AddFromFile Method
Adds a certificate to the storage.
Syntax
int AddFromFile(const QString& qsFilename);
Remarks
Use this method to add a certificate stored in a file.
Error Handling
This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)