Opening a File with mmioOpen

To open a file for basic I/O operations, set the lpmmioinfo parameter of the mmioOpen8DMA.3 function to NULL. The following example opens a file named  C:\SAMPLES\SAMPLE1.TXT  for reading, and checks the return value for error.

HMMIO hFile;

if ((hFile = mmioOpen("C:\\SAMPLES\\SAMPLE1.TXT", NULL,

    MMIO_READ)) != NULL)

    // File opened successfully.

else

    // File cannot be opened.

Use the dwFlags parameter of mmioOpen8DMA.3 to specify flags for opening a file.