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IOCTL_SD_BUS_DRIVER_ENABLE_SLOT_POWER_CONTROL (Compact 2013)

  • Article

3/26/2014

This I/O control message enables power control for a given slot on the next insertion. This functionality is dependent on hardware support. Send this message with DeviceIoControl.

Syntax

BOOL DeviceIoControl(
    HANDLE hDevice,           // handle to device
    DWORD dwIoControlCode,    // use IOCTL_SD_BUS_DRIVER_ENABLE_SLOT_POWER_CONTROL
    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_ENABLE_SLOT_POWER_CONTROL for this operation.
  • lpInBuffer
    [in] Pointer to a DWORD variable that indicates the slot index.
  • nInBufferSize
    [in] Size of the value pointed to by lpInBuffer.
  • lpOutBuffer
    [out] Not used; set to NULL.
  • nOutBufferSize
    [in] Not used; set to zero.
  • lpBytesReturned
    [out] Pointer to a DWORD variable to return the length of returned data.
  • 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

See Also

Reference

Secure Digital (SD) Card Driver IOCTLs