命令 CreateProcess C++ [英] The Command CreateProcess C++

问题描述

命令 CreateProcess 和命令 WaitForSingleObject可以打开图片吗?如果是 我怎样才能打开图像?我尝试打开，但我不知道在哪里打开路径

The Command CreateProcess With the command WaitForSingleObject can to open an image? If Yes How can I open the image? I tried to open but i don't know Where to put the path to open

    if (CreateProcess(NULL, "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Paint.lnk", NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi))
    {
        WaitForSingleObject(pi.hProcess, INFINITE);

        CloseHandle(pi.hThread);
        CloseHandle(pi.hProcess);
    }

推荐答案

如果您只想使用默认应用打开现有图像，请使用 ShellExectue API.例如:

If you just want to open an existing image using defualt app then use ShellExectue API. For example:

ShellExecuteW(NULL, L"open", L"Z:\\cat.PNG", NULL, NULL, SW_SHOW);

您也可以使用 mspaint 使用相同的 API 打开图像:

You could also open image with mspaint using the same API:

ShellExecuteW(NULL, L"open", L"C:\\Windows\\system32\\mspaint.exe", L"Z:\\cat.PNG", NULL, SW_SHOW);

ShellExecuteEx 会让你等待完成过程.

ShellExecuteEx will let you wait for finishing process.

您可以使用 创建流程.正如@DavidHeffernan 指出的第二个参数 CreateProcess 应该指向可写内存，否则会引发访问冲突.为了清楚起见，我将省略第一个参数.示例:

You can do the same using CreateProcess. As @DavidHeffernan pointed out the second parameter of CreateProcess should point to writable memory else it will raise access violation. To make it clear I will just omit the first parameter. Example:

STARTUPINFOW process_startup_info{ 0 };
process_startup_info.cb = sizeof(process_startup_info); // setup size of strcture in bytes

PROCESS_INFORMATION process_info{ 0 };

wchar_t commandline_args[] = L"\"C:\\Windows\\system32\\mspaint.exe\" Z:\\cat.PNG";

if (CreateProcessW(NULL, commandline_args, NULL, NULL, TRUE, 0, NULL, NULL, &process_startup_info, &process_info))
{
    //WaitForSingleObject(process_info.hProcess, INFINITE); // uncomment to wait till process finish
    CloseHandle(process_info.hProcess);
    CloseHandle(process_info.hThread);
}

我强烈建议阅读 这篇 CodeProject 文章(生成过程的新手基本指南).

I strongly recommend to read this CodeProject article (A newbie's elementary guide to spawning processes).

这篇关于命令 CreateProcess C++的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！