捕获USB设备插入这个事件，并且可以判断它是个什么设备。

jmcooler 2005-10-28 05:54:45

就是我的程序一运行,不管什么时候只要U盘或移动硬盘一插上,就能把U盘的数据COPY到本地硬盘上.
关键是捕获USB设备插入这个事件，并且可以判断它是个什么设备。

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zhoujiamurong 2006-05-26

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saliors 2005-10-29

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LRESULT CTestUSBDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if(message == WM_DEVICECHANGE) //0x8000,0x8004
{
CString str;
DEV_BROADCAST_HDR* dhr = (DEV_BROADCAST_HDR *)lParam;
switch(wParam)
{
case DBT_CONFIGCHANGECANCELED:
TRACE("DBT_CONFIGCHANGECANCELED");
break;
case DBT_CONFIGCHANGED:
TRACE("DBT_CONFIGCHANGED");
break;
case DBT_DEVICEQUERYREMOVE:
TRACE("DBT_DEVICEQUERYREMOVE");
break;
case DBT_DEVICEQUERYREMOVEFAILED:
TRACE("DBT_DEVICEQUERYREMOVEFAILED");
break;
case DBT_DEVICEREMOVEPENDING:
TRACE("DBT_DEVICEREMOVEPENDING");
break;
case DBT_DEVICETYPESPECIFIC:
TRACE("DBT_DEVICETYPESPECIFIC");
break;
case DBT_QUERYCHANGECONFIG:
TRACE("DBT_QUERYCHANGECONFIG");
break;
case DBT_USERDEFINED:
TRACE("DBT_USERDEFINED");
break;
case DBT_DEVICEARRIVAL:
if(dhr->dbch_devicetype == DBT_DEVTYP_VOLUME)
{
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)dhr;
if(lpdbv->dbcv_flags & DBTF_MEDIA)
{
str.Format("Drive %c 插入", FirstDriveFromMask(lpdbv ->dbcv_unitmask));
//AfxMessageBox(str);
}
else
{
char ch = FirstDriveFromMask(lpdbv ->dbcv_unitmask);
str.Format("%c:\\",ch);
CopyUFile((LPTSTR)(LPCTSTR)str);
}
}
break;
case DBT_DEVICEREMOVECOMPLETE:
if(dhr->dbch_devicetype == DBT_DEVTYP_VOLUME)
{
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)dhr;
if(lpdbv->dbcv_flags & DBTF_MEDIA)
{
str.Format("Drive %c 拔除",FirstDriveFromMask(lpdbv ->dbcv_unitmask));
}
else
{
str.Format("Drive %c 拔除",FirstDriveFromMask(lpdbv ->dbcv_unitmask));
}
//AfxMessageBox(str);
}
break;
default:
break;
}
}
return CDialog::WindowProc(message, wParam, lParam);
}