我如何检查是否有USB插入或USB移除在C/ c++

How I could check if there is a USB inserted or USB removal in C/C++

本文关键字：USB 插入 c++ 何检查 检查 是否      更新时间：2023-10-16

我想为windows 7做一个程序，检查所有的时间，如果有USB插入或USB移除在C/c++，我怎么能做到这一点?你能给出一个示例代码吗?

它工作了，谢谢大家，这是代码:

#define _WIN32_WINNT 0x0501
#include <windows.h>
#include <dbt.h>
#include <iostream>
#include <iomanip>
using namespace std;
#define USE_CDROM_GUID_ONLY

//-----------------------------------------------------------------------------
MSG msg;
void pupu(HWND hwnd);
LRESULT CALLBACK WinProc(HWND hwnd, UINT msg,WPARAM wParam, LPARAM lParam)
{
    if (msg == WM_DEVICECHANGE)
    {
        switch (wParam){
            case DBT_DEVICEARRIVAL:
                printf("new device connected n");
                break;
            case DBT_DEVICEREMOVECOMPLETE:
                printf("a device has been removed n");
                break;
        }
    }//if
    else
    cout << "Got msg " << msg << ", " << int(wParam)
    << ", " << int(lParam) << endl;
return 1;
}//WinProc
//-----------------------------------------------------------------------------
HWND pipi(){
    const char *className = "DevNotifyTest";
    WNDCLASSA wincl = { 0 };
    wincl.hInstance = GetModuleHandle(0);
    wincl.lpszClassName = className;
    wincl.lpfnWndProc = WinProc;

    HWND parent = 0;
#ifdef USE_MESSAGE_ONLY_WINDOW
    parent = HWND_MESSAGE;
#endif
    HWND hwnd = CreateWindowExA(WS_EX_TOPMOST, className, className,0, 0, 0, 0, 0,     parent, 0, 0, 0);

    GUID cdromDevIntGuid =
    { 0x53F56308, 0xB6BF, 0x11D0,
    { 0x94, 0xF2, 0x00, 0xA0, 0xC9, 0x1E, 0xFB, 0x8B } };
    DEV_BROADCAST_DEVICEINTERFACE_A notifyFilter = { 0 };
    notifyFilter.dbcc_size = sizeof(notifyFilter);
    notifyFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
    notifyFilter.dbcc_classguid = cdromDevIntGuid;
    HDEVNOTIFY hDevNotify =
        RegisterDeviceNotificationA(hwnd, &notifyFilter,
#ifndef USE_CDROM_GUID_ONLY
        DEVICE_NOTIFY_ALL_INTERFACE_CLASSES |
#endif
        DEVICE_NOTIFY_WINDOW_HANDLE);

    return hwnd;

}
void pupu(HWND hwnd){   
        BOOL bRet = PeekMessage(&msg, hwnd, 0, 0, PM_NOREMOVE);
        TranslateMessage(&msg);
        DispatchMessage(&msg);
        Sleep(1000);
}
int main()
{
    HWND hwnd = pipi();
    for (;;){
        pupu(hwnd);
        Sleep(1000);
    }
    return 0;
}//main

注册设备通知是一个设备通知示例。

RegisterDeviceNotification函数，注册接收来自系统的通知消息。

检测媒体插入或删除Windows发送WM_DEVICECHANGE消息到顶级窗口，当新的设备或媒体被添加和可用，当现有的设备或媒体被删除。

相关文章：