我该如何解决？ Hproc未在此范围内声明？ [英] How do I fix. Hproc not declared in this scope?

问题描述

#include <iostream>
#include <windows.h>
#include "psapi.h"

using namespace std;
DWORD GetModuleBase(HANDLE hProc, string &sModuleName)
{
   HMODULE *hModules;
   char szBuf[50];
   DWORD cModules;
   DWORD dwBase = -1;
   //------

   EnumProcessModules(hProc, hModules, 0, &cModules);
   hModules = new HMODULE[cModules/sizeof(HMODULE)];

   if(EnumProcessModules(hProc, hModules, cModules/sizeof(HMODULE), &cModules)) {
      for(int i = 0; i < cModules/sizeof(HMODULE); i++) {
         if(GetModuleBaseName(hProc, hModules[i], szBuf, sizeof(szBuf))) {
            if(sModuleName.compare(szBuf) == 0) {
               dwBase = (DWORD)hModules[i];
               break;
            }
         }
      }
   }

   delete[] hModules;

   return dwBase;
}

int main()
{
    ---------------->>>>GetModuleBase(hProc, string("winmine.exe"));
}

我的尝试：

What I have tried:

#include <iostream>
#include <windows.h>
#include "psapi.h"

using namespace std;
DWORD GetModuleBase(HANDLE hProc, string &sModuleName)
{
   HMODULE *hModules;
   char szBuf[50];
   DWORD cModules;
   DWORD dwBase = -1;
   //------

   EnumProcessModules(hProc, hModules, 0, &cModules);
   hModules = new HMODULE[cModules/sizeof(HMODULE)];

   if(EnumProcessModules(hProc, hModules, cModules/sizeof(HMODULE), &cModules)) {
      for(int i = 0; i < cModules/sizeof(HMODULE); i++) {
         if(GetModuleBaseName(hProc, hModules[i], szBuf, sizeof(szBuf))) {
            if(sModuleName.compare(szBuf) == 0) {
               dwBase = (DWORD)hModules[i];
               break;
            }
         }
      }
   }

   delete[] hModules;

   return dwBase;
}

int main()
{
    -------------->>>>GetModuleBase(hProc, string("winmine.exe"));
}

推荐答案

那么，hProc在哪里宣布？我看到的唯一一个是GetModuleBase（）的参数，它不在main的范围内。你需要在main中声明它才能在main中访问它。



还有一件事，为了调试我喜欢在看到时使用临时变量重复的表达。我也认为调用变量cModules会产生误导。它实际上是保存所有数据所需的内存量（以字节为单位）。我会这样做：

Well, where is hProc declared? The only one I see is the argument to GetModuleBase() and that is not in main's scope. You need to declare it within main for it to be accessible in main.

One more thing, for the sake of debugging I like to use a temporary variable when I see a repeated expression. I also think calling the variable cModules is misleading. It is actually the amount of memory in bytes required to hold all of the data. I would do the following :

DWORD memoryNeeded = 0;
EnumProcessModules( hProc, hModules, 0, &memoryNeeded );
DWORD moduleCount = memoryNeeded / sizeof( HMODULE );

然后我会在后面的代码中使用变量moduleCount。

and then I would use the variable moduleCount in the later code.

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