IOCTL_FLASH_GET_REGION_FREE_SPACE (Compact 2013)
3/26/2014
This I/O control message retrieves the number of free blocks in a particular region that can be used for creating new partitions. The block count retrieved accounts for bad blocks. Send this message with DeviceIoControl.
Syntax
BOOL DeviceIoControl(
HANDLE hDevice, // handle to the device
DWORD dwIoControlCode, // use IOCTL_FLASH_GET_REGION_FREE_SPACE
LPVOID lpInBuffer, // pointer to input buffer
DWORD nInBufferSize, // input buffer size
LPVOID lpOutBuffer, // pointer to output buffer
DWORD nOutBufferSize, // output buffer size
LPDWORD lpBytesReturned, // number of bytes returned
OVERLAPPED lpOverlapped, // pointer to OVERLAPPED structure
);
Parameters
- hDevice
[in] Handle to the device.
- dwIoControlCode
[in] The control code for the operation. Use IOCTL_FLASH_GET_REGION_FREE_SPACE for this operation.
- lpInBuffer
[in] Pointer to a DWORD containing the region index from which to get free space.
- nInBufferSize
[in] Size of a DWORD.
- lpOutBuffer
[out] Number of free blocks available.
- nOutBufferSize
[out] Size of a DWORD.
- lpBytesReturned
Not used; set to NULL.
Return Values
Returns nonzero if successful; otherwise, returns zero.
Remarks
To get extended error information, call GetLastError. GetLastError may return other standard error messages as appropriate.
Requirements
Header |
FlashMdd.h |