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旧 2007-04-12, 11:05 AM   #1
huangyhg
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//EnumProc.cpp
////////////////////////////////////////////////////////////////
// MSDN Magazine -- July 2002
// If this code works, it was written by Paul DiLascia.
// If not, I don't know who wrote it.
// Compiles with Visual Studio 6.0 and Visual Studio .NET
// Runs in Windows XP and probably Windows 2000 too.
//
#include "stdafx.h"
#include "EnumProc.h"
CWindowIterator::CWindowIterator(DWORD nAlloc)
{
assert(nAlloc>0);
m_current = m_count = 0;
m_hwnds = new HWND [nAlloc];
m_nAlloc = nAlloc;
}
CWindowIterator::~CWindowIterator()
{
delete [] m_hwnds;
}
//////////////////
// Move to first top-level window.
// Stuff entire array and return the first HWND.
//
HWND CWindowIterator::First()
{
::EnumWindows(EnumProc, (LPARAM)this);
m_current = 0;
return Next();
}
//////////////////
// Static enumerator passes to virtual fn.
//
BOOL CALLBACK CWindowIterator::EnumProc(HWND hwnd, LPARAM lp)
{
return ((CWindowIterator*)lp)->OnEnumProc(hwnd);
}
//////////////////
// Virtual enumerator proc: add HWND to array if OnWindow is TRUE.
//
BOOL CWindowIterator::OnEnumProc(HWND hwnd)
{
if (OnWindow(hwnd)) {
if (m_count < m_nAlloc)
m_hwnds[m_count++] = hwnd;
}
return TRUE; // keep looking
}
//////////////////
// Main window iterator: special case to iterate main windows of a process.
//
CMainWindowIterator::CMainWindowIterator(DWORD pid, DWORD nAlloc)
: CWindowIterator(nAlloc)
{
m_pid = pid;
}
CMainWindowIterator::~CMainWindowIterator()
{
}
//////////////////
// virtual override: is this window a main window of my process?
//
BOOL CMainWindowIterator::OnWindow(HWND hwnd)
{
if (GetWindowLong(hwnd,GWL_STYLE) & WS_VISIBLE) {
DWORD pidwin;
GetWindowThreadProcessId(hwnd, &pidwin);
if (pidwin==m_pid)
return TRUE;
}
return FALSE;
}
CProcessIterator::CProcessIterator()
{
m_pids = NULL;
}
CProcessIterator::~CProcessIterator()
{
delete [] m_pids;
}
//////////////////
// Get first process.
// Call EnumProcesses to initialize entire array, then return first one.
//
DWORD CProcessIterator::First()
{
m_current = (DWORD)-1;
m_count = 0;
DWORD nalloc = 1024;
do {
delete [] m_pids;
m_pids = new DWORD [nalloc];
if (EnumProcesses(m_pids, nalloc*sizeof(DWORD), &m_count)) {
m_count /= sizeof(DWORD);
m_current = 1; // important: skip IDLE process with pid=0.
}
} while (nalloc <= m_count);
return Next();
}
CProcessModuleIterator::CProcessModuleIterator(DWORD pid)
{
// open the process
m_hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
FALSE, pid);
}
CProcessModuleIterator::~CProcessModuleIterator()
{
CloseHandle(m_hProcess);
delete [] m_hModules;
}
//////////////////
// Get first module in process. Call EnumProcesseModules to
// initialize entire array, then return first module.
//
HMODULE CProcessModuleIterator::First()
{
m_count = 0;
m_current = (DWORD)-1;
m_hModules = NULL;
if (m_hProcess) {
DWORD nalloc = 1024;
do {
delete [] m_hModules;
m_hModules = new HMODULE [nalloc];
if (EnumProcessModules(m_hProcess, m_hModules,
nalloc*sizeof(DWORD), &m_count)) {
m_count /= sizeof(HMODULE);
m_current = 0;
}
} while (nalloc <= m_count);
}
return Next();
}
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旧 2007-04-12, 11:06 AM   #2
huangyhg
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//2)EnumProc.h
////////////////////////////////////////////////////////////////
// MSDN Magazine -- July 2002
// If this code works, it was written by Paul DiLascia.
// If not, I don't know who wrote it.
// Compiles with Visual Studio 6.0 and Visual Studio .NET
// Runs in Windows XP and probably Windows 2000 too.
//
#pragma once
//////////////////
// Iterate the top-level windows. Encapsulates ::EnumWindows.
//
class CWindowIterator {
protected:
HWND* m_hwnds; // array of hwnds for this PID
DWORD m_nAlloc; // size of array
DWORD m_count; // number of HWNDs found
DWORD m_current; // current HWND
static BOOL CALLBACK EnumProc(HWND hwnd, LPARAM lp);
// virtual enumerator
virtual BOOL OnEnumProc(HWND hwnd);
// override to filter different kinds of windows
virtual BOOL OnWindow(HWND hwnd) {
return TRUE;
}
public:
CWindowIterator(DWORD nAlloc=1024);
~CWindowIterator();

DWORD GetCount() { return m_count; }
HWND First();
HWND Next() {
return m_hwnds && m_current < m_count ? m_hwnds[m_current++] : NULL;
}
};
//////////////////
// Iterate the top-level windows in a process.
//
class CMainWindowIterator : public CWindowIterator {
protected:
DWORD m_pid; // process id
virtual BOOL OnWindow(HWND hwnd);
public:
CMainWindowIterator(DWORD pid, DWORD nAlloc=1024);
~CMainWindowIterator();
};
//////////////////
// Process iterator -- iterator over all system processes
// Always skips the first (IDLE) process with PID=0.
//
class CProcessIterator {
protected:
DWORD* m_pids; // array of procssor IDs
DWORD m_count; // size of array
DWORD m_current; // next array item
public:
CProcessIterator();
~CProcessIterator();
DWORD GetCount() { return m_count; }
DWORD First();
DWORD Next() {
return m_pids && m_current < m_count ? m_pids[m_current++] : 0;
}
};
//////////////////
// Iterate the modules in a process. Note that the first module is the
// main EXE that started the process.
//
class CProcessModuleIterator {
protected:
HANDLE m_hProcess; // process handle
HMODULE* m_hModules; // array of module handles
DWORD m_count; // size of array
DWORD m_current; // next module handle
public:
CProcessModuleIterator(DWORD pid);
~CProcessModuleIterator();
HANDLE GetProcessHandle() { return m_hProcess; }
DWORD GetCount() { return m_count; }
HMODULE First();
HMODULE Next() {
return m_hProcess && m_current < m_count ? m_hModules[m_current++] : 0;
}
};
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旧 2007-04-12, 11:07 AM   #3
huangyhg
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//3)lp.cpp
////////////////////////////////////////////////////////////////
// MSDN Magazine -- July 2002
// If this code works, it was written by Paul DiLascia.
// If not, I don't know who wrote it.
// Compiles with Visual Studio 6.0 and Visual Studio .NET
// Runs in Windows XP and probably Windows 2000 too.
//
// lp -- list processes from command line.
// Illustrates how to use the various iterator classes in EnunmProc.h/cpp
//
#include "stdafx.h"
#include "EnumProc.h"
#define tpf _tprintf // to hide ugly underbars
// pre-declare functions
void help();
// global switches
BOOL bClassName=FALSE; // show window classname
BOOL bTitle=FALSE; // show window title
BOOL bBare=FALSE; // no header
// check for switch: / or -
inline BOOL isswitch(TCHAR c) { return c==L'/' || c==L'-'; }
//////////////////
// Main entry point
//
int main(int argc, TCHAR* argv[], TCHAR* envp[])
{
// Parse command line. Switches can come in any order.
//
for (int i=1; i<argc; i++) {
if (isswitch(argv[i][0])) {
for (UINT j=1; j<_tcslen(argv[i]); j++) {
switch(tolower(argv[i][j])) {
case 'c':
bClassName=TRUE;
break;
case 't':
bTitle=TRUE;
break;
case 'b':
bBare=TRUE;
break;
case '?':
default:
help();
return 0;
}
}
} else {
help();
return 0;
}
}
// Iterate over all processes
//
int count=0;
BOOL bFirstModule = TRUE;
CProcessIterator itp;
for (DWORD pid=itp.First(); pid; pid=itp.Next()) {
// Note: first module in CProcessModuleIterator is EXE for this process
//
TCHAR modname[_MAX_PATH];
CProcessModuleIterator itm(pid);
HMODULE hModule = itm.First(); // .EXE
if (hModule) {
GetModuleBaseName(itm.GetProcessHandle(),
hModule, modname, _MAX_PATH);
// Iterate over all top-level windows in process
//
BOOL bFirstWindow = TRUE;
CMainWindowIterator itw(pid);
for (HWND hwnd = itw.First(); hwnd; hwnd=itw.Next()) {
if (bFirstModule) {
if (!bBare) {
tpf(_T("PID %-13s%-8s %s%s%s\n"),_T("Module"),_T("HWND"),
bClassName ? _T("class name") : _T(""),
bClassName && bTitle ? _T("/") : _T(""),
bTitle ? _T("title") : _T(""));
tpf(_T("---- ------------ -------- ----------------\n"));
}
bFirstModule = FALSE;
}
if (bFirstWindow) {
tpf(_T("%04x %-13s"), pid, modname);
bFirstWindow = FALSE;
} else {
tpf(_T("%18s"),_T(" "));
}
char classname[256],title[256];
GetClassName(hwnd,classname,sizeof(classname));
GetWindowText(hwnd,title,sizeof(title));
tpf(_T("%08x %s %s\n"), hwnd,
bClassName ? classname : _T(""),
bTitle ? title : _T(""));
}
bFirstWindow || count++;
}
}
if (!bBare) {
tpf(_T("----\n"));
tpf(_T("%d processes found.\n"),count);
}
return 0;
}
void help()
{
tpf(_T("lp: List top-level proceses.\n"));
tpf(_T(" Copyright 2002 Paul DiLascia.\n\n"));
tpf(_T("Format: lp [/bct?]\n\n"));
tpf(_T("Options:\n"));
tpf(_T(" /b(are) no header\n"));
tpf(_T(" /c(lass) show window class names\n"));
tpf(_T(" /t(itle) show window titles\n"));
tpf(_T("\n"));
}
此帖于 2007-04-12 11:15 AM 被 huangyhg 编辑.
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