windows下弹出指定USB设备的小程序

#include <windows.h>

#include <tchar.h>#include <SetupAPI.h>#include <cfgmgr32.h>#pragma comment(lib, "cfgmgr32")int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE PrevInstance, LPSTR CmdLine, int CmdShow){    TCHAR* hid = _T("USB\Vid_0c76&Pid_0007\USB000000001"); // VID&PID 可在设备管理器中得到    HMACHINE hMachine = NULL;    DEVINST dnDevInst = NULL;    PDEVINST pdnDevInst_OUT = &dnDevInst;    if (CR_SUCCESS == CM_Locate_DevNode_Ex(pdnDevInst_OUT, hid, CM_LOCATE_DEVNODE_NORMAL, hMachine)) {if (CR_SUCCESS == CM_Request_Device_Eject_Ex(dnDevInst, NULL, NULL, 0, 0, hMachine )){MessageBox(NULL, _T("Eject success"), _T("info), 0);}}        return 0;}