MFC 无法生成动态 DLL 文件
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【中文标题】MFC 无法生成动态 DLL 文件【英文标题】：MFC Cannot Build Dynamic DLL file 【发布时间】：2014-06-13 07:49:30 【问题描述】：我有 MFC DLL 的问题。我使用 Visual Studio 2010。
这是我的 DLL
#ifdef __cplusplus // If used by C++ code,
extern "C" // we need to export the C interface
#endif
__declspec(dllexport) void __cdecl GetRAMInfo(DWORD& totaRamlPhysical, DWORD& availablephys, DWORD& memoload)
// Lay RAM
MEMORYSTATUS status;
status.dwLength = sizeof(status);
GlobalMemoryStatus( &status ); // lay information of ram
totaRamlPhysical = status.dwTotalPhys; // Tong dung luong RAM vat ly
availablephys = status.dwAvailPhys; // Dung luong RAM vat ly dang duoc su dug
memoload = status.dwMemoryLoad; // phan tram RAM duoc ca he thong su dung
__declspec(dllexport) void __cdecl GetCPUInfo(DWORD& processorArchitect, DWORD& typeProcessor, DWORD& numberProcessor)
SYSTEM_INFO siSysInfo;
GetSystemInfo(&siSysInfo); // lay thong tin cua CPU
processorArchitect = siSysInfo.wProcessorArchitecture;
numberProcessor = siSysInfo.dwNumberOfProcessors;
typeProcessor = siSysInfo.dwProcessorType;
__declspec(dllexport) void __cdecl GetRAMuseandProcessMostUse(CString& namePMU, DWORD& ramUse)
//===========NAME PMU ==========//
DWORD sizeallProcess; // Kich thuoc danh sach ID Process thu duoc
DWORD processNumber; // So luong Process thu duoc
DWORD arrayProcessID[100]; // mang chua danh sach ID Process
EnumProcesses( arrayProcessID, sizeof(arrayProcessID), &sizeallProcess ); // lay danh sach process dang chay
processNumber = sizeallProcess / sizeof(DWORD); // Lay so luong Process thu duoc
namePMU = GetProcess(arrayProcessID, processNumber);
///===========RAM USE==============//
DWORD arrayWorkingSetSize[100];
unsigned int i;
ramUse =0;
for( i =0; i < processNumber;i++)
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, arrayProcessID[i] ); // handle toi 1 process
if (hProcess != NULL)
if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) ) // laays kich thuoc bo nho ma tien trinh do su dung
arrayWorkingSetSize[i] = pmc.WorkingSetSize ;
CloseHandle( hProcess );
for(i =2; i<(processNumber); i++)
if(arrayWorkingSetSize[i] != 3435973836)
ramUse += arrayWorkingSetSize[i];
__declspec(dllexport) void __cdecl GetCPUuseandProcessMostUse(CString& namePMUCPU, DOUBLE& cpuUse)
//DWORD processID = 2412;
FILETIME ftSysIdle, ftSysKernel, ftSysUser;
FILETIME ftProcCreation, ftProcExit, ftProcKernel, ftProcUser;
//=== HANDLE of a PROCESS ==///
DWORD sizeallProcess; // Kich thuoc danh sach ID Process thu duoc
DWORD processNumber; // So luong Process thu duoc
DWORD arrayProcessID[100]; // mang chua danh sach ID Process
EnumProcesses( arrayProcessID, sizeof(arrayProcessID), &sizeallProcess ); // lay danh sach process dang chay
processNumber = sizeallProcess / sizeof(DWORD); // Lay so luong Process thu duoc
bool flagFor = FALSE;
ULONGLONG arrayTotalSys[2][100];
ULONGLONG arrayTotalProc[2][100];
DOUBLE arrayPercent[100];
for(unsigned int a = 0; a<2; a++)
for(unsigned int i=2; i<processNumber; i++)
if(arrayProcessID[i] !=3435973836)
HANDLE hProcess;
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, arrayProcessID[i] );
GetSystemTimes(&ftSysIdle, &ftSysKernel, &ftSysUser);
GetProcessTimes(hProcess, &ftProcCreation, &ftProcExit, &ftProcKernel, &ftProcUser);
arrayTotalSys[a][i] = AddTimes(ftSysKernel, ftSysUser);
arrayTotalProc[a][i] = AddTimes(ftProcKernel, ftProcUser);
Sleep(500);
DOUBLE sumSys =0;
DOUBLE sumProc =0;
for(unsigned int i=2; i<processNumber; i++)
if(arrayProcessID[i] !=3435973836)
/*sumSys += arrayTotalSys[0][i] + arrayTotalSys[1][i];
sumProc += arrayTotalProc[0][i] + arrayTotalProc[1][i];*/
sumSys += arrayTotalSys[1][i] - arrayTotalSys[0][i] ;
sumProc += arrayTotalProc[1][i] - arrayTotalProc[0][i] ;
arrayPercent[i] = (double)((100*sumProc)/sumSys);
int maxindex = 2;
double processMaxPercent = arrayPercent[2];
double sumpercent =0;
for(unsigned int i =2; i<(processNumber); i++)
if(arrayPercent[i] != 3435973836)
if(processMaxPercent < arrayPercent[i] )
processMaxPercent = arrayPercent[i];
maxindex = i;
sumpercent += arrayPercent[i];
cpuUse = sumpercent;
namePMUCPU = GetNameProcessMU(arrayProcessID[maxindex]); // tam thoi lay ten mac djnh la cai nay
__declspec(dllexport) ULONGLONG __cdecl AddTimes(const FILETIME& ftA,const FILETIME& ftB)
LARGE_INTEGER a, b;
a.LowPart = ftA.dwLowDateTime;
a.HighPart = ftA.dwHighDateTime;
b.LowPart = ftB.dwLowDateTime;
b.HighPart = ftB.dwHighDateTime;
return a.QuadPart + b.QuadPart;
__declspec(dllexport) CString __cdecl GetProcess(DWORD arrayProcess[], DWORD numberprocess)
// Working set cua cac process
DWORD arrayWorkingSetSize[100];
unsigned int maxindex;
DWORD processMaxSize;
CString nameProcessMaxSize;
unsigned int i;
for( i =0; i < numberprocess;i++)
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, arrayProcess[i] ); // handle toi 1 process
if (hProcess != NULL)
if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) ) // laays kich thuoc bo nho ma tien trinh do su dung
arrayWorkingSetSize[i] = pmc.WorkingSetSize ;
CloseHandle( hProcess );
// Sap xep, lay ra phan tu co WorkingSetSize lon nhat
maxindex = 2;
processMaxSize = arrayWorkingSetSize[2];
for(i =2; i<(numberprocess - 10); i++)
if(arrayWorkingSetSize[i] != 3435973836)
if(processMaxSize < arrayWorkingSetSize[i] )
processMaxSize = arrayWorkingSetSize[i];
maxindex = i;
// lay ten process co kich thuoc max
nameProcessMaxSize = GetNameProcessMU(arrayProcess[maxindex]);
return nameProcessMaxSize;
__declspec(dllexport) CString __cdecl GetNameProcessMU(DWORD processID)
CString nameProcess;
TCHAR szProcessName[MAX_PATH] = TEXT("<unknown>");
HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
// Get the process name.
if (NULL != hProcess )
HMODULE hMod;
DWORD cbNeeded;
if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod),
&cbNeeded) )
GetModuleBaseName( hProcess, hMod, szProcessName,
sizeof(szProcessName)/sizeof(TCHAR) );
nameProcess = (LPCTSTR)szProcessName; // chuyen kieu
CloseHandle( hProcess );
return nameProcess;
#ifdef __cplusplus
#endif
现在，当我构建它时，它一次又一次地显示错误，以发现它不知道某些功能。
Error 1 error C3861: 'GetProcess': identifier not found c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 104 1 Bkav_btap2_dll
Error 2 error C3861: 'AddTimes': identifier not found c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 154 1 Bkav_btap2_dll
Error 3 error C3861: 'AddTimes': identifier not found c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 155 1 Bkav_btap2_dll
Error 4 error C3861: 'GetNameProcessMU': identifier not found c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 187 1 Bkav_btap2_dll
Warning 5 warning C4190: 'GetProcess' has C-linkage specified, but returns UDT 'ATL::CStringT<BaseType,StringTraits>' which is incompatible with C c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 200 1 Bkav_btap2_dll
Error 6 error C3861: 'GetNameProcessMU': identifier not found c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 234 1 Bkav_btap2_dll
Warning 7 warning C4190: 'GetNameProcessMU' has C-linkage specified, but returns UDT 'ATL::CStringT<BaseType,StringTraits>' which is incompatible with C c:\users\anhnt\documents\visual studio 2010\projects\bkav_btap2_dll\bkav_btap2_dll\bkav_btap2_dll.cpp 239 1 Bkav_btap2_dll
请帮帮我:(。谢谢
P/s：我读了这个主题（***.com/questions/17332327/cannot-build-dll-with-base-class），但它对我不起作用。
【问题讨论】：
您在使用函数时没有在文件顶部正确声明它们。 我在顶部声明了它们，但它仍然不起作用 您似乎也忽略了错误检查。你有时会检查错误，但不管怎样就继续努力。 不，我不是。只是我尝试了一些方法，但它不起作用。 【参考方案1】：您缺少包含所需库的头文件。 （至少）将以下行添加到文件的开头：
#include <windows.h>
编辑：
如果我正在创建一个新的 Visual Studio 项目并将上面的代码粘贴到一个新文件中，如果我在源文件的顶部添加以下行，它将成功构建：
#include "stdafx.h" // Contains the afx default header files (which internally reference Windows.h)
#include <Psapi.h> // for process specific stuff
__declspec(dllexport) CString __cdecl GetProcess(DWORD arrayProcess[], DWORD numberprocess);
__declspec(dllexport) ULONGLONG __cdecl AddTimes(const FILETIME& ftA, const FILETIME& ftB);
__declspec(dllexport) CString __cdecl GetNameProcessMU(DWORD processID);
此外，psapi.lib 必须作为链接器输入添加。
我建议您阅读一些有关构建 C++ 项目、头文件和库的文档。您似乎缺少对 C++ 一些基本概念的理解。
编辑 2 以下是我的文件，它们构建良好。 （使用 MFC 项目向导时，任何丢失的文件都保持原样，它们是可选的）
***.vcproj
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup Label="ProjectConfigurations">
<ProjectConfiguration Include="Debug|Win32">
<Configuration>Debug</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Release|Win32">
<Configuration>Release</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
</ItemGroup>
<PropertyGroup Label="Globals">
<ProjectGuid>D25D3BF5-42FD-4649-BEE4-A7F142367727</ProjectGuid>
<RootNamespace>***</RootNamespace>
<Keyword>MFCDLLProj</Keyword>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<ConfigurationType>DynamicLibrary</ConfigurationType>
<UseDebugLibraries>true</UseDebugLibraries>
<CharacterSet>Unicode</CharacterSet>
<UseOfMfc>Dynamic</UseOfMfc>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
<ConfigurationType>DynamicLibrary</ConfigurationType>
<UseDebugLibraries>false</UseDebugLibraries>
<WholeProgramOptimization>true</WholeProgramOptimization>
<CharacterSet>Unicode</CharacterSet>
<UseOfMfc>Dynamic</UseOfMfc>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
<ImportGroup Label="ExtensionSettings">
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<PropertyGroup Label="UserMacros" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<LinkIncremental>true</LinkIncremental>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<LinkIncremental>false</LinkIncremental>
</PropertyGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>Use</PrecompiledHeader>
<WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>SYSTEMINFO_LIB;WIN32;_WINDOWS;_DEBUG;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<SubSystem>Windows</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<ModuleDefinitionFile>.\***.def</ModuleDefinitionFile>
<AdditionalDependencies>psapi.lib</AdditionalDependencies>
</Link>
<Midl>
<MkTypLibCompatible>false</MkTypLibCompatible>
<PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</Midl>
<ResourceCompile>
<Culture>0x0407</Culture>
<PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ResourceCompile>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level3</WarningLevel>
<PrecompiledHeader>Use</PrecompiledHeader>
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>SYSTEMINFO_LIB;WIN32;_WINDOWS;NDEBUG;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<SubSystem>Windows</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<ModuleDefinitionFile>.\***.def</ModuleDefinitionFile>
</Link>
<Midl>
<MkTypLibCompatible>false</MkTypLibCompatible>
<PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</Midl>
<ResourceCompile>
<Culture>0x0407</Culture>
<PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ResourceCompile>
</ItemDefinitionGroup>
<ItemGroup>
<None Include="ReadMe.txt" />
<None Include="res\***.rc2" />
<None Include="***.def" />
</ItemGroup>
<ItemGroup>
<ClCompile Include="SystemInfo.cpp" />
<ClCompile Include="***.cpp" />
<ClCompile Include="stdafx.cpp">
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="Resource.h" />
<ClInclude Include="***.h" />
<ClInclude Include="stdafx.h" />
<ClInclude Include="SystemInfo.h" />
<ClInclude Include="targetver.h" />
</ItemGroup>
<ItemGroup>
<ResourceCompile Include="***.rc" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>
***.vcproj.filters
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="Quelldateien">
<UniqueIdentifier>4FC737F1-C7A5-4376-A066-2A32D752A2FF</UniqueIdentifier>
<Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
</Filter>
<Filter Include="Headerdateien">
<UniqueIdentifier>93995380-89BD-4b04-88EB-625FBE52EBFB</UniqueIdentifier>
<Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
</Filter>
<Filter Include="Ressourcendateien">
<UniqueIdentifier>67DA6AB6-F800-4c08-8B7A-83BB121AAD01</UniqueIdentifier>
<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
</Filter>
</ItemGroup>
<ItemGroup>
<None Include="ReadMe.txt" />
<None Include="***.def">
<Filter>Quelldateien</Filter>
</None>
<None Include="res\***.rc2">
<Filter>Ressourcendateien</Filter>
</None>
</ItemGroup>
<ItemGroup>
<ClCompile Include="***.cpp">
<Filter>Quelldateien</Filter>
</ClCompile>
<ClCompile Include="stdafx.cpp">
<Filter>Quelldateien</Filter>
</ClCompile>
<ClCompile Include="SystemInfo.cpp">
<Filter>Quelldateien</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="***.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="stdafx.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="targetver.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="Resource.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="SystemInfo.h">
<Filter>Headerdateien</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ResourceCompile Include="***.rc">
<Filter>Ressourcendateien</Filter>
</ResourceCompile>
</ItemGroup>
</Project>
系统信息.cpp
#include "stdafx.h"
#include <Psapi.h>
#include "SystemInfo.h"
SYSTEMINFO_EXPORTS void __cdecl GetRAMInfo(DWORD& totaRamlPhysical, DWORD& availablephys, DWORD& memoload)
// Lay RAM
MEMORYSTATUS status;
status.dwLength = sizeof(status);
GlobalMemoryStatus( &status ); // lay information of ram
totaRamlPhysical = status.dwTotalPhys; // Tong dung luong RAM vat ly
availablephys = status.dwAvailPhys; // Dung luong RAM vat ly dang duoc su dug
memoload = status.dwMemoryLoad; // phan tram RAM duoc ca he thong su dung
SYSTEMINFO_EXPORTS void __cdecl GetCPUInfo(DWORD& processorArchitect, DWORD& typeProcessor, DWORD& numberProcessor)
SYSTEM_INFO siSysInfo;
GetSystemInfo(&siSysInfo); // lay thong tin cua CPU
processorArchitect = siSysInfo.wProcessorArchitecture;
numberProcessor = siSysInfo.dwNumberOfProcessors;
typeProcessor = siSysInfo.dwProcessorType;
SYSTEMINFO_EXPORTS void __cdecl GetRAMuseandProcessMostUse(CString& namePMU, DWORD& ramUse)
//===========NAME PMU ==========//
DWORD sizeallProcess; // Kich thuoc danh sach ID Process thu duoc
DWORD processNumber; // So luong Process thu duoc
DWORD arrayProcessID[100]; // mang chua danh sach ID Process
EnumProcesses( arrayProcessID, sizeof(arrayProcessID), &sizeallProcess ); // lay danh sach process dang chay
processNumber = sizeallProcess / sizeof(DWORD); // Lay so luong Process thu duoc
namePMU = GetProcess(arrayProcessID, processNumber);
///===========RAM USE==============//
DWORD arrayWorkingSetSize[100];
unsigned int i;
ramUse =0;
for( i =0; i < processNumber;i++)
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, arrayProcessID[i] ); // handle toi 1 process
if (hProcess != NULL)
if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) ) // laays kich thuoc bo nho ma tien trinh do su dung
arrayWorkingSetSize[i] = pmc.WorkingSetSize ;
CloseHandle( hProcess );
for(i =2; i<(processNumber); i++)
if(arrayWorkingSetSize[i] != 3435973836)
ramUse += arrayWorkingSetSize[i];
SYSTEMINFO_EXPORTS void __cdecl GetCPUuseandProcessMostUse(CString& namePMUCPU, DOUBLE& cpuUse)
//DWORD processID = 2412;
FILETIME ftSysIdle, ftSysKernel, ftSysUser;
FILETIME ftProcCreation, ftProcExit, ftProcKernel, ftProcUser;
//=== HANDLE of a PROCESS ==///
DWORD sizeallProcess; // Kich thuoc danh sach ID Process thu duoc
DWORD processNumber; // So luong Process thu duoc
DWORD arrayProcessID[100]; // mang chua danh sach ID Process
EnumProcesses( arrayProcessID, sizeof(arrayProcessID), &sizeallProcess ); // lay danh sach process dang chay
processNumber = sizeallProcess / sizeof(DWORD); // Lay so luong Process thu duoc
bool flagFor = FALSE;
ULONGLONG arrayTotalSys[2][100];
ULONGLONG arrayTotalProc[2][100];
DOUBLE arrayPercent[100];
for(unsigned int a = 0; a<2; a++)
for(unsigned int i=2; i<processNumber; i++)
if(arrayProcessID[i] !=3435973836)
HANDLE hProcess;
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, arrayProcessID[i] );
GetSystemTimes(&ftSysIdle, &ftSysKernel, &ftSysUser);
GetProcessTimes(hProcess, &ftProcCreation, &ftProcExit, &ftProcKernel, &ftProcUser);
arrayTotalSys[a][i] = AddTimes(ftSysKernel, ftSysUser);
arrayTotalProc[a][i] = AddTimes(ftProcKernel, ftProcUser);
Sleep(500);
DOUBLE sumSys =0;
DOUBLE sumProc =0;
for(unsigned int i=2; i<processNumber; i++)
if(arrayProcessID[i] !=3435973836)
/*sumSys += arrayTotalSys[0][i] + arrayTotalSys[1][i];
sumProc += arrayTotalProc[0][i] + arrayTotalProc[1][i];*/
sumSys += arrayTotalSys[1][i] - arrayTotalSys[0][i] ;
sumProc += arrayTotalProc[1][i] - arrayTotalProc[0][i] ;
arrayPercent[i] = (double)((100*sumProc)/sumSys);
int maxindex = 2;
double processMaxPercent = arrayPercent[2];
double sumpercent =0;
for(unsigned int i =2; i<(processNumber); i++)
if(arrayPercent[i] != 3435973836)
if(processMaxPercent < arrayPercent[i] )
processMaxPercent = arrayPercent[i];
maxindex = i;
sumpercent += arrayPercent[i];
cpuUse = sumpercent;
namePMUCPU = GetNameProcessMU(arrayProcessID[maxindex]); // tam thoi lay ten mac djnh la cai nay
SYSTEMINFO_EXPORTS ULONGLONG __cdecl AddTimes(const FILETIME& ftA,const FILETIME& ftB)
LARGE_INTEGER a, b;
a.LowPart = ftA.dwLowDateTime;
a.HighPart = ftA.dwHighDateTime;
b.LowPart = ftB.dwLowDateTime;
b.HighPart = ftB.dwHighDateTime;
return a.QuadPart + b.QuadPart;
SYSTEMINFO_EXPORTS CString __cdecl GetProcess(DWORD arrayProcess[], DWORD numberprocess)
// Working set cua cac process
DWORD arrayWorkingSetSize[100];
unsigned int maxindex;
DWORD processMaxSize;
CString nameProcessMaxSize;
unsigned int i;
for( i =0; i < numberprocess;i++)
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, arrayProcess[i] ); // handle toi 1 process
if (hProcess != NULL)
if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) ) // laays kich thuoc bo nho ma tien trinh do su dung
arrayWorkingSetSize[i] = pmc.WorkingSetSize ;
CloseHandle( hProcess );
// Sap xep, lay ra phan tu co WorkingSetSize lon nhat
maxindex = 2;
processMaxSize = arrayWorkingSetSize[2];
for(i =2; i<(numberprocess - 10); i++)
if(arrayWorkingSetSize[i] != 3435973836)
if(processMaxSize < arrayWorkingSetSize[i] )
processMaxSize = arrayWorkingSetSize[i];
maxindex = i;
// lay ten process co kich thuoc max
nameProcessMaxSize = GetNameProcessMU(arrayProcess[maxindex]);
return nameProcessMaxSize;
SYSTEMINFO_EXPORTS CString __cdecl GetNameProcessMU(DWORD processID)
CString nameProcess;
TCHAR szProcessName[MAX_PATH] = TEXT("<unknown>");
HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
// Get the process name.
if (NULL != hProcess )
HMODULE hMod;
DWORD cbNeeded;
if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod),
&cbNeeded) )
GetModuleBaseName( hProcess, hMod, szProcessName,
sizeof(szProcessName)/sizeof(TCHAR) );
nameProcess = (LPCTSTR)szProcessName; // chuyen kieu
CloseHandle( hProcess );
return nameProcess;
系统信息.h
#pragma once
#include <Psapi.h>
SYSTEMINFO_EXPORTS CString __cdecl GetProcess(DWORD arrayProcess[], DWORD numberprocess);
SYSTEMINFO_EXPORTS ULONGLONG __cdecl AddTimes(const FILETIME& ftA, const FILETIME& ftB);
SYSTEMINFO_EXPORTS CString __cdecl GetNameProcessMU(DWORD processID);
这些行添加到 stdafx.h:
#ifdef SYSTEMINFO_LIB
#define SYSTEMINFO_EXPORTS __declspec(dllexport)
#else
#define SYSTEMINFO_EXPORTS __declspec(dllimport)
#endif
（Yaack，我希望在这里发布这么多代码不会违反任何规则。）
【讨论】：
我也尝试过您的解决方案，但它也不起作用。在我看来，如果我知道使用函数调用函数的方式，问题可能会得到解决。例如：函数 GetCPUuseandProcessMostUse 调用 AddTimes。 请帮帮我:(。这个解决方案不适合我:(( 这是我启动 dll:::: 文件 -> 新建 -> 项目 -> MFC dll -> 带有 MFC 静态链接的常规 DLL 的全部步骤。这里有什么问题吗？ :( 不要使用静态链接，而是使用动态链接。根据我的经验，静态链接只会造成麻烦。但除此之外，这是正确的方法。 非常感谢 :) 它只有 3 种 DLL 类型： - 使用共享 MFC DLL 的常规 DLL - 具有 MFC 静态链接的常规 DLL -MFC 扩展 DLL 我可以为动态 dll 选择共享 MFC DLL 吗？跨度>以上是关于MFC 无法生成动态 DLL 文件的主要内容，如果未能解决你的问题，请参考以下文章
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