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[英]How to check if a Windows executable is running in a Session 0 process?
[英]Check if process is running - Windows
我正在使用QT檢查進程是否正在運行,並且我在msdn站點中使用了相同的代碼。
它在Visual Studio上運行良好,但是我在使其在QT上運行時遇到問題。
這是代碼:
bool matchProcessName( DWORD processID, std::string processName)
{
TCHAR szProcessName[MAX_PATH] = TEXT(L"notepad.exe");
// Get a handle to the process.
HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
// Get the process name.
if (NULL != hProcess )
{
HMODULE hMod;
DWORD cbNeeded;
if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod),
&cbNeeded) )
{
GetModuleBaseName( hProcess, hMod, szProcessName,
sizeof(szProcessName)/sizeof(TCHAR) );
}
}
// Compare process name with your string
bool matchFound = !_tcscmp(szProcessName, processName.c_str() );
// Release the handle to the process.
CloseHandle( hProcess );
return matchFound;
}
我得到的錯誤是這樣的:
錯誤:無法將參數'1'的'TCHAR *'轉換為'const char *'到'int strcmp(const char *,const char *)'
如何在QT上進行這項工作?
非常感謝。
我也嘗試了這段代碼:
DWORD FindProcessId(char* processName)
{
char* p = strrchr(processName, '\\');
if(p)
processName = p+1;
PROCESSENTRY32 processInfo;
processInfo.dwSize = sizeof(processInfo);
HANDLE processesSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
if ( processesSnapshot == INVALID_HANDLE_VALUE )
return 0;
Process32First(processesSnapshot, &processInfo);
if ( !strcmp(processName, processInfo.szExeFile) )
{
CloseHandle(processesSnapshot);
return processInfo.th32ProcessID;
}
while ( Process32Next(processesSnapshot, &processInfo) )
{
if ( !strcmp(processName, processInfo.szExeFile) )
{
CloseHandle(processesSnapshot);
return processInfo.th32ProcessID;
}
}
CloseHandle(processesSnapshot);
return 0;
}
我也遇到錯誤:無法將參數'2'的'WCHAR *'轉換為'const char *'到'int strcmp(const char *,const char *)'
我更願意讓第二種方法起作用!
再次感謝
它與Qt無關。
在更新的代碼中, PROCESSENTRY32.szExeFile
是TCHAR[]
,
即,如果定義了宏_UNCODE
則為WCHAR[]
,否則為char[]
。
因此,您必須將char *processName
傳輸到TCHAR[]
並使用_tcscmp(...)
比較TCHAR[]
。 修改后的代碼:
#include <Windows.h>
#include <TlHelp32.h>
#include <tchar.h>
#include <Psapi.h>
#include <cstring>
#include <string>
#define MIN(x, y) ((x) > (y)) ? (y) : (x)
void cstringToTCHAR(TCHAR *dst, const char *src, size_t l) {
#if defined(_UNICODE) || defined(UNICODE
mbstowcs(dst, src, l);
#else
memcpy(dst, src, l);
#endif
}
bool matchProcessName( DWORD processID, std::string processName)
{
TCHAR szProcessName[MAX_PATH] = _T("notepad.exe");
// Get a handle to the process.
HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
// Get the process name.
if (NULL != hProcess )
{
HMODULE hMod;
DWORD cbNeeded;
if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod),
&cbNeeded) )
{
GetModuleBaseName( hProcess, hMod, szProcessName,
sizeof(szProcessName)/sizeof(TCHAR) );
}
}
// Compare process name with your string
TCHAR systemEncodeProcessName[30];
size_t processNameLen = MIN((processName.size() + 1), 30);
cstringToTCHAR(systemEncodeProcessName, processName.c_str(), processNameLen);
bool matchFound = !_tcscmp(szProcessName, systemEncodeProcessName);
// Release the handle to the process.
CloseHandle( hProcess );
return matchFound;
}
DWORD FindProcessId(char* processName) {
char* p = strrchr(processName, '\\');
if(p) {
processName = p+1;
}
PROCESSENTRY32 processInfo;
processInfo.dwSize = sizeof(processInfo);
HANDLE processesSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
if (processesSnapshot == INVALID_HANDLE_VALUE) {
return 0;
}
//Transfer char array to TCHAR array.
TCHAR systemEncodeProcessName[30];//Maybe need more or dynamic allocation.
size_t processNameLen = MIN((strlen(processName) + 1), 30);
cstringToTCHAR(systemEncodeProcessName, processName, processNameLen);
Process32First(processesSnapshot, &processInfo);
if (!_tcscmp(systemEncodeProcessName, processInfo.szExeFile)) {
CloseHandle(processesSnapshot);
return processInfo.th32ProcessID;
}
while ( Process32Next(processesSnapshot, &processInfo) ) {
if ( !_tcscmp(systemEncodeProcessName, processInfo.szExeFile) ) {
CloseHandle(processesSnapshot);
return processInfo.th32ProcessID;
}
}
CloseHandle(processesSnapshot);
return 0;
}
更新
在Qt creator(3.3.0)中, _UNICODE
宏在Windows平台中看起來像丟失,只需添加
DEFINES += _UNICODE
在您的.pro文件中,然后運行qmake && build。
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