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<DIV class="left fontsize2">VC實現光驅、軟驅、USB的禁用和啟用</DIV>
<DIV class=fontclear></DIV><BR>
<DIV class=left><SPAN class=span>作者:dlutyuanhongl</SPAN><SPAN
class=span>出處:vckbase</SPAN><SPAN class=span>責任編輯:<A title=向本編輯提問
href="http://comments.yesky.com/t/·½ÖÛ/6,324/1922656.shtml"> 方舟 </A></SPAN><SPAN
class=span>[ 2005-03-16 09:54 ]</SPAN></DIV>
<DIV class=fontclear></DIV>
<DIV class="left fontsize3">由于工作的實際需要,需要對光驅,軟驅,USB的啟用和禁用實現控制</DIV>
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<DIV class=guanggao><SPAN id=ad3></SPAN></DIV>
<DIV class=guanggao><SPAN
id=contentAdv></SPAN></DIV> 由于工作的實際需要,需要對光驅,軟驅,USB的啟用和禁用實現控制。參考大家提供的對網卡禁用的代碼,實現了光驅,軟驅,USB的啟用和禁用。主要實現代碼如下:<BR><BR>
<TABLE borderColor=#ffcc66 width="90%" align=center bgColor=#dadacf border=1>
<TBODY>
<TR>
<TD>// 必要的頭文件和要鏈接的LIB文件<BR>#include <setupapi.h><BR>#include
<shlwapi.h><BR>#pragma comment(lib, "setupapi.lib")<BR>#pragma
comment(lib, "shlwapi.lib") <BR>// <A class=bluekey
href="http://www.yesky.com/key/2942/167942.html" target=_blank>device</A>
<A class=bluekey href="http://www.yesky.com/key/2998/167998.html"
target=_blank>information</A> set(我把它譯為設備信息集)<BR>HDEVINFO hDevInfo =
NULL;<BR><BR>// 出錯信息<BR>void FormatMSG(DWORD dwError, LPTSTR *
lpszMsg)<BR>{ <BR> BOOL bOk = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL,
dwError,<BR> MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg, 0, NULL);<BR><BR> if (!bOk)<BR> {<BR> HMODULE hDll =
LoadLibraryEx(_T("netmsg.dll"),<BR> NULL,<BR> DONT_RESOLVE_DLL_REFERENCES);<BR> if
(NULL != hDll)<BR> {<BR> FormatMessage(FORMAT_MESSAGE_FROM_HMODULE |
<BR> FORMAT_MESSAGE_FROM_SYSTEM,<BR> hDll,<BR> dwError,<BR> MAKELANGID(LANG_CHINESE,
SUBLANG_CHINESE_SIMPLIFIED),<BR> (LPTSTR)lpszMsg,0,
NULL);<BR> FreeLibrary(hDll);<BR> }<BR> }<BR>}<BR><BR>BOOL
ChangeStatus(DWORD NewStatus, DWORD SelectedItem, HDEVINFO
hDevInfo)<BR>{<BR> LPTSTR lpszMsg = NULL;<BR> HCURSOR hCursor =
NULL;<BR> try<BR> {<BR> SP_PROPCHANGE_PARAMS PropChangeParams =
{sizeof(SP_CLASSINSTALL_HEADER)};<BR> SP_DEVINFO_DATA DeviceInfoData =
{sizeof(SP_DEVINFO_DATA)}; <BR><BR> hCursor = SetCursor(LoadCursor(NULL,
IDC_WAIT));<BR><BR> // Get a handle to the Selected Item.<BR> if
(!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem,
&DeviceInfoData))<BR> {<BR> FormatMSG(GetLastError(),
&lpszMsg);<BR> throw lpszMsg;<BR> }<BR><BR> // Set the
PropChangeParams
structure.<BR> PropChangeParams.ClassInstallHeader.InstallFunction =
DIF_PROPERTYCHANGE;<BR> PropChangeParams.Scope =
DICS_FLAG_GLOBAL;<BR> PropChangeParams.StateChange =
NewStatus;<BR><BR> if (!SetupDiSetClassInstallParams(hDevInfo,
&DeviceInfoData, (SP_CLASSINSTALL_HEADER
*)&PropChangeParams,<BR>sizeof(PropChangeParams)))<BR> {<BR> FormatMSG(GetLastError(),
&lpszMsg);<BR> throw lpszMsg;<BR> }<BR><BR> // <A class=bluekey
href="http://www.yesky.com/key/4884/159884.html" target=_blank>Call</A>
the ClassInstaller and perform the change.<BR> if
(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData))<BR> {<BR> FormatMSG(GetLastError(),
&lpszMsg);<BR> throw lpszMsg;<BR> }<BR><BR> SetCursor(hCursor);
<BR> return TRUE;<BR> }<BR> catch (TCHAR *
pszError)<BR> {<BR> SetCursor(hCursor);<BR> ::MessageBox(NULL,pszError,_T("提示"),MB_OK);<BR> if
(NULL != lpszMsg)<BR> {<BR> LocalFree((HLOCAL)lpszMsg);<BR> }
<BR> return FALSE;<BR> } <BR>}<BR><BR>// 這些設備的啟用和禁用主要有此函數實現<BR>//
參數說明,nStatus 可取3個值,-1 :啥也不做<BR>// 0 禁用設備,1啟用設備。<BR>//
nIndex用于控制是對光驅,軟驅還是對USB啟用或禁用<BR>// 也是可取3個值,0 代表軟驅,1 代表光驅<BR>// 2
代表USB<BR>// 譬如要對光驅實現禁用,可以這樣調用此函數<BR>// ControlDisk(0, 1);<BR>BOOL
ControlDisk(int nStatus, int nIndex)<BR>{<BR> if (-1 ==
nStatus)<BR> { <BR> return FALSE;<BR> } <BR><BR> LPTSTR lpszMsg =
NULL;<BR> try<BR> {<BR> TCHAR * GUIDString = NULL;<BR> GUID
guid;<BR> ZeroMemory(&guid,
sizeof(GUID));<BR> switch(nIndex)<BR> {<BR> case 0: // 0
代表軟驅<BR> GUIDString =
_T("4D36E980-E325-11CE-BFC1-08002BE10318");<BR> UuidFromString((unsigned
char *)GUIDString, &guid);<BR> break; <BR> case 1: // 1 代表光驅
<BR> GUIDString =
_T("4D36E965-E325-11CE-BFC1-08002BE10318");<BR> UuidFromString((unsigned
char *)GUIDString, &guid);<BR> break;<BR> case 2: // 2
代表USB<BR> GUIDString =
_T("36FC9E60-C465-11CF-8056-444553540000");<BR> UuidFromString((unsigned
char *)GUIDString, &guid);<BR> break;<BR> }<BR><BR> hDevInfo =
SetupDiGetClassDevs(&guid,NULL,NULL,DIGCF_PRESENT);<BR> if
(INVALID_HANDLE_VALUE == hDevInfo)<BR> {<BR> FormatMSG(GetLastError(),
&lpszMsg);<BR> throw lpszMsg;<BR> }<BR><BR> DWORD
i;<BR> SP_DEVINFO_DATA
DeviceInfoData;<BR> ZeroMemory(&DeviceInfoData,
sizeof(SP_DEVINFO_DATA));<BR> DeviceInfoData.cbSize =
sizeof(SP_DEVINFO_DATA);<BR><BR> for (i = 0;
SetupDiEnumDeviceInfo(hDevInfo, <A class=bluekey
href="http://www.yesky.com/key/497/160497.html" target=_blank>i,</A>
&DeviceInfoData); ++i)<BR> {<BR> if (1 ==
nStatus)<BR> {<BR> StateChange(DICS_ENABLE, i,
hDevInfo);<BR> }<BR> else if (0 ==
nStatus)<BR> {<BR> StateChange(DICS_DISABLE, i, hDevInfo);<BR> }
<BR> }<BR><BR> // 釋放 device information set<BR> return
SetupDiDestroyDeviceInfoList(hDevInfo);<BR> }<BR> catch (TCHAR *
pszError)<BR> {<BR> ::MessageBox(NULL,pszError,_T("提示"),MB_OK);<BR> if
(NULL != lpszMsg)<BR> {<BR> LocalFree((HLOCAL)lpszMsg);<BR> }
<BR> return FALSE;<BR> }<BR> return
FALSE;<BR>}</TD></TR></TBODY></TABLE><BR> 經測試這樣對光驅,軟驅和USB實現禁用沒有問題,但是當禁用過之后如果要對USB實現啟用必須兩次調用ControlDisk(1,
2);這個函數才可,其余的兩個啟用沒什么問題。還有要說的就是我不是用的枚舉所有的設備,然后再過濾(網上的那個禁用網卡的就是這種方法)。<BR><BR> 據我觀察,在注冊表的此項下下:<BR><BR>
<TABLE borderColor=#ffcc66 width="90%" align=center bgColor=#dadacf border=1>
<TBODY>
<TR>
<TD>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\</TD></TR></TBODY></TABLE><BR> 有很多GUID,每個GUID代表一個設備,譬如這個是USB的<BR><BR>
<TABLE borderColor=#ffcc66 width="90%" align=center bgColor=#dadacf border=1>
<TBODY>
<TR>
<TD>{36FC9E60-C465-11CF-8056-444553540000}</TD></TR></TBODY></TABLE><BR> 這個是<A
class=bluekey href="http://www.yesky.com/key/2081/152081.html"
target=_blank>CDROM</A>的<BR><BR>
<TABLE borderColor=#ffcc66 width="90%" align=center bgColor=#dadacf border=1>
<TBODY>
<TR>
<TD>{4D36E965-E325-11CE-BFC1-08002BE10318}</TD></TR></TBODY></TABLE><BR> 等等了。<BR><BR> 這些值你即使把它改為別的GUID,我使用原來的GUID仍然可以實現我的功能。
</DIV>
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