Advantech RISC SOM-A2558 Información técnica descargar pdf (Pagina 30)

Your ePlatform Partner

Advantech SOM-A200 series Software Manual

- DeviceIoControl

This function sends a control code directly to a specified device driver, causing the

corresponding device to perform the specified operation.

BOOL DeviceIoControl(

HANDLE hDevice,

DWORD dwIoControlCode,

LPVOID lpInBuffer,

DWORD nInBufferSize,

LPVOID lpOutBuffer,

DWORD nOutBufferSize,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped);

- Parameters

hDevice

[in] Handle to the device that is to perform the operation. Call the Create- File function to obtain a

device handle.

dwIoControlCode

[in] Specifies the control code for the operation. This value identifies the specific operation to be

performed and the type of device on which the operation is to be performed. No specific values are

defined for the dwIo- ControlCode parameter. However, the writer of a custom device driver can define

IOCTL_XXXX control codes, per the CTL_CODE macro.

These control codes can then be advertised, and an application can use these control codes with

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 41 42

Sin comentarios

Advantech RISC SOM-A2558 Información técnica Pagina 30