转深入浅出ShellExecute
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ShellExecute的功能是运行一个外部程序(或者是打开一个已注册的文件、打开一个目录、打印一个文件等等),并对外部程序有一定的控制。
原型及参数含义
ShellExecute函数原型及参数含义如下:
ShellExecute(
hWnd: HWND; {指定父窗口句柄}
Operation: PChar; {指定动作, 譬如: open、print}
FileName: PChar; {指定要打开的文件或程序}
Parameters: PChar; {给要打开的程序指定参数; 如果打开的是文件这里应该是 nil}
Directory: PChar; {缺省目录}
ShowCmd: Integer {打开选项}
): HINST; {执行成功会返回应用程序句柄; 如果这个值<= 32, 表示执行错误}
//返回值可能的错误有: = 0 {内存不足}
ERROR_FILE_NOT_FOUND = 2; {文件名错误}
ERROR_PATH_NOT_FOUND = 3; {路径名错误}
ERROR_BAD_FORMAT = 11; {EXE 文件无效}
SE_ERR_SHARE = 26; {发生共享错误}
SE_ERR_ASSOCINCOMPLETE = 27; {文件名不完全或无效}
SE_ERR_DDETIMEOUT = 28; {超时}
SE_ERR_DDEFAIL = 29; {DDE 事务失败}
SE_ERR_DDEBUSY = 30; {正在处理其他 DDE 事务而不能完成该 DDE 事务}
SE_ERR_NOASSOC = 31; {没有相关联的应用程序}
//ShowCmd 参数可选值:SW_HIDE = 0; {隐藏}
SW_SHOWNORMAL = 1; {用最近的大小和位置显示, 激活}
SW_NORMAL = 1; {同 SW_SHOWNORMAL}
SW_SHOWMINIMIZED = 2; {最小化, 激活}
SW_SHOWMAXIMIZED = 3; {最大化, 激活}
SW_MAXIMIZE = 3; {同 SW_SHOWMAXIMIZED}
SW_SHOWNOACTIVATE = 4; {用最近的大小和位置显示, 不激活}
SW_SHOW = 5; {同 SW_SHOWNORMAL}
SW_MINIMIZE = 6; {最小化, 不激活}
SW_SHOWMINNOACTIVE = 7; {同 SW_MINIMIZE}
SW_SHOWNA = 8; {同 SW_SHOWNOACTIVATE}
SW_RESTORE = 9; {同 SW_SHOWNORMAL}
SW_SHOWDEFAULT = 10; {同 SW_SHOWNORMAL}
SW_MAX = 10; {同 SW_SHOWNORMAL}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Q: 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 );
正如您所看到的,我并没有传递程序的完整路径。
Q: 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 );
Q: 如何打开一个网页?
ShellExecute(this->m_hWnd,"open","http://www.google.com","","", SW_SHOW );
Q: 如何激活相关程序,发送EMAIL?
ShellExecute(this->m_hWnd,"open", "mailto:nishinapp@yahoo.com","","", SW_SHOW );
Q: 如何用系统打印机打印文档?
ShellExecute(this->m_hWnd,"print","c:\abc.txt","","", SW_HIDE);
Q: 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);
Q: 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...");}
Q: 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);
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