vc入门宝典十二(调用其它程序)

调用其它程序

WinExec
原型:
UINT WinExec(
LPCSTR lpCmdLine, // address of command line
UINT uCmdShow // window style for new application
);
用于十六位操作系统及兼容系统.
例如:
WinExec("notepad.exe f://调用程序.txt",SW_SHOW);
WinExec("notepad.exe ",SW_SHOW);
不同的参数用空格分开,故路径中不能有空格,而大部分程序默认是安装在".../Program Files/...",如word,这极大的限制了WinExec的应用范围.
以上可不带路径:
1,程序所在目录.
2,当前路径.
3,系统目录,可以用GetSystemDirectory得到.
4,Windows 目录. 可以用TheGetWindowsDirectory得到.
5,在环境变量中设置的目录.

ShellExecute
原型:
HINSTANCE ShellExecute(
HWND hwnd, //父窗口句柄
LPCTSTR lpOperation, //操作,"open","print","explore"
LPCTSTR lpFile, //文件名,前面可加路径
LPCTSTR lpParameters, //参数
LPCTSTR lpDirectory, //默认文件夹
INT nShowCmd //显示方式
);

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 );

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 );

激活相关程序，发送EMAIL
ShellExecute(this->m_hWnd,"open","mailto:nishinapp@yahoo.com","","", SW_SHOW );

用系统打印机打印文档
ShellExecute(this->m_hWnd,"print","c:/abc.txt","","", SW_HIDE);

lpParameters的用法示例:
一,建立一个可以接受参数的程序call.exe,添加如下代码:
BOOL CCallApp::InitInstance()
{
int n = __argc;
for(int i = 1 ; i < n ; i++)
AfxMessageBox(__targv[i]);
//__targv[0]存储的是程序的文件名
...
}
二,Alt + F7的进行Project setting, Debug -> program argurments ->"1 2 3 4 5".
如果有多个参数,用空格分开.
三,运行.
四,执行ShellExecute(NULL,NULL,"f://call.exe","1 2 3 4 5",NULL,SW_SHOW);

BOOL CreateProcess(
LPCTSTR lpApplicationName,

LPTSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCTSTR lpCurrentDirectory,
LPSTARTUPINFO lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
);

STARTUPINFO startupInfo;
memset(&startupInfo,0,sizeof(STARTUPINFO));
startupInfo.cb = sizeof(STARTUPINFO);

示例:
//程序最启动时最大化
startupInfo.dwFlags |= STARTF_USESHOWWINDOW;
startupInfo.wShowWindow = SW_SHOWMAXIMIZED;

//运行....exe
PROCESS_INFORMATION ProcessInfo;
BOOL bCreate = ::CreateProcess
(
"f://call.exe",// 1 2 3 4",
NULL,
NULL,
NULL,
FALSE,
0,
NULL,
NULL,
&startupInfo,
&ProcessInfo);

//等到call.exe执行完毕
WaitForSingleObject(ProcessInfo.hProcess,1000000);
MessageBox("调用程序结束!");

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