CStdString str = "Hello, world!"; char* buffer = str.GetBuffer(str.GetLength() + 1); strcpy_s(buffer, str.GetLength() + 1, "Goodbye, world!"); str.ReleaseBuffer();
CStdString str = "Hello, world!"; char* buffer = str.GetBuffer(str.GetLength() + 1); for (int i = 0; i < str.GetLength(); i++) { buffer[i] = toupper(buffer[i]); } str.ReleaseBuffer();This example retrieves the buffer pointer of `str`, iterates through each character and converts it to uppercase, and then releases the buffer. The CStdString class is part of the MFC (Microsoft Foundation Classes) library, which is a set of C++ classes that provide an object-oriented interface to the Windows API.