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ドキュメントを起動するために、VC ++でShellExecuteを使用することに成功しました。ここで、いくつかの引数を受け取るコマンドライン ツールを実行し、バックグラウンドで (最小化ではなく非表示で) 実行し、プログラム フローをブロックさせて、終了を待つことができるようにしたいと考えています。コマンドラインを変更する方法:

ShellExecute(NULL,"open",FULL_PATH_TO_CMD_LINE_TOOL,ARGUMENTS,NULL,SW_HIDE);

問題は、html を pdf に変換するツールを持っていることです。ツールが完成したら、別名 pdf の準備ができたら、それを表示する別の ShellExecute が必要です。

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3 に答える 3

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の代わりに使用する方法を示すCodeProject の記事があります。ShellExecuteExShellExecute

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);
CloseHandle(ShExecInfo.hProcess);

重要なポイントは、MSDN が言うようにフラグSEE_MASK_NOCLOSEPROCESSです。

hProcessメンバーがプロセス ハンドルを受け取ることを示すために使用します。このハンドルは通常、 で作成されたプロセスがいつShellExecuteEx終了するかをアプリケーションが検出できるようにするために使用されます。

また、次の点に注意してください。

呼び出し元のアプリケーションは、ハンドルが不要になったときにハンドルを閉じる必要があります。

于 2013-07-14T11:26:36.343 に答える
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You can also use CreateProcess instead of ShellExecute/ShellExecuteEx. This function includes a cmd.exe wrapper option, returning the exit code, and returning stdout. (The includes may not be perfect).

Notes: In my use, I knew that there had to be stdout results, but the PeekedNamePipe function wouldn't always return the bytes count on the first try, hence the loop there. Perhaps, someone can figure this out and post a revision? Also, maybe an alternate version should be produced which returns stderr separately?

#include <stdio.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <Shellapi.h>


/*
Note: 
    The exitCode for a "Cmd Process" is not the exitCode
    for a sub process launched from it!  That can be retrieved
    via the errorlevel variable in the command line like so:
    set errorlevel=&[launch command]&echo.&echo exitCode=%errorlevel%&echo.
    The stdOut vector will then contain the exitCode on a seperate line
*/
BOOL executeCommandLine( const CStringW &command,
                         DWORD &exitCode,
                         const BOOL asCmdProcess=FALSE,
                         std::vector<CStringW> *stdOutLines=NULL )
{
    // Init return values
    BOOL bSuccess = FALSE;
    exitCode = 0;
    if( stdOutLines ) stdOutLines->clear();

    // Optionally prepend cmd.exe to command line to execute
    CStringW cmdLine( (asCmdProcess ? L"cmd.exe /C " : L"" ) +
                      command );

    // Create a pipe for the redirection of the STDOUT 
    // of a child process. 
    HANDLE g_hChildStd_OUT_Rd = NULL;
    HANDLE g_hChildStd_OUT_Wr = NULL;
    SECURITY_ATTRIBUTES saAttr; 
    saAttr.nLength = sizeof(SECURITY_ATTRIBUTES); 
    saAttr.bInheritHandle = TRUE; 
    saAttr.lpSecurityDescriptor = NULL; 
    bSuccess = CreatePipe( &g_hChildStd_OUT_Rd, 
                           &g_hChildStd_OUT_Wr, &saAttr, 0);
    if( !bSuccess ) return bSuccess;         
    bSuccess = SetHandleInformation( g_hChildStd_OUT_Rd, 
                                     HANDLE_FLAG_INHERIT, 0 );
    if( !bSuccess ) return bSuccess;         

    // Setup the child process to use the STDOUT redirection
    PROCESS_INFORMATION piProcInfo; 
    STARTUPINFO siStartInfo;    
    ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
    ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
    siStartInfo.cb = sizeof(STARTUPINFO); 
    siStartInfo.hStdError = g_hChildStd_OUT_Wr;
    siStartInfo.hStdOutput = g_hChildStd_OUT_Wr;
    siStartInfo.dwFlags |= STARTF_USESTDHANDLES;

    // Execute a synchronous child process & get exit code
    bSuccess = CreateProcess( NULL, 
      cmdLine.GetBuffer(),  // command line 
      NULL,                 // process security attributes 
      NULL,                 // primary thread security attributes 
      TRUE,                 // handles are inherited 
      0,                    // creation flags 
      NULL,                 // use parent's environment 
      NULL,                 // use parent's current directory 
      &siStartInfo,         // STARTUPINFO pointer 
      &piProcInfo );        // receives PROCESS_INFORMATION    
    if( !bSuccess ) return bSuccess;         
    WaitForSingleObject( piProcInfo.hProcess, (DWORD)(-1L) );
    GetExitCodeProcess( piProcInfo.hProcess, &exitCode );   
    CloseHandle( piProcInfo.hProcess );
    CloseHandle( piProcInfo.hThread );

    // Return if the caller is not requesting the stdout results
    if( !stdOutLines ) return TRUE;

    // Read the data written to the pipe
    DWORD bytesInPipe = 0;
    while( bytesInPipe==0 ){
        bSuccess = PeekNamedPipe( g_hChildStd_OUT_Rd, NULL, 0, NULL, 
                                  &bytesInPipe, NULL );
        if( !bSuccess ) return bSuccess;
    }
    if( bytesInPipe == 0 ) return TRUE; 
    DWORD dwRead; 
    CHAR *pipeContents = new CHAR[ bytesInPipe ];    
    bSuccess = ReadFile( g_hChildStd_OUT_Rd, pipeContents, 
                         bytesInPipe, &dwRead, NULL);
    if( !bSuccess || dwRead == 0 ) return FALSE; 

    // Split the data into lines and add them to the return vector
    std::stringstream stream( pipeContents );
    std::string str;
    while( getline( stream, str ) ) 
        stdOutLines->push_back( CStringW( str.c_str() ) );

    return TRUE;
}
于 2015-04-27T18:24:52.053 に答える