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,

&CurrentFrame, sizeof (ULONG),

&dwBytes, NULL);