C++:如何让我的程序打开一个带有可选参数的 .exe [英] C++: How to make a my program open a .exe with optional args

问题描述

我在使用程序时遇到了一些问题.我的目标是让它打开几个 .exe 文件，并传递可选的 args.例如，如果我想打开一个 pdf，我可以在 cmd 窗口中输入下面的字符串.

I'm having some trouble with a program. My goal is to have it open several .exe files with optional args passed. For example if I wanted to open up a pdf I could type the string below into a cmd window.

// If used in a cmd window it will open up my PDF reader and load MyPDF.pdf file
"c:\Test space\SumatraPDF.exe" "c:\Test space\Sub\MyPDF.pdf"

这是我使用过的两次尝试.第一个打开 PDF，但当然不会加载文件.第二个根本不起作用.

Here are two tries I used. The first opens the PDF but of course doesn't load the file. The second simply doesn't work.

// Opens the PDF in my program
system("\"C:\\Test space\\SumatraPDF.exe\"");

// Error I get inside of a cmd window is the comment below
// 'C:\Test' is not recognized as an internal or external command, operable program or batch file.
//system("\"C:\\Test space\\SumatraPDF.exe\" \"C:\\Test space\\Sub\\MyPDF.pdf\"");

我不确定第二个不起作用的原因.可能是我对系统有误解，或者我没有正确使用分隔符.

I'm unsure of the reason why the second one does not work. It could be I'm misunderstanding something about system, or I'm not using delimiters right.

我觉得有一个专门为此设计的库，而不是创建一个使用这么多分隔符的长字符串.

I feel like there is a library out there designed for this rather than creating a long string that uses so many delimiters.

感谢您的帮助.

推荐答案

欢迎使用 Stack Overflow！

Welcome to Stack Overflow!

system 方法通过将其参数传递给 cmd/c 来工作.因此，您将需要一组额外的引号.请参阅 sled 发布的相关问题.

The system method works by passing it's argument to cmd /c. So you will need an extra set of quotes around it. See related question posted by sled.

作为系统的替代，看看ShellExecute 或 ShellExecuteEx Win32 API 函数.虽然不那么便携，但它有更多的功能.

As an alternative to system, take a look at the ShellExecute or ShellExecuteEx Win32 API function. It has more features although it is not as portable.

// ShellExecute needs COM to be initialized
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);

SHELLEXECUTEINFO sei = {0};
sei.cbSize = sizeof(sei);
sei.lpFile = prog;   // program like c:\Windows\System32\notepad.exe
sei.lpParameters = args;  // program arguments like c:\temp\foo.txt
sei.nShow = SW_NORMAL;  // app should be visible and not maximized or minimized

ShellExecuteEx(&sei);  // launch program

CoUninitialize();

更多信息这里.

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