動作環境

C++ Builder XE4

処理概要

指定の.exeファイルのプロセスIDを調べる (例: notepad.exe)
調べたプロセスIDをファイル出力する (ロギング)

関連

C++ Builder XE4 > プロセス > 指定名のプロセスを起動している数だけTMemoに表示

v0.1

実装

Unit1.h

//---------------------------------------------------------------------------

# ifndef MainH
# define MainH
//---------------------------------------------------------------------------
# include <System.Classes.hpp>
# include <Vcl.Controls.hpp>
# include <Vcl.StdCtrls.hpp>
# include <Vcl.Forms.hpp>
# include <Vcl.ExtCtrls.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:	// IDE で管理されるコンポーネント
	TMemo *Memo1;
	TButton *Button1;
	TEdit *E_exeName;
	TTimer *TMR_logging;
	TCheckBox *CHK_log;
	void __fastcall Button1Click(TObject *Sender);
	void __fastcall FormDestroy(TObject *Sender);
	void __fastcall TMR_loggingTimer(TObject *Sender);
private:	// ユーザー宣言
	int __fastcall ListUpProcess_NameOf(String exename);
	void __fastcall checkProcessID(void);
	TStringList *m_logSL; // ロギング用
public:		// ユーザー宣言
	__fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
# endif

Unit1.cpp

//---------------------------------------------------------------------------

# include <vcl.h>
# pragma hdrstop

# include <Tlhelp32.hpp>
# include "Main.h"
//---------------------------------------------------------------------------
# pragma package(smart_init)
# pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------

static const String kFilename_log = L"ProcLogger.csv"; // ログ用

__fastcall TForm1::TForm1(TComponent* Owner)
	: TForm(Owner)
{
	Memo1->Lines->Clear();

	//
	m_logSL = new TStringList();

	// ログタイマー設定
	TMR_logging->Enabled = false;
	TMR_logging->Interval = 10000; // msec
	TMR_logging->Enabled = true;
}

void __fastcall TForm1::FormDestroy(TObject *Sender)
{
	delete m_logSL;
}

//---------------------------------------------------------------------------

int __fastcall TForm1::ListUpProcess_NameOf(String exename)
{
    HANDLE ListHandle;  // タスクマネージャ > プロセスリスト 用ハンドル
	TProcessEntry32 Pentry; // 個々のプロセス閲覧用

	ListHandle = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);

    if (ListHandle == INVALID_HANDLE_VALUE) {
		return 0;
    }

    Pentry.dwSize = sizeof(TProcessEntry32);
    Process32First(ListHandle, &Pentry);
	while(1) {
		String pnam = Pentry.szExeFile;
		int procId = Pentry.th32ProcessID;
		if (pnam.Pos(exename) > 0) {
			return procId;
		}

		if (Process32Next(ListHandle, &Pentry) == false) {
			break;
		}
	}
	return 0;
}
void __fastcall TForm1::Button1Click(TObject *Sender)
{
	checkProcessID();
}

void __fastcall TForm1::checkProcessID(void)
{
	int procId = ListUpProcess_NameOf(E_exeName->Text);

	String msg;
	msg = Now().FormatString(L"yyyy/mm/dd,hh:nn:ss");
	msg += L",procID," + IntToStr(procId);
	Memo1->Lines->Add(msg);

	m_logSL->Add(msg);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::TMR_loggingTimer(TObject *Sender)
{
	if (CHK_log->Checked) {
		checkProcessID();
		m_logSL->SaveToFile(kFilename_log);
	}
}
//---------------------------------------------------------------------------

動作例

メモ帳(notepad.exe)を起動する
ProcessLoggerでロギング開始 (CHK_logをチェックする)

上記の例では
A. 5816->3344 : メモ帳を再起動
B. 3344->0 : メモ帳を終了