraries
The Search Results pane opens and shows the location and number of instances of the symbol in the current project.
You can browse the search results in the following ways:
To go directly to an instance, double-click the instance in the Search Results pane.
To move between instances, click and in the Search Results pane.
To expand and collapse the list of all instances, click .
To clear the search results, click .
Renaming Symbols
The functions available for renaming symbols depend on whether you are writing C++ or QML code. For QML, you can only rename IDs.
To rename a specific symbol in a Qt project:
In the editor, place the cursor on the symbol you would like to change and select Tools > C++ > Rename Symbol Under Cursor or press Ctrl+Shift+R.
The Search Results pane opens and shows the location and number of instances of the symbol in the current project.
To replace all selected instances, enter the name of the new symbol in the Replace with text box and click Replace.
To omit an instance, uncheck the check-box next to the instance.
Note: This action replaces all selected instances of the symbol in all files listed in the Search Results pane. You cannot undo this action.
Note: Renaming local symbols does not open the Search Results pane. The instances of the symbol are highlighted in code and you can edit the symbol. All instances of the local symbol are changed as you type.
To rename an ID in a QML file:
Right-click an ID in the QML code and select Rename id.