Windows 7では、USBドライブを装着した状態で
CM_Request_Device_Eject を実行した場合、
pVetoType, pszVetoName, ulNameLength に NULL(0) を渡すと、
タスクトレイ アイコンのバルーンより"'USB大容量記憶装置' はコンピューターから安全に取り外すことができます。"と表示されます。
Windows 10でも、デバイスのタスクトレイ アイコンを右クリックし、"XXX の取り外し"をクリックすることで
同様の通知が表示されますが、CM_Request_Device_Eject で同じ呼び出しをした場合、通知が表示されません。
(Windows 8, 8.1 は未確認)
タスクトレイ アイコンから取り外した時のように通知を表示させることはできますか？
Windows 7で実行した時も同様にバルーンが表示されると良いのですが。
Windows 10 Pro 64-bit 20H2
ビルド: 19042.1052
// C++ コンソール プロジェクト
#include <tchar.h>
#include <iostream>
#include <Windows.h>
#include <SetupAPI.h>
#include <cfgmgr32.h>
#pragma comment(lib, "setupapi.lib")
#if defined (UNICODE)
#define tstring std::wstring
#else
#define tstring std::string
#endif
DWORD GetDeviceNumber(HANDLE hVolume);
DEVINST GetDevInst(const DWORD dwDeviceNumber, const int nDriveType, const TCHAR* pszDosDeviceName);
int RemoveDevice(const TCHAR driveLetter, const unsigned nRetryCount = 3, const int nRetryInterval = 3000);
int _tmain()
{
if (__argc < 2) {
return -1;
}
try {
return RemoveDevice(*__targv[1]);
}
catch (int nException) {
return nException;
}
}
DWORD GetDeviceNumber(HANDLE hVolume)
{
STORAGE_DEVICE_NUMBER storageDeviceNumber;
DWORD dwBytesReturned = 0;
DeviceIoControl(hVolume, IOCTL_STORAGE_GET_DEVICE_NUMBER, nullptr, 0, &storageDeviceNumber, sizeof(storageDeviceNumber), &dwBytesReturned, nullptr);
if (dwBytesReturned < 1) {
throw GetLastError();
}
return storageDeviceNumber.DeviceNumber;
}
DEVINST GetDevInst(const DWORD dwDeviceNumber, const int nDriveType, const TCHAR* pszDosDeviceName)
{
GUID guid;
switch (nDriveType) {
case DRIVE_REMOVABLE:
guid = GUID_DEVINTERFACE_DISK;
break;
case DRIVE_FIXED:
guid = GUID_DEVINTERFACE_DISK;
break;
case DRIVE_CDROM:
guid = GUID_DEVINTERFACE_CDROM;
break;
default:
return -1;
}
HDEVINFO hDevInfo = SetupDiGetClassDevs(&guid, 0, nullptr, (DIGCF_PRESENT | DIGCF_DEVICEINTERFACE));
if (hDevInfo == INVALID_HANDLE_VALUE) {
SetupDiDestroyDeviceInfoList(hDevInfo);
throw GetLastError();
}
for (int index = 0; ; ++index) {
SP_DEVICE_INTERFACE_DATA interfaceData{ 0 };
interfaceData.cbSize = sizeof(interfaceData);
interfaceData.InterfaceClassGuid = guid;
if (!SetupDiEnumDeviceInterfaces(hDevInfo, nullptr, &guid, index, &interfaceData)) {
int nError = GetLastError();
SetupDiDestroyDeviceInfoList(hDevInfo);
throw nError;
}
SP_DEVINFO_DATA devInfoData{ 0 };
devInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
devInfoData.ClassGuid = guid;
DWORD dwRequiredSize = 0;
SetupDiGetDeviceInterfaceDetail(hDevInfo, &interfaceData, nullptr, 0, &dwRequiredSize, &devInfoData);
if (dwRequiredSize < 1) {
int nError = GetLastError();
SetupDiDestroyDeviceInfoList(hDevInfo);
throw nError;
}
BYTE* buffer = new BYTE[dwRequiredSize]{ 0 };
SP_DEVICE_INTERFACE_DETAIL_DATA* pDetailData = (SP_DEVICE_INTERFACE_DETAIL_DATA*)buffer;
pDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
if (!SetupDiGetDeviceInterfaceDetail(hDevInfo, &interfaceData, pDetailData, dwRequiredSize, &dwRequiredSize, &devInfoData)) {
int nError = GetLastError();
delete[] buffer;
SetupDiDestroyDeviceInfoList(hDevInfo);
throw nError;
}
HANDLE hVolume = CreateFile(pDetailData->DevicePath, 0, (FILE_SHARE_READ | FILE_SHARE_WRITE), nullptr, OPEN_EXISTING, 0, nullptr);
delete[] buffer;
if (hVolume == INVALID_HANDLE_VALUE) {
continue;
}
DWORD dwDeviceNumber_;
try {
dwDeviceNumber_ = GetDeviceNumber(hVolume);
}
catch (...) {
CloseHandle(hVolume);
SetupDiDestroyDeviceInfoList(hDevInfo);
throw;
}
if (dwDeviceNumber_ == dwDeviceNumber) {
CloseHandle(hVolume);
SetupDiDestroyDeviceInfoList(hDevInfo);
return devInfoData.DevInst;
}
CloseHandle(hVolume);
}
}
int RemoveDevice(const TCHAR driveLetter, const unsigned nRetryCount, const int nRetryInterval)
{
tstring strVolumeName;
strVolumeName += driveLetter;
strVolumeName += _T(':');
tstring strFileName;
strFileName += _T("\\\\.\\");
strFileName += strVolumeName;
HANDLE hVolume = CreateFile(strFileName.c_str(), 0, (FILE_SHARE_READ | FILE_SHARE_WRITE), nullptr, OPEN_EXISTING, 0, nullptr);
if (hVolume == INVALID_HANDLE_VALUE) {
return GetLastError();
}
DWORD dwDeviceNumber;
try {
dwDeviceNumber = GetDeviceNumber(hVolume);
}
catch (...) {
CloseHandle(hVolume);
throw;
}
CloseHandle(hVolume);
tstring strRootPathName;
strRootPathName = strVolumeName;
strRootPathName += _T('\\');
UINT uiDriveType = GetDriveType(strRootPathName.c_str());
TCHAR szDeviceName[MAX_PATH] = { _T('\0') };
DWORD dwResultOfQuery = QueryDosDevice(strVolumeName.c_str(), szDeviceName, MAX_PATH);
if (dwResultOfQuery == 0) {
throw GetLastError();
}
DEVINST devInst;
devInst = GetDevInst(dwDeviceNumber, uiDriveType, szDeviceName);
if (devInst < 0) {
return -1;
}
DEVINST devInstParent = 0;
CM_Get_Parent(&devInstParent, devInst, 0);
int nResult = 0;
for (unsigned i = 0; i < nRetryCount; ++i) {
if (i != 0) {
Sleep(nRetryInterval);
}
TCHAR szVetoName[MAX_PATH]{ _T('\0') };
PNP_VETO_TYPE vetoType;
#if true
nResult = CM_Request_Device_Eject(devInstParent, nullptr, nullptr, 0, 0);
#else
nResult = CM_Request_Device_Eject(devInstParent, &vetoType, szVetoName, MAX_PATH, 0);
#endif
if (nResult == 0) {
return 0;
}
}
return -1;
}
使用例:
C:\>RemoveDevice.exe D
