Qt 获取所有进程、终止某个进程

代码中用到Qt库的地方， 不使用Qt库的可以替换为自己相应的函数

方法一：

1     //Qt开源库， 通过QProcess启动系统命令“tasklist.exe”, 获取正在运行的进程
2     QProcess process;
3     process.start("tasklist.exe");
4     if(process.waitForFinished())
5     {
6         QByteArray result = process.readAll();
7     ｝方法二：

 1     //如果系统找不到Psapi.h
 2     //需要安装microsoft sdk, https://www.microsoft.com/en-us/download/details.aspx?id=8279
 3     #include <Psapi.h>
 4 
 5     unsigned long aProcesses[1024], cbNeeded, cProcesses;
 6     //枚举所有进程ID
 7     if( !EnumProcesses(aProcesses,sizeof(aProcesses),&cbNeeded) )
 8     {
 9         qDebug()<<"text01"; //Qt开源库，输出字符串
10     }
11     QStringList lprocess;   //Qt开源库，字符串列表
12 
13     //计算有多少个进程
14     cProcesses = cbNeeded / sizeof(unsigned long);
15 
16     for(unsigned int i = 0; i < cProcesses; i++)
17     {
18         if(aProcesses[i] == 0)
19         {
20             continue;
21         }
22         //获取已存在的进程对象句柄
23         HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, 0, aProcesses[i]);
24         wchar_t buffer[50];
25         GetModuleBaseName(hProcess, 0, buffer, 50); //获取进程名
26         CloseHandle(hProcess);
27         lprocess << QString::fromWCharArray(buffer); //Qt开源库
28     }
29     qDebug()<<lprocess; //Qt开源库

终止进程：

 1     int KillProcess(LPCSTR processName)
 2     {
 3         PROCESSENTRY32 pe;
 4         DWORD id=0;
 5         HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
 6         pe.dwSize = sizeof(PROCESSENTRY32);
 7         if(!Process32First(hSnapshot,&pe))
 8         {
 9             return 0;
10         }
11 
12         while(1)
13         {
14             pe.dwSize=sizeof(PROCESSENTRY32);
15             if(Process32Next(hSnapshot,&pe)==FALSE)
16             {
17                 break;
18             }
19             //find processName
20             if(wcsicmp(pe.szExeFile, processName)==0)
21             {
22                 id = pe.th32ProcessID;
23                 break;
24             }
25         }
26         CloseHandle(hSnapshot);
27         //if(id == 0)
28         //  return ;
29 
30         //Kill The Process
31         HANDLE hProcess = OpenProcess( PROCESS_ALL_ACCESS, FALSE, id );
32         if (hProcess != NULL)
33         {
34             TerminateProcess(hProcess,0);
35             CloseHandle(hProcess);
36         }
37         return 1;
38     }

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