Adapt > Engage > Dominate

Lost Input Devices

HRESULT hr;
hr=dikeyboard->GetDeviceState(sizeof(keys), (LPVOID)&keys);
if(hr==DIERR_INPUTLOST || hr==DIERR_NOTACQUIRED)
{
dikeyboard->Acquire();
dikeyboard->GetDeviceState(sizeof(keys), (LPVOID)&keys);

}

Above code can be used as an example to reaquire the keyboard/mouse if necessary after Alt+Tab or any other action which might cause the loss of the device.  The main idea is to store the result of GetDeviceState and then check for the error codes indicating failure.

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