wxString str = "Hello, World!"; size_t len = str.size(); // len is now 13
wxString str = ""; if(str.size() == 0) std::cout << "The string is empty"; else std::cout << "The string has " << str.size() << " characters";In this example, we create a wxString object with an empty string and use the size() function to check if it is empty. If the size is 0, it is considered empty, and we print a message accordingly. Otherwise, we print the number of characters present in the string. Package/Library: wxWidgets