Creating and Deleting a File
To create a file, set the dwOpenFlags parameter of the mmioOpen function to MMIO_CREATE. The following example creates a file and opens it for reading and writing.
HMMIO hFile; hFile = mmioOpen("NEWFILE.TXT", NULL, MMIO_CREATE | MMIO_READWRITE); if (hFile != NULL) // File created successfully. else // File cannot be created.
If the file you are creating already exists, it will be truncated to zero length.
To delete a file, set the dwOpenFlags parameter of the mmioOpen function to MMIO_DELETE. After you delete a file, it cannot be recovered by any standard means. If your application is deleting a file at the request of a user, query the user before deleting the file to make sure the user wants to delete it.