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IOCTL_STORAGE_GET_MEDIA_TYPES info  Overview  Group

The IOCTL_STORAGE_GET_MEDIA_TYPES DeviceIoControl operation returns information about the types of media a device driver supports.

dwIoControlCode = IOCTL_STORAGE_GET_MEDIA_TYPES;   // operation code 

lpInBuffer = NULL;  // address of input buffer; not used; must be NULL 

nInBufferSize = 0;  // size of input buffer; not used; must be zero 

lpOutBuffer ;       // address of output buffer 

nOutBufferSize ;    // size of output buffer 

lpBytesReturned;    // address of actual bytes of output 

 

Parameters

lpInBuffer
Points to an input buffer. Not used with this operation. Set to NULL.
nInBufferSize
Specifies the size, in bytes, of the buffer pointed to by lpInBuffer. Not used with this operation. Set to zero.
lpOutBuffer
Points to a buffer that will receive an array of DISK_GEOMETRY data structures specifying the media types the device driver supports.
nOutBufferSize
Specifies the size, in bytes, of the buffer pointed to by lpOutBuffer, which must be large enough to contain as many DISK_GEOMETRY structures as there are media that the driver supports.
lpBytesReturned
Points to a DWORD that receives the actual size, in bytes, of the data stored into lpOutBuffer.

Return Values

If the operation succeeds, DeviceIoControl returns a nonzero value.

If the operation fails, DeviceIoControl returns zero. To get extended error information, call GetLastError.

Remarks

This device I/O control operation is for all class drivers, as well as non-small computer system interface (SCSI) hard drives and floppy disk devices.

See Also

DeviceIoControl, DISK_GEOMETRY, IOCTL_DISK_GET_DRIVE_GEOMETRY

See also:


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