如何在一个程序中打开另一个应用程序

　如何在一个程序中打开另一个应用程序
　　常用以下这几个函数:
　　spawnl()
　　system()
　　exec()
　　shellexecute()
　　示例:
　　 spawnl(P_OVERLAY,"c://command.com","command.com","/calc.exe",NULL); 
　　 system("c:/calc.exe");能调试出来计算器。
　　 exec("c:/calc.exe");
　　如何打开一个应用程序？
　　ShellExecute(this->m_hWnd,"open","calc.exe","","", SW_SHOW );
　　或
　　ShellExecute(this->m_hWnd,"open","notepad.exe",
　　"c://MyLog.log","",SW_SHOW );
　　As you can see, I havent passed the full path of the programs. 
　　如何打开一个同系统程序相关连的文档？
　　ShellExecute(this->m_hWnd,"open",
　　"c://abc.txt","","",SW_SHOW );
　　如何打开一个网页？
　　ShellExecute(this->m_hWnd,"open",
　　" http://www.google.com","","", SW_SHOW );
　　如何激活相关程序，发送EMAIL？
　　ShellExecute(this->m_hWnd,"open",
　　"mailto:[email protected]","","", SW_SHOW );
　　如何用系统打印机打印文档？
　　ShellExecute(this->m_hWnd,"print",
　　"c://abc.txt","","", SW_HIDE);
　　如何用系统查找功能来查找指定文件？
　　ShellExecute(m_hWnd,"find","d://nish",
　　NULL,NULL,SW_SHOW);
　　如何启动一个程序，直到它运行结束？
　　SHELLEXECUTEINFO ShExecInfo = {0};
　　ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
　　ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
　　ShExecInfo.hwnd = NULL;
　　ShExecInfo.lpVerb = NULL;
　　ShExecInfo.lpFile = "c://MyProgram.exe"; 
　　ShExecInfo.lpParameters = ""; 
　　ShExecInfo.lpDirectory = NULL;
　　ShExecInfo.nShow = SW_SHOW;
　　ShExecInfo.hInstApp = NULL; 
　　ShellExecuteEx(&ShExecInfo);
　　WaitForSingleObject(ShExecInfo.hProcess,INFINITE);
　　或：
　　PROCESS_INFORMATION ProcessInfo; 
　　STARTUPINFO StartupInfo; //This is an [in] parameter
　　ZeroMemory(&StartupInfo, sizeof(StartupInfo));
　　StartupInfo.cb = sizeof StartupInfo ; //Only compulsory field
　　if(CreateProcess("c://winnt//notepad.exe", NULL, 
　　NULL,NULL,FALSE,0,NULL,
　　NULL,&StartupInfo,&ProcessInfo))
　　{ 
　　WaitForSingleObject(ProcessInfo.hProcess,INFINITE);
　　CloseHandle(ProcessInfo.hThread);
　　CloseHandle(ProcessInfo.hProcess);
　　} 
　　else
　　{
　　MessageBox("The process could not be started...");
　　}
　　如何显示文件或文件夹的属性？
　　SHELLEXECUTEINFO ShExecInfo ={0};
　　ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
　　ShExecInfo.fMask = SEE_MASK_INVOKEIDLIST ;
　　ShExecInfo.hwnd = NULL;
　　ShExecInfo.lpVerb = "properties";
　　ShExecInfo.lpFile = "c://"; //can be a file as well
　　ShExecInfo.lpParameters = ""; 
　　ShExecInfo.lpDirectory = NULL;
　　ShExecInfo.nShow = SW_SHOW;
　　ShExecInfo.hInstApp = NULL; 
　　ShellExecuteEx(&ShExecInfo);