filename1 - the source directory + *.* (to indicate to FindNextFile() that all files are required).
filename2 - the target directory (which is then appended with the filename that FindFirstFile/FindNextFile produces).
filename1 - the source directory + *.* (to indicate to FindNextFile() that all files are required).
filename2 - the target directory (which is then appended with the filename that FindFirstFile/FindNextFile produces).