看了一个Usb禁用,启用的程序,可是在VC中编译有下面的错误
c:\microsoft visual studio\vc98\include\setupapi.h(37) : error C2143: syntax error : missing ';' before '*'
c:\microsoft visual studio\vc98\include\setupapi.h(37) : error C2501: 'LPGUID' : missing storage-class or type specifiers
c:\microsoft visual studio\vc98\include\commctrl.h(26) : error C2146: syntax error : missing ';' before identifier 'HRESULT'
c:\microsoft visual studio\vc98\include\commctrl.h(26) : fatal error C1004: unexpected end of file found
Error executing cl.exe.
错误怎么会出现在头文件中呢?究竟错在哪了?达人们帮忙看一下吧,谢谢源程序如下:
// 必要的头文件和要链接的LIB文件
#include <setupapi.h>
#include <shlwapi.h>
#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "shlwapi.lib")
// device information set(我把它译为设备信息集)
HDEVINFO hDevInfo = NULL;// 出错信息
void FormatMSG(DWORD dwError, LPTSTR * lpszMsg)
{
BOOL bOk = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, dwError,
MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED), (LPTSTR)lpszMsg, 0, NULL); if (!bOk)
{
HMODULE hDll = LoadLibraryEx(_T("netmsg.dll"),
NULL,
DONT_RESOLVE_DLL_REFERENCES);
if (NULL != hDll)
{
FormatMessage(FORMAT_MESSAGE_FROM_HMODULE |
FORMAT_MESSAGE_FROM_SYSTEM,
hDll,
dwError,
MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg,0, NULL);
FreeLibrary(hDll);
}
}
}BOOL ChangeStatus(DWORD NewStatus, DWORD SelectedItem, HDEVINFO hDevInfo)
{
LPTSTR lpszMsg = NULL;
HCURSOR hCursor = NULL;
try
{
SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)};
SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)}; hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT)); // Get a handle to the Selected Item.
if (!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem, &DeviceInfoData))
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} // Set the PropChangeParams structure.
PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
PropChangeParams.Scope = DICS_FLAG_GLOBAL;
PropChangeParams.StateChange = NewStatus; if (!SetupDiSetClassInstallParams(hDevInfo, &DeviceInfoData, (SP_CLASSINSTALL_HEADER *)&PropChangeParams,
sizeof(PropChangeParams)))
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} // Call the ClassInstaller and perform the change.
if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData))
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} SetCursor(hCursor);
return TRUE;
}
catch (TCHAR * pszError)
{
SetCursor(hCursor);
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if (NULL != lpszMsg)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
}// 这些设备的启用和禁用主要有此函数实现
// 参数说明,nStatus 可取3个值,-1 :啥也不做
// 0 禁用设备,1启用设备。
// nIndex用于控制是对光驱,软驱还是对USB启用或禁用
// 也是可取3个值,0 代表软驱,1 代表光驱
// 2 代表USB
// 譬如要对光驱实现禁用,可以这样调用此函数
// ControlDisk(0, 1);
BOOL ControlDisk(int nStatus, int nIndex)
{
if (-1 == nStatus)
{
return FALSE;
} LPTSTR lpszMsg = NULL;
try
{
TCHAR * GUIDString = NULL;
GUID guid;
ZeroMemory(&guid, sizeof(GUID));
switch(nIndex)
{
case 0: // 0 代表软驱
GUIDString = _T("4D36E980-E325-11CE-BFC1-08002BE10318");
UuidFromString((unsigned char *)GUIDString, &guid);
break;
case 1: // 1 代表光驱
GUIDString = _T("4D36E965-E325-11CE-BFC1-08002BE10318");
UuidFromString((unsigned char *)GUIDString, &guid);
break;
case 2: // 2 代表USB
GUIDString = _T("36FC9E60-C465-11CF-8056-444553540000");
UuidFromString((unsigned char *)GUIDString, &guid);
break;
} hDevInfo = SetupDiGetClassDevs(&guid,NULL,NULL,DIGCF_PRESENT);
if (INVALID_HANDLE_VALUE == hDevInfo)
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} DWORD i;
SP_DEVINFO_DATA DeviceInfoData;
ZeroMemory(&DeviceInfoData, sizeof(SP_DEVINFO_DATA));
DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA); for (i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); ++i)
{
if (1 == nStatus)
{
StateChange(DICS_ENABLE, i, hDevInfo);
}
else if (0 == nStatus)
{
StateChange(DICS_DISABLE, i, hDevInfo);
}
} // 释放 device information set
return SetupDiDestroyDeviceInfoList(hDevInfo);
}
catch (TCHAR * pszError)
{
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if (NULL != lpszMsg)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
return FALSE;
}
c:\microsoft visual studio\vc98\include\setupapi.h(37) : error C2143: syntax error : missing ';' before '*'
c:\microsoft visual studio\vc98\include\setupapi.h(37) : error C2501: 'LPGUID' : missing storage-class or type specifiers
c:\microsoft visual studio\vc98\include\commctrl.h(26) : error C2146: syntax error : missing ';' before identifier 'HRESULT'
c:\microsoft visual studio\vc98\include\commctrl.h(26) : fatal error C1004: unexpected end of file found
Error executing cl.exe.
错误怎么会出现在头文件中呢?究竟错在哪了?达人们帮忙看一下吧,谢谢源程序如下:
// 必要的头文件和要链接的LIB文件
#include <setupapi.h>
#include <shlwapi.h>
#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "shlwapi.lib")
// device information set(我把它译为设备信息集)
HDEVINFO hDevInfo = NULL;// 出错信息
void FormatMSG(DWORD dwError, LPTSTR * lpszMsg)
{
BOOL bOk = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, dwError,
MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED), (LPTSTR)lpszMsg, 0, NULL); if (!bOk)
{
HMODULE hDll = LoadLibraryEx(_T("netmsg.dll"),
NULL,
DONT_RESOLVE_DLL_REFERENCES);
if (NULL != hDll)
{
FormatMessage(FORMAT_MESSAGE_FROM_HMODULE |
FORMAT_MESSAGE_FROM_SYSTEM,
hDll,
dwError,
MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg,0, NULL);
FreeLibrary(hDll);
}
}
}BOOL ChangeStatus(DWORD NewStatus, DWORD SelectedItem, HDEVINFO hDevInfo)
{
LPTSTR lpszMsg = NULL;
HCURSOR hCursor = NULL;
try
{
SP_PROPCHANGE_PARAMS PropChangeParams = {sizeof(SP_CLASSINSTALL_HEADER)};
SP_DEVINFO_DATA DeviceInfoData = {sizeof(SP_DEVINFO_DATA)}; hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT)); // Get a handle to the Selected Item.
if (!SetupDiEnumDeviceInfo(hDevInfo, SelectedItem, &DeviceInfoData))
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} // Set the PropChangeParams structure.
PropChangeParams.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
PropChangeParams.Scope = DICS_FLAG_GLOBAL;
PropChangeParams.StateChange = NewStatus; if (!SetupDiSetClassInstallParams(hDevInfo, &DeviceInfoData, (SP_CLASSINSTALL_HEADER *)&PropChangeParams,
sizeof(PropChangeParams)))
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} // Call the ClassInstaller and perform the change.
if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData))
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} SetCursor(hCursor);
return TRUE;
}
catch (TCHAR * pszError)
{
SetCursor(hCursor);
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if (NULL != lpszMsg)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
}// 这些设备的启用和禁用主要有此函数实现
// 参数说明,nStatus 可取3个值,-1 :啥也不做
// 0 禁用设备,1启用设备。
// nIndex用于控制是对光驱,软驱还是对USB启用或禁用
// 也是可取3个值,0 代表软驱,1 代表光驱
// 2 代表USB
// 譬如要对光驱实现禁用,可以这样调用此函数
// ControlDisk(0, 1);
BOOL ControlDisk(int nStatus, int nIndex)
{
if (-1 == nStatus)
{
return FALSE;
} LPTSTR lpszMsg = NULL;
try
{
TCHAR * GUIDString = NULL;
GUID guid;
ZeroMemory(&guid, sizeof(GUID));
switch(nIndex)
{
case 0: // 0 代表软驱
GUIDString = _T("4D36E980-E325-11CE-BFC1-08002BE10318");
UuidFromString((unsigned char *)GUIDString, &guid);
break;
case 1: // 1 代表光驱
GUIDString = _T("4D36E965-E325-11CE-BFC1-08002BE10318");
UuidFromString((unsigned char *)GUIDString, &guid);
break;
case 2: // 2 代表USB
GUIDString = _T("36FC9E60-C465-11CF-8056-444553540000");
UuidFromString((unsigned char *)GUIDString, &guid);
break;
} hDevInfo = SetupDiGetClassDevs(&guid,NULL,NULL,DIGCF_PRESENT);
if (INVALID_HANDLE_VALUE == hDevInfo)
{
FormatMSG(GetLastError(), &lpszMsg);
throw lpszMsg;
} DWORD i;
SP_DEVINFO_DATA DeviceInfoData;
ZeroMemory(&DeviceInfoData, sizeof(SP_DEVINFO_DATA));
DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA); for (i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); ++i)
{
if (1 == nStatus)
{
StateChange(DICS_ENABLE, i, hDevInfo);
}
else if (0 == nStatus)
{
StateChange(DICS_DISABLE, i, hDevInfo);
}
} // 释放 device information set
return SetupDiDestroyDeviceInfoList(hDevInfo);
}
catch (TCHAR * pszError)
{
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if (NULL != lpszMsg)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
return FALSE;
}
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// 必要的头文件和要链接的LIB文件
#include<iostream.h>
#include<setupapi.h>
#include<shlwapi.h>
#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "shlwapi.lib")
// device information set(我把它译为设备信息集)
HDEVINFO hDevInfo = NULL;
//出错信息
void FormatMSG(DWORD dwError,LPTSTR *lpszMsg)
{
bool bOK=formatMessage(FORMAT_MESSAGE_FORM_SYSTEM|FORMAT_MESSAGE_ALLOCATE_BUFFER,NULL,dwError,MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),(LPTSTR)lpszMsg,0,NULL);
if(!bOK)
{
HMODULE hDll=LoadLibraryEx(_T("netmsg.dll"),NULL,DONT_RESOLVE_DLL_REFERENCES);
if(hDll=NULL)
{
FormatMessage(FORMAT_MESSAGE_FORM_HMODULE|FORMAT_MESSAGE_FROM_SYSTEM,hDll,dwError,MAKELANGID(LAN_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),(LPTSTR)lpszMsg,0,NULL);
FreeLibrary(hDll);
}
}
}bool ChangeStatus(DWORD NewStatus,DWORD SelectedItem,HDEVINFO hDevInfo)
{
LPTSTR lpszMsg=NULL;
HCURSOR hCursor=NULL;
try
{
SP_PROPCHANGE_PARAMS PropChangeParams={sizeof(SP_CLASSINSTALL_HEADER)};
SP_DEVINFO_DATA DeviceInfoData={sizeof(SP-DEVINFO_DATA)};
hCursor=SetCursor(LoadCursor(NULL,IDC_WAIT));
//GET A handle to the selected item
if (!SetupDiEnumDeviceInfo(hDevInfo,SelectedItem,&DeviceInfoData))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
} //set the PropChangeParams structure
PropChangeParams.ClassInstallHeader.InstallFunction=DIF_PROPERTYCHANGE;
PropChangeParams.Scope=DICS_FLAG_GLOBAL;
PropChangeParams.StateChange=NewStatus;
if(!SetupDiSetClassInstallParams(hDevInfo,&DeviceInfoData,(SP_CLASSINSTALL_HEADER*)&PropChangeParams,sizeof(PropChangeParas)))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
//call the ClassInstaller and perform the change
if(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DevInfoData))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
SetCursor(hCursor);
return TRUE;
}
catch(TCHAR *pszError)
{
SetCursor(hCursor);
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if(lpszMsg!=NULL)
{
LocalFree(HLOCAL)lpszMsg);
}
return FALSE;
}
}
// 这些设备的启用和禁用主要有此函数实现
// 参数说明,nStatus 可取3个值,-1 :啥也不做
// 0 禁用设备,1启用设备。
// nIndex用于控制是对光驱,软驱还是对USB启用或禁用
// 也是可取3个值,0 代表软驱,1 代表光驱
// 2 代表USB
// 譬如要对光驱实现禁用,可以这样调用此函数
// ControlDisk(0, 1);bool ControlDisk(int nState,int nIndex)
{
if(nStatus==-1)
{
return FALSE;
}
LPTSTR lpszMsg=NULL;
try
{
TCHAR *GUIDString=NULL;
GUID guid;
ZeroMemory(&guid,sizeof(GUID));
switch(nIndex)
{
case 0://0代表软驱
break;
case 1://1代表光驱
break;
case 2://2代表USB
GUIDString=_T("36FC9E60-C465-11CF-8056-444553540000")
GuidFormString((unsigned char *)GUIDSsting,&guid)
break;
}
hDevinfo=SetupDiGetClassDevs(&guid,NULL,NULL,DIGCF_PRESENT);
if(INVALID_HANDLE_VALUE==hDevinfo)
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
DWORD i;
SP_DEVINFO_DATA DeviceInfoData;
ZeroMemory(&DeviceInfoData,sizeof(SP_DEVINFO_DATA));
DeviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);for(i=0;SetupDiEnumDeviceInfo(hDevinfo,i,&DeviceInfoData);++i)
{
if(nStatus==1)
{
StateChange(DICS_ENABLE,i,hDevinfo);
}
else if(nStatus==0)
{
StateChange(DICS_DISABLE,i,hDevinfo);
}
}
//释放device information set
return SetupDiDeviceInfoList(hDevinfo);
}
catch(TCHAR *pszError)
{
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if(lpszMsg!=NULL)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
return FALSE;
}
void main()
{
ControlDisk(0,2);
}
#include<windows.h>
#include<tchar.h>
// 必要的头文件和要链接的LIB文件#include<windows.h>
#include<tchar.h>
#include<objbase.h>
#include <initguid.h>
#include<setupapi.h>
#include<shlwapi.h>#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "shlwapi.lib") // device information set(我把它译为设备信息集)
HDEVINFO hDevInfo = NULL;
/*typedef struct _SP_PROPCHANGE_PARAMS {
SP_CLASSINSTALL_HEADER ClassInstallHeader;
DWORD StateChange;
DWORD Scope;
DWORD HwProfile;
} SP_PROPCHANGE_PARAMS, *PSP_PROPCHANGE_PARAMS;//*///出错信息void FormatMSG(DWORD dwError,LPTSTR *lpszMsg)
{
BOOL bOK=FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|
FORMAT_MESSAGE_ALLOCATE_BUFFER,NULL,dwError,
MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg,0,NULL);
if(!bOK)
{
HMODULE hDll=LoadLibraryEx(_T("netmsg.dll"),NULL,DONT_RESOLVE_DLL_REFERENCES);
if(hDll=NULL)
{
FormatMessage(FORMAT_MESSAGE_FROM_HMODULE|
FORMAT_MESSAGE_FROM_SYSTEM,hDll,dwError,
MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg,0,NULL);
FreeLibrary(hDll);
}
}
}BOOL ChangeStatus(DWORD NewStatus,DWORD SelectedItem,HDEVINFO hDevInfo)
{
LPTSTR lpszMsg=NULL;
HCURSOR hCursor=NULL;
try
{
SP_PROPCHANGE_PARAMS PropChangeParams={sizeof(SP_CLASSINSTALL_HEADER)};
SP_DEVINFO_DATA DeviceInfoData={sizeof(SP_DEVINFO_DATA)};
hCursor=SetCursor(LoadCursor(NULL,IDC_WAIT));
//GET A handle to the selected item
if (!SetupDiEnumDeviceInfo(hDevInfo,SelectedItem,&DeviceInfoData))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
} //set the PropChangeParams structure
PropChangeParams.ClassInstallHeader.InstallFunction=DIF_PROPERTYCHANGE;
PropChangeParams.Scope=DICS_FLAG_GLOBAL;
PropChangeParams.StateChange=NewStatus;
if(!SetupDiSetClassInstallParams(hDevInfo,&DeviceInfoData,
(SP_CLASSINSTALL_HEADER*)&PropChangeParams,
sizeof(PropChangeParams)))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
//call the ClassInstaller and perform the change
if(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
SetCursor(hCursor);
return TRUE;
}
catch(TCHAR *pszError)
{
SetCursor(hCursor);
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if(lpszMsg!=NULL)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
}
// 这些设备的启用和禁用主要有此函数实现
// 参数说明,nStatus 可取3个值,-1 :啥也不做
// 0 禁用设备,1启用设备。
// nIndex用于控制是对光驱,软驱还是对USB启用或禁用
// 也是可取3个值,0 代表软驱,1 代表光驱
// 2 代表USB
// 譬如要对光驱实现禁用,可以这样调用此函数
// ControlDisk(0, 1);BOOL ControlDisk(int nStatus,int nIndex)
{
if(nStatus==-1)
{
return FALSE;
}
LPTSTR lpszMsg=NULL;
try
{
TCHAR *GUIDString=NULL;
GUID guid;
ZeroMemory(&guid,sizeof(GUID));
switch(nIndex)
{
case 0://0代表软驱
GUIDString=_T("4D36E980-E325-11CE-BFC1-08002BE10318");
GuidFromString((unsigned char *)GUIDString,&guid);
break;
case 1://1代表光驱
GUIDString=_T("4D36E965-E325-11CE-BFC1-08002BE10318");
GuidFromString((unsigned char *)GUIDString,&guid);
break;
case 2://2代表USB
GUIDString=_T("36FC9E60-C465-11CF-8056-444553540000");
GuidFromString((unsigned char *)GUIDString,&guid);
break;
}
hDevInfo=SetupDiGetClassDevs(&guid,NULL,NULL,DIGCF_PRESENT);
if(INVALID_HANDLE_VALUE==hDevInfo)
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
DWORD i;SP_DEVINFO_DATA DeviceInfoData;
ZeroMemory(&DeviceInfoData,sizeof(SP_DEVINFO_DATA));
DeviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);for(i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&DeviceInfoData);++i)
{
if(nStatus==1)
{
StateChange(DICS_ENABLE,i,hDevInfo);
}
else if(nStatus==0)
{
StateChange(DICS_DISABLE,i,hDevInfo);
}
}
//释放device information set
return SetupDiDestroyDeviceInfoList(hDevInfo);
}
catch(TCHAR *pszError)
{
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if(lpszMsg!=NULL)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
return FALSE;
}
void main()
{
ControlDisk(0,2);
}
// 必要的头文件和要链接的LIB文件#include<windows.h>
#include<tchar.h>
#include<objbase.h>
#include <initguid.h>
#include<setupapi.h>
#include<shlwapi.h>#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "shlwapi.lib") // device information set(我把它译为设备信息集)
HDEVINFO hDevInfo = NULL;
/*typedef struct _SP_PROPCHANGE_PARAMS {
SP_CLASSINSTALL_HEADER ClassInstallHeader;
DWORD StateChange;
DWORD Scope;
DWORD HwProfile;
} SP_PROPCHANGE_PARAMS, *PSP_PROPCHANGE_PARAMS;//*///出错信息void FormatMSG(DWORD dwError,LPTSTR *lpszMsg)
{
BOOL bOK=FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|
FORMAT_MESSAGE_ALLOCATE_BUFFER,NULL,dwError,
MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg,0,NULL);
if(!bOK)
{
HMODULE hDll=LoadLibraryEx(_T("netmsg.dll"),NULL,DONT_RESOLVE_DLL_REFERENCES);
if(hDll=NULL)
{
FormatMessage(FORMAT_MESSAGE_FROM_HMODULE|
FORMAT_MESSAGE_FROM_SYSTEM,hDll,dwError,
MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED),
(LPTSTR)lpszMsg,0,NULL);
FreeLibrary(hDll);
}
}
}BOOL ChangeStatus(DWORD NewStatus,DWORD SelectedItem,HDEVINFO hDevInfo)
{
LPTSTR lpszMsg=NULL;
HCURSOR hCursor=NULL;
try
{
SP_PROPCHANGE_PARAMS PropChangeParams={sizeof(SP_CLASSINSTALL_HEADER)};
SP_DEVINFO_DATA DeviceInfoData={sizeof(SP_DEVINFO_DATA)};
hCursor=SetCursor(LoadCursor(NULL,IDC_WAIT));
//GET A handle to the selected item
if (!SetupDiEnumDeviceInfo(hDevInfo,SelectedItem,&DeviceInfoData))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
} //set the PropChangeParams structure
PropChangeParams.ClassInstallHeader.InstallFunction=DIF_PROPERTYCHANGE;
PropChangeParams.Scope=DICS_FLAG_GLOBAL;
PropChangeParams.StateChange=NewStatus;
if(!SetupDiSetClassInstallParams(hDevInfo,&DeviceInfoData,
(SP_CLASSINSTALL_HEADER*)&PropChangeParams,
sizeof(PropChangeParams)))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
//call the ClassInstaller and perform the change
if(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&DeviceInfoData))
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
SetCursor(hCursor);
return TRUE;
}
catch(TCHAR *pszError)
{
SetCursor(hCursor);
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if(lpszMsg!=NULL)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
}
// 这些设备的启用和禁用主要有此函数实现
// 参数说明,nStatus 可取3个值,-1 :啥也不做
// 0 禁用设备,1启用设备。
// nIndex用于控制是对光驱,软驱还是对USB启用或禁用
// 也是可取3个值,0 代表软驱,1 代表光驱
// 2 代表USB
// 譬如要对光驱实现禁用,可以这样调用此函数
// ControlDisk(0, 1);BOOL ControlDisk(int nStatus,int nIndex)
{
if(nStatus==-1)
{
return FALSE;
}
LPTSTR lpszMsg=NULL;
try
{
TCHAR *GUIDString=NULL;
GUID guid;
ZeroMemory(&guid,sizeof(GUID));
switch(nIndex)
{
case 0://0代表软驱
GUIDString=_T("4D36E980-E325-11CE-BFC1-08002BE10318");
UuidFromString((unsigned char *)GUIDString,&guid);
break;
case 1://1代表光驱
GUIDString=_T("4D36E965-E325-11CE-BFC1-08002BE10318");
UuidFromString((unsigned char *)GUIDString,&guid);
break;
case 2://2代表USB
GUIDString=_T("36FC9E60-C465-11CF-8056-444553540000");
UuidFromString((unsigned char *)GUIDString,&guid);
break;
}
hDevInfo=SetupDiGetClassDevs(&guid,NULL,NULL,DIGCF_PRESENT);
if(INVALID_HANDLE_VALUE==hDevInfo)
{
FormatMSG(GetLastError(),&lpszMsg);
throw lpszMsg;
}
DWORD i;SP_DEVINFO_DATA DeviceInfoData;
ZeroMemory(&DeviceInfoData,sizeof(SP_DEVINFO_DATA));
DeviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);for(i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&DeviceInfoData);++i)
{
if(nStatus==1)
{
StateChange(DICS_ENABLE,i,hDevInfo);
}
else if(nStatus==0)
{
StateChange(DICS_DISABLE,i,hDevInfo);
}
}
//释放device information set
return SetupDiDestroyDeviceInfoList(hDevInfo);
}
catch(TCHAR *pszError)
{
::MessageBox(NULL,pszError,_T("提示"),MB_OK);
if(lpszMsg!=NULL)
{
LocalFree((HLOCAL)lpszMsg);
}
return FALSE;
}
return FALSE;
}
void main()
{
ControlDisk(0,2);
}
LINK : fatal error LNK1104: cannot open file "hid.lib"
我从DDK中拷贝了一个,在工程-添加工程,中加了这个文件,也在工程-设置中,添加了可还是有错误。????怎么回事啊?
Linking...
01.obj : error LNK2001: unresolved external symbol __imp__UuidFromStringA@8
Debug/01.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.01.exe - 2 error(s), 0 warning(s)
哪位可以给解释一下它的实现原理啊,尤其是ChangeStatus这个函数
多谢多谢