如何发现系统中插入了新驱动器或驱动器中插入新盘

[抬头看路]

如何发现系统中插入了新驱动器或驱动器中插入新盘

[xiaohedou]

你用这个函数试试DeviceIoControl：

IOCTL_STORAGE_CHECK_VERIFY
The IOCTL_STORAGE_CHECK_VERIFY DeviceIoControl operation determines whether a device's media is accessible; for example, whether the media is in the device.

BOOL DeviceIoControl(
(HANDLE) hDevice, // handle to device of interest
IOCTL_STORAGE_CHECK_VERIFY, // dwIoControlCode, control code of
// operation to perform
NULL, // lpInBuffer is not used; must be NULL
0, // nInBufferSize is not used; must be zero
NULL, // lpOutBuffer is not used; must be NULL
0, // nOutBufferSize is not used;
// must be zero
(LPDWORD) lpBytesReturned, // pointer to variable to receive
// output byte count
(LPOVERLAPPED) lpOverlapped // pointer to OVERLAPPED structure
// for asynchronous operation
);

[xiaohedou]

bool IsMediaExist(char *Drive)
{
char DeviceName[MAX_PATH];
HANDLE hDevice;
DWORD cbBytesAct = 0;
bool fMediaExist = false;

sprintf(DeviceName, "\\\\.\\%s", Drive);

hDevice = CreateFile(
DeviceName,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
NULL,
NULL);

if (hDevice != INVALID_HANDLE_VALUE) {
if (DeviceIoControl(
hDevice,
IOCTL_DISK_CHECK_VERIFY,
NULL,
0,
NULL,
0,
&cbBytesAct,
NULL)) {
fMediaExist = true;
}

CloseHandle(hDevice);
}

return( fMediaExist );
}

[zhouzcy]

up

[抬头看路]

我的意思是当发生上面说的情况时Windows是否会发出什么消息，而不是通过轮询的方式察看。