Delphi实现获取进程列表及相关信息的实例
前言：
闲着没事，看着任务管理器好玩，查资料先简单实现一下，代码中没有加入获取CPU占用率的代码，这个代码网上很多，只是不喜欢那种写法，这里就不写了。以后继续完善，对于System Process和System的信息还没法获得，那位兄弟知道可以提个醒。
代码如下
unit Main;
interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs,TlHelp32, StdCtrls, ComCtrls,psAPI;
type PTokenUser = ^TTokenUser;
_TOKEN_USER = record User: TSIDAndAttributes;
end;
TTokenUser = _TOKEN_USER;
TForm1 = class(TForm) btn_Get: TButton;
Lv_Process: TListView;
procedure btn_GetClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
private {
Private declarations }
function GetMemUsedText(memsize:Cardinal):string;
function GetProcessPriority(priority:Cardinal):string;
function GetCupUsedPercent(hprocess:THandle):string;
function GetProcessUser(hprocess:THandle):string;
public {
Public declarations }
end;
var Form1: TForm1;
implementation {
$R *.dfm}
{
作用：提权到Debug，为了在Vista和Win7下读取系统信息，运行时需要以管理员身份运行 }
function PromoteProcessPrivilege(Processhandle:Thandle;
Token_Name:pchar):boolean;
var Token:cardinal;
TokenPri:_TOKEN_PRIVILEGES;
Luid:int64;
i:DWORD;
begin Result:=false;
//打开令牌 if OpenProcessToken(Processhandle,TOKEN_ADJUST_PRIVILEGES,Token) then begin //看系统权限的特权值 if LookupPrivilegeValue(nil,Token_Name,Luid) then begin TokenPri.PrivilegeCount:=1;
TokenPri.Privileges[0].Attributes:=SE_PRIVILEGE_ENABLED;
TokenPri.Privileges[0].Luid:=Luid;
i:=0;
//提权 if AdjustTokenPrivileges(Token,false,TokenPri,sizeof(TokenPri),nil,i) then Result:=true;
end;
end;
CloseHandle(Token);
end;
function AddFileTimes(KernelTime, UserTime: TFileTime): TDateTime;
var SysTimeK, SysTimeU: TSystemTime;
begin FileTimeToSystemTime(KernelTime, SysTimeK);
FileTimeToSystemTime(UserTime, SysTimeU);
Result :=SystemTimeToDateTime(SysTimeK)+SystemTimeToDateTime(SysTimeU);
end;
//获取CPU时间 function GetProcCPUTime(procID:THandle): TDateTime;
var CreationTime, ExitTime, KernelTime, UserTime: TFileTime;
begin GetProcessTimes(procID, CreationTime, ExitTime, KernelTime,UserTime);
Result := AddFileTimes(KernelTime, UserTime);
end;
procedure TForm1.btn_GetClick(Sender: TObject);
var hSnapShot,hProcess,hModel:THandle;
pEntry:TProcessEntry32;
find:Boolean;
item:TListItem;
//内存信息 pPMC:PPROCESS_MEMORY_COUNTERS;
pPMCSize,ProcessPriority:Cardinal;
n:DWORD;
fName:array [0..MAX_PATH-1] of char;
begin //创建进程快照 hSnapShot := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
pEntry.dwSize := SizeOf(pEntry);
//第一个进程 find := Process32First(hSnapShot,pEntry);
while find do begin item := Lv_Process.Items.Add;
//进程名 item.Caption := pEntry.szExeFile;
//进程ID item.SubItems.Add(IntToStr(pEntry.th32ProcessID));
pPMCSize := SizeOf(PROCESS_MEMORY_COUNTERS);
GetMem(pPMC,pPMCSize);
pPMC.cb := pPMCSize;
//打开进程，增加PROCESS_VM_READ权限，以便后面获取完整路径时使用 hProcess := OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ,False,pEntry.th32ProcessID);
//获取内存信息 if GetProcessMemoryInfo(hProcess,pPMC,pPMCSize) then begin //取得进程的用户 item.SubItems.Add(GetProcessUser(hProcess));
//内存使用 item.SubItems.Add(GetMemUsedText(pPMC.WorkingSetSize));
//内存峰值 item.SubItems.Add(GetMemUsedText(pPMC.PeakWorkingSetSize));
//CPU时间 item.SubItems.Add(FormatDateTime('hh:mm:ss',GetProcCPUTime(hProcess)));
//获取优先级 ProcessPriority := GetPriorityClass(hProcess);
item.SubItems.Add(GetProcessPriority(ProcessPriority));
//根据进程句柄找到模块句柄 ENumProcessModules(hProcess,@hModel,SizeOf(hModel),n);
//取得完整路径 GetModuleFileNameEx(hProcess,hModel,fName,Length(fName));
item.SubItems.Add(fName);
end;
FreeMem(pPMC);
CloseHandle(hProcess);
find := Process32Next(hSnapShot,pEntry);
end;
end;
function TForm1.GetCupUsedPercent(hprocess: THandle): string;
begin end;
function TForm1.GetMemUsedText(memsize: Cardinal): string;
begin Result := IntToStr(memsize div 1024) + ' K';
end;
function TForm1.GetProcessPriority(priority: Cardinal): string;
begin case priority of IDLE_PRIORITY_CLASS: Result := '低';
NORMAL_PRIORITY_CLASS: Result := '普通';
HIGH_PRIORITY_CLASS: Result := '高';
REALTIME_PRIORITY_CLASS: Result := '实时';
end;
end;
//获取进程的所属用户 function TForm1.GetProcessUser(hprocess: THandle): string;
var hToken:THandle;
dwSize,dwUserSize,dwDomainSize:DWORD;
pUser:PTokenUser;
szUserName, szDomainName: array of Char;
peUse: SID_NAME_USE;
begin //打开权限 if not OpenProcessToken(hprocess,TOKEN_QUERY,hToken) then Exit;
//获取令牌信息，这里第三个参数使用了nil，是先返回实际大小dwSize，然后根据这个大小去分配内存 GetTokenInformation(hToken,TokenUser,nil,0,dwSize);
pUser := nil;
//分配空间 ReallocMem(pUser,dwSize);
dwUserSize := 0;
dwDomainSize := 0;
//获取信息 if not GetTokenInformation(hToken,TokenUser,pUser,dwSize,dwSize) then Exit;
//查找用户信息，先返回用户名和域名的大小，当然你也可以一次性得到，即不使用动态数组 LookupAccountSid(nil,pUser.User.Sid,nil,dwUserSize,nil,dwDomainSize,peUse);
if (dwUserSize <> 0) and (dwDomainSize <> 0) then begin //分配长度 SetLength(szUserName,dwUserSize);
SetLength(szDomainName,dwDomainSize);
//再次，获取用户名和域名 LookupAccountSid(nil,pUser.User.Sid,PChar(szUserName),dwUserSize,PChar(szDomainName),dwDomainSize,peUse);
end;
Result := PChar(szUserName)+'/'+PChar(szDomainName);
CloseHandle(hToken);
FreeMem(pUser);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin PromoteProcessPrivilege(GetCurrentProcess,'SeDebugPrivilege');
end;
end.
运行图片
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