使用给定的过程ID获取过程描述
我有一个程序,可以用Toolhelp API列举所有进程。使用我的Sysinternals Process Explorer,我也可以看到所有过程的描述。此描述来自可执行文件吗?我如何获得它的名字?
这是我目前列举流程的代码:
#include <Windows.h>
#include <TlHelp32.h>
#include <iostream>
#include <vector>
#include <system_error>
#include <memory>
using namespace std;
vector<PROCESSENTRY32W> getAllProcesses();
int main()
{
for( PROCESSENTRY32W &pe : getAllProcesses() )
wcout << pe.szExeFile << endl;
}
using XHANDLE = unique_ptr<void, decltype([]( HANDLE h ) { h && h != INVALID_HANDLE_VALUE && CloseHandle( h ); })>;
vector<PROCESSENTRY32W> getAllProcesses()
{
auto throwSysErr = []() { throw system_error( (int)GetLastError(), system_category(), "error enumerating processes" ); };
vector<PROCESSENTRY32W> processes;
XHANDLE xhSnapshot( CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ) );
if( xhSnapshot.get() == INVALID_HANDLE_VALUE )
throwSysErr();;
PROCESSENTRY32W pe;
pe.dwSize = sizeof pe;
if( !Process32FirstW( xhSnapshot.get(), &pe ) )
throwSysErr();
for( ; ; )
{
processes.emplace_back( pe );
pe.dwSize = sizeof pe;
if( !Process32NextW( xhSnapshot.get(), &pe ) )
if( GetLastError() == ERROR_NO_MORE_FILES )
break;
else
throwSysErr();
}
return processes;
}
I've got a program that enumerates all processes with the Toolhelp API. With my Sysinternals Process Explorer I also can see a description of all processes. Is this description coming from the executable ? How do I get its name ?
That's my current code to enumerate the processes:
#include <Windows.h>
#include <TlHelp32.h>
#include <iostream>
#include <vector>
#include <system_error>
#include <memory>
using namespace std;
vector<PROCESSENTRY32W> getAllProcesses();
int main()
{
for( PROCESSENTRY32W &pe : getAllProcesses() )
wcout << pe.szExeFile << endl;
}
using XHANDLE = unique_ptr<void, decltype([]( HANDLE h ) { h && h != INVALID_HANDLE_VALUE && CloseHandle( h ); })>;
vector<PROCESSENTRY32W> getAllProcesses()
{
auto throwSysErr = []() { throw system_error( (int)GetLastError(), system_category(), "error enumerating processes" ); };
vector<PROCESSENTRY32W> processes;
XHANDLE xhSnapshot( CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ) );
if( xhSnapshot.get() == INVALID_HANDLE_VALUE )
throwSysErr();;
PROCESSENTRY32W pe;
pe.dwSize = sizeof pe;
if( !Process32FirstW( xhSnapshot.get(), &pe ) )
throwSysErr();
for( ; ; )
{
processes.emplace_back( pe );
pe.dwSize = sizeof pe;
if( !Process32NextW( xhSnapshot.get(), &pe ) )
if( GetLastError() == ERROR_NO_MORE_FILES )
break;
else
throwSysErr();
}
return processes;
}
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@RemyLebeau的方式与代码实现的方式,该方法由 verqueryvaluea 文档样本。 AS
@RemyLebeau 's way with code implement which is adapted from VerQueryValueA document sample. And as OpenProcess states,