IOCTL_SD_BUS_DRIVER_GET_SLOT_COUNT (Compact 2013)
3/26/2014
This I/O control message returns the number of slots detected in the secure digital (SD) bus controller. Send this message with DeviceIoControl.
Syntax
BOOL DeviceIoControl(
HANDLE hDevice, // handle to device
DWORD dwIoControlCode, // use IOCTL_SD_BUS_DRIVER_GET_SLOT_COUNT
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
The handle to the bus driver.
- dwIoControlCode
[in] Control code for the operation. Use IOCTL_SD_BUS_DRIVER_GET_SLOT_COUNT for this operation.
- lpInBuffer
[in] Not used; set to NULL.
- nInBufferSize
[in] Not used; set to zero.
- lpOutBuffer
[out] Pointer to a DWORD variable that contains the number of slots.
- nOutBufferSize
[in] Size of the value pointed to by lpOutBuffer.
- lpBytesReturned
[out] Pointer to a DWORD variable to return the length of returned data. If there is no error, set to sizeof(DWORD).
- lpOverlapped
Ignored.
Return Values
Returns TRUE if successful; otherwise, returns FALSE.
Remarks
To get extended error information, call GetLastError. GetLastError may return other standard error messages as appropriate.
Requirements
Header |
sdcardddk.h |