csdn技术中心 实战deviceiocontrol 之二：获取软盘-硬盘-光盘的参数.mht

来自「DeviceIOControl实战演示及源代码」· MHT 代码 · 共 1,381 行 · 第 1/5 页

<SPAN class=3Drem>// =B2=BB=D0=E8=D2=AA=CA=E4=C8=EB=CA=FD=BE=DD</SPAN>
            pmt, MEDIA_INFO_SIZE,               <SPAN class=3Drem>// =
=CA=E4=B3=F6=CA=FD=BE=DD=BB=BA=B3=E5=C7=F8</SPAN>
            &amp;dwOutBytes,                        <SPAN class=3Drem>// =
=CA=E4=B3=F6=CA=FD=BE=DD=B3=A4=B6=C8</SPAN>
            (LPOVERLAPPED)NULL);                <SPAN class=3Drem>// =
=D3=C3=CD=AC=B2=BDI/O</SPAN>
 =20
        <SPAN class=3Dkey>if</SPAN> (bResult)
        {
            <SPAN class=3Drem>// =
=D7=A2=D2=E2=B5=BD=BD=E1=B9=B9DEVICE_MEDIA_INFO=CA=C7=D4=DA=BD=E1=B9=B9DI=
SK_GEOMETRY=B5=C4=BB=F9=B4=A1=C9=CF=C0=A9=B3=E4=B5=C4
            // =
=CE=AA=BC=F2=BB=AF=B3=CC=D0=F2=A3=AC=D3=C3memcpy=B4=FA=CC=E6=C8=E7=CF=C2=B6=
=E0=CC=F5=B8=B3=D6=B5=D3=EF=BE=E4=A3=BA
            // pdg-&gt;MediaType =3D =
(MEDIA_TYPE)pmt-&gt;MediaInfo[0].DeviceSpecific.DiskInfo.MediaType;
            // pdg-&gt;Cylinders =3D =
pmt-&gt;MediaInfo[0].DeviceSpecific.DiskInfo.Cylinders;
            // pdg-&gt;TracksPerCylinder =3D =
pmt-&gt;MediaInfo[0].DeviceSpecific.DiskInfo.TracksPerCylinder;
            // ... ...</SPAN>
            ::memcpy(pdg, pmt-&gt;MediaInfo, <SPAN =
class=3Dkey>sizeof</SPAN>(DISK_GEOMETRY));
        }
 =20
        <SPAN class=3Dkey>delete</SPAN> pmt;
    }
 =20
    <SPAN class=3Drem>// =B9=D8=B1=D5=C9=E8=B1=B8=BE=E4=B1=FA</SPAN>
    ::CloseHandle(hDevice);
 =20
    <SPAN class=3Dkey>return</SPAN> (bResult);
}
</CODE></PRE>
            <P=20
            =
class=3Dbhw98>=C8=BB=BA=F3=A3=AC=D4=DAToolbar=B5=C4IDR_MAINFRAME=C9=CF=CC=
=ED=BC=D3=D2=BB=B8=F6=B0=B4=C5=A5=A3=ACID=CE=AAID_GET_DISK_GEOMETRY=A1=A3=
=B4=F2=BF=AAClassWizard=A3=AC=D4=DADiskGeometryView=D6=D0=20

            <P=20
            =
class=3Dbhw98>=CC=ED=BC=D3ID_GET_DISK_GEOMETRY=B5=C4=D3=B3=C9=E4=BA=AF=CA=
=FDOnGetDiskGeometry=A1=A3=B4=F2=BF=AADiskGeometryView.cpp=A3=AC=B0=FC=BA=
=AC=CD=B7=CE=C4=BC=FEGetDiskGeometry.h=A1=A3=20

            <P =
class=3Dbhw98>=D4=DAOnGetDiskGeometry=D6=D0=A3=AC=CC=ED=BC=D3=D2=D4=CF=C2=
=B4=FA=C2=EB <PRE class=3Dbhw98><CODE class=3Dbhw98>    <SPAN =
class=3Dkey>const char</SPAN> *szDevName[]=3D
    {
        <SPAN class=3Dstr>"\\\\.\\A:"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\B:"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\PhysicalDrive0"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\PhysicalDrive1"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\PhysicalDrive2"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\PhysicalDrive3"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\Cdrom0"</SPAN>,
        <SPAN class=3Dstr>"\\\\.\\Cdrom1"</SPAN>,
    };
    DISK_GEOMETRY dg;
    ULONGLONG DiskSize;
    BOOL bResult;
    CString strMsg;
    CString strTmp;
 =20
    <SPAN class=3Dkey>for</SPAN> (<SPAN class=3Dkey>int</SPAN> i =3D =
<SPAN class=3Dnum>0</SPAN>; i &lt; <SPAN =
class=3Dkey>sizeof</SPAN>(szDevName)/<SPAN =
class=3Dkey>sizeof</SPAN>(<SPAN class=3Dkey>char</SPAN>*); i++)
    {
        bResult =3D GetDriveGeometry(szDevName[i], &amp;dg);
 =20
        strTmp.Format(<SPAN class=3Dstr>"\r\n%s  result =3D =
%s\r\n"</SPAN>, szDevName[i], bResult ? <SPAN =
class=3Dstr>"success"</SPAN> : <SPAN class=3Dstr>"failure"</SPAN>);
        strMsg+=3DstrTmp;
 =20
        <SPAN class=3Dkey>if</SPAN> (!bResult) <SPAN =
class=3Dkey>continue</SPAN>;
 =20
        strTmp.Format(<SPAN class=3Dstr>"    Media Type =3D =
%d\r\n"</SPAN>, dg.MediaType);
        strMsg+=3DstrTmp;
 =20
        strTmp.Format(<SPAN class=3Dstr>"    Cylinders =3D =
%I64d\r\n"</SPAN>, dg.Cylinders);
        strMsg+=3DstrTmp;
 =20
        strTmp.Format(<SPAN class=3Dstr>"    Tracks per cylinder =3D =
%ld\r\n"</SPAN>, (ULONG) dg.TracksPerCylinder);
        strMsg+=3DstrTmp;
 =20
        strTmp.Format(<SPAN class=3Dstr>"    Sectors per track =3D =
%ld\r\n"</SPAN>, (ULONG) dg.SectorsPerTrack);
        strMsg+=3DstrTmp;
 =20
        strTmp.Format(<SPAN class=3Dstr>"    Bytes per sector =3D =
%ld\r\n"</SPAN>, (ULONG) dg.BytesPerSector);
        strMsg+=3DstrTmp;
 =20
        DiskSize =3D dg.Cylinders.QuadPart * (ULONG)dg.TracksPerCylinder =
*
            (ULONG)dg.SectorsPerTrack * (ULONG)dg.BytesPerSector;
        strTmp.Format(<SPAN class=3Dstr>"    Disk size =3D %I64d (Bytes) =
=3D %I64d (Mb)\r\n"</SPAN>, DiskSize, DiskSize / (<SPAN =
class=3Dnum>1024</SPAN> * <SPAN class=3Dnum>1024</SPAN>));
        strMsg+=3DstrTmp;
    }
 =20
    CEdit&amp; Edit =3D GetEditCtrl();
 =20
    Edit.SetWindowText(strMsg);
</CODE></PRE>
            <P =
class=3Dbhw98>=D7=EE=BA=F3=A3=AC=D7=EE=BA=F3=B8=C9=CA=B2=C3=B4=C4=D8=A3=BF=
=B1=E0=D2=EB=A3=AC=D4=CB=D0=D0......=20
            <H2 class=3Dbhw98>[=CF=E0=B9=D8=D7=CA=D4=B4]</H2>
            <LI class=3Dbhw98>=B1=BE=CE=C4Demo=D4=B4=C2=EB=A3=BA<A=20
            =
href=3D"http://www.csdn.net/develop/author/bhw98/DiskGeometry.zip">DiskGe=
ometry.zip</A>=20
            (21KB)=20
            <LI class=3Dbhw98>bhw98=B5=C4=D7=A8=C0=B8=A3=BA<A=20
            =
href=3D"http://www.csdn.net/develop/author/netauthor/bhw98/">http://www.c=
sdn.net/develop/author/netauthor/bhw98/</A>=20

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