我有关于内存分配的教程代码的一些问题。 下面是一个代码：1）打印虚拟内存数据2）内存分配3）打印虚拟内存数据4）内存释放5）打印虚拟内存数据
我只开始为WinApi学习C ++。 有人可以帮助我的代码？ 我无法编译它。我收到一些错误（如下所示）。 据我所知，这个代码在早期版本的MS Visual Studio中正常工作。 目前我正在与2010年版本。 提前致谢。
#include "stdafx.h" LPVOID myblock[5]; BOOL alloc = FALSE; PCTSTR GetProtectText(MEMORY_BASIC_INFORMATION mbi) { PCTSTR p = "Unknown"; if(mbi.State == MEM_FREE) mbi.Protect = PAGE_NOACCESS; if(mbi.State == MEM_RESERVE) mbi.Protect = mbi.AllocationProtect; switch (mbi.Protect & ~(PAGE_GUARD | PAGE_NOCACHE | PAGE_WRITECOMBINE)) { case PAGE_READONLY: p = "-R--"; break; case PAGE_READWRITE: p = "-RW-"; break; case PAGE_WRITECOPY: p = "-RWC"; break; case PAGE_EXECUTE: p = "E---"; break; case PAGE_EXECUTE_READ: p = "ER--"; break; case PAGE_EXECUTE_READWRITE: p = "ERW-"; break; case PAGE_EXECUTE_WRITECOPY: p = "ERWC"; break; case PAGE_NOACCESS: p = "----"; break; } return(p); } PCTSTR GetMemStorageText(MEMORY_BASIC_INFORMATION mbi) { PCTSTR p = TEXT("Unknown"); switch (mbi.State) { case MEM_FREE: p = "Free"; break; case MEM_RESERVE: p = "Reserve"; break; case MEM_COMMIT: switch (mbi.Type) { case MEM_FREE: p = "Free"; break; case MEM_RESERVE: p = "Reserve"; break; case MEM_IMAGE: p = "Image"; break; case MEM_MAPPED: p = "Mapped"; break; case MEM_PRIVATE: p = "Private"; break; } break; } return(p); } VOID MemoryMap() { DWORD dwProcessId = GetCurrentProcessId(), dwNeeded = 0; HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwProcessId); HMODULE lpModule[40]; //handle to a module LPVOID lpModuleAddress[40]; MODULEINFO ModuleInfo; //structure contains the module load address, size, and entry point. EnumProcessModules(hProcess, lpModule, sizeof(HMODULE)*40, &dwNeeded); dwNeeded /= sizeof(HMODULE); for(UINT i = 0;i < dwNeeded;i++) { GetModuleInformation(hProcess, lpModule[i], &ModuleInfo, sizeof(ModuleInfo)); lpModuleAddress[i] = ModuleInfo.lpBaseOfDll; } MEMORY_BASIC_INFORMATION mbi; //structure contains information about a range of //pages in the virtual address space of a process PVOID lpAddress = NULL; printf(" Address\tBlok Size\tStorage\t\tProtect\n"); CHAR str[255]; while(VirtualQueryEx(hProcess, lpAddress, &mbi, sizeof(mbi))) { if(!(((UINT)lpAddress) % 0x10000)) { printf("0x%p\t\t\t%s", lpAddress, GetMemStorageText(mbi)); for(int i = 0;i < 5;i++) if(myblock[i] == lpAddress && alloc) printf("\n(My Al-location Block)"); for(int i = 0;i < dwNeeded;i++) if(lpAddress == lpModuleAddress[i]) { GetModuleFileName(lpModule[i], str, 255); printf("\n(Image: %s)", str); } printf("\n"); } printf(" 0x%p\t0x%p\t%s\t\t%s\n", lpAddress, (DWORD)mbi.RegionSize, GetMemStorageText(mbi), GetProtectText(mbi)); lpAddress = ((PBYTE)lpAddress + mbi.RegionSize); }; } VOID Allocation() { alloc = TRUE; myblock[0] = VirtualAlloc(NULL, 1024, MEM_RESERVE, PAGE_READONLY); myblock[1] = VirtualAlloc(NULL, 1024*2, MEM_RESERVE, PAGE_READWRITE); myblock[2] = VirtualAlloc(NULL, 1024*8, MEM_RESERVE, PAGE_EXECUTE); myblock[3] = VirtualAlloc(NULL, 1024*16, MEM_RESERVE|MEM_COMMIT, PAGE_EXECUTE_READ); myblock[4] = VirtualAlloc(NULL, 1024*16, MEM_RESERVE|MEM_COMMIT, PAGE_EXECUTE_READWRITE); } VOID Release() { for(int i = 0;i < 5;i++) VirtualFree(myblock[i], 0, MEM_RELEASE); alloc = FALSE; } INT _tmain(INT argc, _TCHAR* argv[]) { printf("\nProcess Virtual Memory Before Allocation Memory:\n"); MemoryMap(); printf("\nProcess Virtual Memory After Allocation Memory:\n"); Allocation(); MemoryMap(); printf("\nProcess Virtual Memory After Release Memory:\n"); Release(); MemoryMap(); getch(); return 0; } 1>------ Build started: Project: VirtMemory, Configuration: Debug Win32 ------ 1>Build started 06.10.2011 23:51:01. 1>InitializeBuildStatus: 1> Touching ".\Debug\VirtMemory.unsuccessfulbuild". 1>ClCompile: 1> VirtMemory.cpp 1>e:\виртуальная память\kod1\virtmemory.cpp(80): warning C4018: '<' : signed/unsigned mismatch 1>e:\виртуальная память\kod1\virtmemory.cpp(123): warning C4996: 'getch': The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _getch. See online help for details. 1> d:\program files\microsoft visual studio 10.0\vc\include\conio.h(128) : see declaration of 'getch' 1>ManifestResourceCompile: 1> All outputs are up-to-date. 1>VirtMemory.obj : error LNK2019: unresolved external symbol _GetModuleInformation@16 referenced in function "void __cdecl MemoryMap(void)" (?MemoryMap@@YAXXZ) 1>VirtMemory.obj : error LNK2019: unresolved external symbol _EnumProcessModules@16 referenced in function "void __cdecl MemoryMap(void)" (?MemoryMap@@YAXXZ) 1>.\Debug\VirtMemory.exe : fatal error LNK1120: 2 unresolved externals 1> 1>Build FAILED. 1> 1>Time Elapsed 00:00:01.43 enter code here