Retrieving a Process Handle by Process Name in C
To retrieve the handle of a process by its name, we can leverage the CreateToolhelp32Snapshot function to obtain a snapshot of the system's processes. This function provides access to information about running processes, including their process names.
The following code snippet demonstrates how to use CreateToolhelp32Snapshot and Process32Next to search for a process by name and retrieve its handle:
#include <cstdio> #include <windows.h> #include <tlhelp32.h> int main(int, char *[]) { PROCESSENTRY32 entry; entry.dwSize = sizeof(PROCESSENTRY32); HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if (Process32First(snapshot, &entry) == TRUE) { while (Process32Next(snapshot, &entry) == TRUE) { if (stricmp(entry.szExeFile, "target.exe") == 0) { HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, entry.th32ProcessID); // Do stuff with the process... CloseHandle(hProcess); } } } CloseHandle(snapshot); return 0; }</tlhelp32.h></windows.h></cstdio>
If you require PROCESS_ALL_ACCESS access, you may need to temporarily enable the SE_DEBUG_NAME privilege. Here's how you can do that:
#include <cstdio> #include <windows.h> #include <tlhelp32.h> void EnableDebugPriv() { HANDLE hToken; LUID luid; TOKEN_PRIVILEGES tkp; OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &luid); tkp.PrivilegeCount = 1; tkp.Privileges[0].Luid = luid; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; AdjustTokenPrivileges(hToken, false, &tkp, sizeof(tkp), NULL, NULL); CloseHandle(hToken); } int main(int, char *[]) { EnableDebugPriv(); // ... (Code from previous example)... return 0; }</tlhelp32.h></windows.h></cstdio>
The above is the detailed content of How to Retrieve a Process Handle by its Name in C ?. For more information, please follow other related articles on the PHP Chinese website!

This article explains the C Standard Template Library (STL), focusing on its core components: containers, iterators, algorithms, and functors. It details how these interact to enable generic programming, improving code efficiency and readability t

This article details efficient STL algorithm usage in C . It emphasizes data structure choice (vectors vs. lists), algorithm complexity analysis (e.g., std::sort vs. std::partial_sort), iterator usage, and parallel execution. Common pitfalls like

The article discusses dynamic dispatch in C , its performance costs, and optimization strategies. It highlights scenarios where dynamic dispatch impacts performance and compares it with static dispatch, emphasizing trade-offs between performance and

C 20 ranges enhance data manipulation with expressiveness, composability, and efficiency. They simplify complex transformations and integrate into existing codebases for better performance and maintainability.

This article details effective exception handling in C , covering try, catch, and throw mechanics. It emphasizes best practices like RAII, avoiding unnecessary catch blocks, and logging exceptions for robust code. The article also addresses perf

The article discusses using move semantics in C to enhance performance by avoiding unnecessary copying. It covers implementing move constructors and assignment operators, using std::move, and identifies key scenarios and pitfalls for effective appl

Article discusses effective use of rvalue references in C for move semantics, perfect forwarding, and resource management, highlighting best practices and performance improvements.(159 characters)

C memory management uses new, delete, and smart pointers. The article discusses manual vs. automated management and how smart pointers prevent memory leaks.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

SublimeText3 Linux new version
SublimeText3 Linux latest version

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 English version
Recommended: Win version, supports code prompts!
