CreateProcess函数而不是系统

Question

我创建了一个代码,使用Windows窗体应用程序来构造一个gui.我在我的代码中使用系统命令来调用外部.exe.但是,这种方法创建了一个命令行终端.我发现我可以在这里用CreateProcess函数替换系统.我该如何使用这个功能？我应该指定哪些参数才能运行？我现在的代码是:

 string run_template = "a.exe -i " + s1 + " -r 10 -f image2  filename%03d.jpg";
 system(run_template.c_str());

编辑:

 #include <tchar.h>

 string workPath = "";
 string args = "-i " + s1 + " -r 10 -f image2  vid/frames/filename%03d.jpg";

 HINSTANCE hRet = ShellExecute(NULL, _T("open"), _T("a.exe"), _T(args.c_str()), _T(workPath.c_str()), SW_HIDE);
 DWORD errNum = GetLastError();

我收到以下错误:

1>c\projects\first_api\first_api\Form1.h(229): error  C2065: 'Largs' : undeclared identifier
1>c:\projects\first_api\first_api\Form1.h(229): error C2228: left of '.c_str' must have class/struct/union
1>          type is ''unknown-type'' 
1>c:\projects\first_api\first_api\Form1.h(229): error C2065: 'LworkPath' : undeclared identifier
1>c:\projects\first_api\first_api\Form1.h(229): error C2228: left of '.c_str' must have class/struct/union

EDIT2:

string run_template = "a.exe -i " + s1 + " -r 1 -f image2 /filename%03d.jpg";
//system(run_template.c_str());

STARTUPINFOA si = {sizeof(STARTUPINFOA), 0};
PROCESS_INFORMATION pi = {0};

if (CreateProcessA(NULL, const_cast<char*>(run_template.c_str()), NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))   {
     CloseHandle(pi.hThread);
     CloseHandle(pi.hProcess);
}

使用上面的代码时,命令提示符仍然存在.

Answer 1

string run_template = "a.exe -i " + s1 + " -r 10 -f image2  filename%03d.jpg";

STARTUPINFOA si = {sizeof(STARTUPINFOA), 0};
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_HIDE;

PROCESS_INFORMATION pi = {0};

vector<char> cmdline(run_template.begin(), run_template.end());
if (CreateProcessA(NULL, &cmdline[0], NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
{
    CloseHandle(pi.hThread);
    CloseHandle(pi.hProcess);
}