IOCTL_ADAPT_GET_CURRENT_FRAME |
Description
This command returns the current frame number from the host controller driver.
A pointer to a 4-byte variable is passed as both the lpInBuffer and lpOutBuffer parameters to the DeviceIoControl( ) function.
The size of the variable (4) is passed in the nInBufferSize and nOutBufferSize parameters.
Example
DWORD dwBytes = 0; ULONG CurrentFrame; DeviceIoControl(hDevice, IOCTL_ADAPT_GET_CURRENT_FRAME, DeviceIoControl(hDevice, IOCTL_ADAPT_GET_CURRENT_FRAME, &CurrentFrame, sizeof (ULONG), &CurrentFrame, sizeof (ULONG), &dwBytes, NULL); |