Opening a File with mmioOpen

To open a file for basic I/O operations, set the lpmmioinfo parameter of the mmioOpen 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,


// File opened successfully.


// File cannot be opened.

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

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