VC 识别USB HID设备

遇到问题：和http://bbs.csdn.net/topics/190065205论坛中一样，不过前辈是2007年遇到的。。。

有一个USB设备，在设备管理器中显示为一个磁盘驱动器，但是它是没有盘符的， 在OnDeviceChange中，当这个设备插入或者拔插的时候产生多个DBT_DEVNODES_CHANGED, 而DBT_DEVICEARRIVAL, DBT_DEVICEREMOVECOMPLETE之类的却截获不到，如何才能截获到DBT_DEVICEARRIVAL, DBT_DEVICEREMOVECOMPLETE？(U盘之类的USB设备可以截获的到)

解决代码如下：

#include <tchar.h>
#include <string>
#include <iostream>
#include <Windows.h>
#include <dbt.h>

GUID HIDClassGuid = {0x4D1E55B2,0xF16F,0x11CF,{0x88,0xCB,0x00,0x11,0x11,0x00,0x00,0X30}};

void RegisterForDeviceNotifications(HWND m_hWnd)
{

// Request to receive messages when a device is attached or removed.
// Also see WM_DEVICECHANGE in BEGIN_MESSAGE_MAP(CUsbhidiocDlg, CDialog).

DEV_BROADCAST_DEVICEINTERFACE DevBroadcastDeviceInterface;
HDEVNOTIFY DeviceNotificationHandle;

DevBroadcastDeviceInterface.dbcc_size = sizeof(DevBroadcastDeviceInterface);
DevBroadcastDeviceInterface.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
DevBroadcastDeviceInterface.dbcc_classguid = HIDClassGuid;

DeviceNotificationHandle =
RegisterDeviceNotification(m_hWnd, &DevBroadcastDeviceInterface, DEVICE_NOTIFY_WINDOW_HANDLE);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
TCHAR szMsg[80];
char driveName;

switch(uMsg)
{
case WM_DEVICECHANGE:
switch(wParam )
{
case DBT_DEVNODES_CHANGED:

printf("USB Drive: has inserted.\r\n");
MessageBox(hWnd, "USB Drive: has inserted 0x0007.", TEXT("WM_DEVICECHANGE"), MB_OK);
//ShellExecute(0, "open", "C:\\Program Files\\Internet Explorer\\iexplore.exe", "http://www.baidu.com", NULL, SW_SHOW);
break;
case DBT_DEVICEARRIVAL:

printf("USB Drive: has inserted.\r\n");
MessageBox(hWnd, "USB Drive: has inserted 0x8000.", TEXT("DBT_DEVICEARRIVAL"), MB_OK);
break;
case DBT_DEVICEREMOVECOMPLETE:

printf("USB Drive: has gone.\r\n");
MessageBox(hWnd, "USB Drive: has gone 0x8004.", TEXT("DBT_DEVICEREMOVECOMPLETE"), MB_OK);
break;

default:
;
}
break;
default:
;
}

return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

int main(int argc, char *argv[])
{
TCHAR szClassName[] = _T("MyUsbCheck");
WNDCLASS wndcls = {0};
wndcls.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndcls.hCursor = (HCURSOR)LoadCursor(NULL, IDC_ARROW);
wndcls.hIcon = (HICON)LoadIcon(NULL, IDI_APPLICATION);
wndcls.lpfnWndProc = WndProc;
wndcls.lpszClassName = szClassName;

if(!RegisterClass(&wndcls))
{
printf("RegisterClass Failed!\r\n");
return 0;
}

HWND hWnd = CreateWindow(szClassName, szClassName, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
if(NULL == hWnd)
{
printf("CreateWindow Failed!\r\n");
return 0;
}

ShowWindow(hWnd, SW_HIDE);
UpdateWindow(hWnd);
RegisterForDeviceNotifications(hWnd);

MSG msg;
while(GetMessage(&msg, NULL, NULL, NULL))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
}

如题主要是添加了：将USB设备用

RegisterForDeviceNotifications(hWnd);//进行注册。