IStiDevice::UnLockDevice method (sti.h)

The IStiDevice::UnLockDevice method unlocks a device that was locked by a previous call to IStiDevice::LockDevice.

Syntax

HRESULT UnLockDevice();

Return value

If the operation succeeds, the method returns S_OK. Otherwise, it returns one of the STIERR-prefixed error codes defined in stierr.h.

Remarks

Before the IStiDevice::UnLockDevice method releases the IStiDevice-level lock on the device, it calls IStiUSD::UnLockDevice in the appropriate vendor-supplied minidriver.

Before calling IStiDevice::UnLockDevice, clients of the IStiDevice COM interface must call IStillImage::CreateDevice to obtain an IStiDevice interface pointer, which provides access to a specified device.

Requirements