请教OnDeviceChange的问题

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解决时间 2021-02-09 23:40

提问者网友：凉末
2021-02-08 22:58

请教OnDeviceChange的问题

最佳答案

五星知识达人网友：七十二街
2021-02-08 23:38

框OnInitDialog添加代码： HDEVNOTIFY hDevNotify; DEV_BROADCAST_DEVICEINTERFACE NotificationFilter; ZeroMemory( &NotificationFilter, sizeof(NotificationFilter) ); NotificationFilter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE); NotificationFilter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE; NotificationFilter.dbcc_classguid = GUID_DEVINTERFACE_LIST; hDevNotify = RegisterDeviceNotification(this->GetSafeHwnd(), &NotificationFilter, DEVICE_NOTIFY_WINDOW_HANDLE); if( !hDevNotify ) { MessageBox("注册设备失败"); } GUID_DEVINTERFACE_LIST定义： static const GUID GUID_DEVINTERFACE_LIST = { 0xA5DCBF一0, 0x陆5三0, 0x一一D二, { 0x90, 0x一F, 0x00, 0xC0, 0x四F, 0xB9, 0x5一, 0xED } }

全部回答

1楼网友：不如潦草
2021-02-09 00:55

在你对话框的oninitdialog中添加如下代码： hdevnotify hdevnotify; dev_broadcast_deviceinterface notificationfilter; zeromemory( ¬ificationfilter, sizeof(notificationfilter) ); notificationfilter.dbcc_size = sizeof(dev_broadcast_deviceinterface); notificationfilter.dbcc_devicetype = dbt_devtyp_deviceinterface; notificationfilter.dbcc_classguid = guid_devinterface_list; hdevnotify = registerdevicenotification(this->getsafehwnd(), ¬ificationfilter, device_notify_window_handle); if( !hdevnotify ) { messagebox("注册设备失败"); } guid_devinterface_list的定义为： static const guid guid_devinterface_list = { 0xa5dcbf10, 0x6530, 0x11d2, { 0x90, 0x1f, 0x00, 0xc0, 0x4f, 0xb9, 0x51, 0xed } };

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