CString IsEmpty

CString IsEmpty is a member function of the CString class in MFC (Microsoft Foundation Classes), which is a framework for developing Windows-based applications. This function is used to check whether a CString object is empty or not.

If the CString object is empty, meaning it does not contain any characters, the IsEmpty function will return a non-zero value (TRUE). Otherwise, if the CString object has at least one character, the function will return zero (FALSE).

Here's an example of how you can use the IsEmpty function in C++:

CString str = "Hello, world!";

if (str.IsEmpty()) {
    // The string is empty
    // Perform some actions
} else {
    // The string is not empty
    // Perform some other actions
}

In this example, the IsEmpty function is used to conditionally perform different actions based on whether the CString object "str" is empty or not.