获得进程的名字和ID(psapi)

 

 

 EnumProcess.h

#pragma  once

#pragma  comment(lib, "psapi.lib") 
#include  < windows.h >


#include  < vector >
#include  < string >   

#include  < psapi.h >




using  std::vector;
using  std:: string ;


struct  ProcessInfro
 {

  public :
      string  ProcessName;
      int  ProcessID;



 };



  class  MyEnumProcess   //
{


public :
    
  vector < ProcessInfro >   GetProcessInfo();
   string  GetProcessName(DWORD processID, UINT index);





};

 

 

EnumProcess.cpp

 

#include  " EnumProcess.h "




// -------------------------------------
// 返回进程名字
vector < ProcessInfro >  MyEnumProcess::GetProcessInfo()
{
   vector < ProcessInfro >  mVectorProcessInfo;


    
    DWORD aProcesses[ 1024 ], cbNeeded, cProcesses;  // cbNeeded表示有多少个进程x8,因为一个id占位,aProcesses是进程ID的数组 
    UINT index;  // 无符号整形
 


    if  ( ! EnumProcesses(aProcesses,  sizeof (aProcesses),  & cbNeeded))  // 遍历进程 cbNeeded为返回了多少byte
   {  
        return   mVectorProcessInfo;
   }
     //  有多少个进程
    cProcesses  =  cbNeeded  /   sizeof (DWORD);  // 除以双字节宽度，没个进程ID占一个DWORD




     for  ( index  =   0 ; index  <  cProcesses; index ++  )
    {
        
     
        ProcessInfro mProcessInfo;
    
        mProcessInfo.ProcessName = GetProcessName(aProcesses[index], index);
        mProcessInfo.ProcessID = aProcesses[index];
      
        mVectorProcessInfo.push_back(mProcessInfo);
    



   }





     return  mVectorProcessInfo;


}
// =========================================================================

string  MyEnumProcess::GetProcessName(DWORD processID, UINT index)
{


          string  strProcess;
  
         char  szProcessName[MAX_PATH];
        HANDLE hProcess  =  OpenProcess( PROCESS_QUERY_INFORMATION  |
                                   PROCESS_VM_READ,
                                   FALSE, processID);    // aProcesses[index]为进程ID

           if  (hProcess)
          {
             HMODULE hMod;
             DWORD cbNeededM;

              if (EnumProcessModules( hProcess,  & hMod,  sizeof (hMod),  & cbNeededM))
             
               {
                 GetModuleBaseNameA(hProcess, hMod, szProcessName,  sizeof (szProcessName));
                
                               
               }
         
          }
  
               // 字符赋给字符串
          strProcess = szProcessName;
           int  i = strProcess.size();
          
              if (i < 100 )
             {

           
             }
              else
             {
                 strProcess = " 名字未知 " ;
             }
        
       
            CloseHandle(hProcess);


          
         
           
            
    
         
      return  strProcess;



}