Qt 如何在打开的文件夹中鼠标选中某文件

发布网友发布时间：2022-04-24 02:14

共1个回答

热心网友时间：2023-10-21 08:36

是在打开的文件夹中自动选中某文件吧？不需要用鼠标。

试试看这一段：

bool OpenFolderAndSelectFile(const char *filePath)
{
#ifdef Q_OS_WIN

    LPITEMIDLIST pidl;
    LPCITEMIDLIST cpidl;
    LPSHELLFOLDER pDesktopFolder;
    ULONG chEaten;
    HRESULT hr;
    WCHAR wfilePath[MAX_PATH+1] = { 0 };

    ::CoInitialize( NULL );

    if ( SUCCEEDED( SHGetDesktopFolder( &pDesktopFolder ) ) )
    {
        // IShellFolder::ParseDisplayName要传入宽字节
        LPWSTR lpWStr = NULL;
//#ifdef _UNICODE
//        _tcscpy( wfilePath, strFilePath );
//        lpWStr = wfilePath;
//#else
        MultiByteToWideChar( CP_ACP, 0, (LPCSTR)filePath, -1, wfilePath, MAX_PATH );
        lpWStr = wfilePath;
//#endif

        hr = pDesktopFolder->ParseDisplayName( NULL, 0, lpWStr, &chEaten, &pidl, NULL );
        if ( FAILED( hr ) )
        {
            pDesktopFolder->Release();
            ::CoUninitialize();
            return FALSE;
        }

        cpidl = pidl;

        // SHOpenFolderAndSelectItems是非公开的API函数，需要从shell32.dll获取
        // 该函数只有XP及以上的系统才支持，Win2000和98是不支持的，考虑到Win2000
        // 和98已经基本不用了，所以就不考虑了，如果后面要支持上述老的系统，则要
                // 添加额外的处理代码
        HMODULE hShell32DLL = ::LoadLibraryA("shell32.dll");
        //ASSERT( hShell32DLL != NULL );
        if( hShell32DLL != NULL )
        {
            typedef HRESULT (WINAPI *pSelFun)( LPCITEMIDLIST pidlFolder, UINT cidl, LPCITEMIDLIST  *apidl, DWORD dwFlags );
            pSelFun pFun = (pSelFun)::GetProcAddress( hShell32DLL, "SHOpenFolderAndSelectItems" );
            //ASSERT( pFun != NULL );
            if( pFun != NULL )
            {
                hr = pFun( cpidl, 0, NULL, 0 ); // 第二个参数cidl置为0，表示是选中文件
                if ( FAILED( hr ) )
                {
                    ::FreeLibrary( hShell32DLL );
                    pDesktopFolder->Release();
                    ::CoUninitialize();
                    return FALSE;
                }
            }

            ::FreeLibrary( hShell32DLL );
        }
        else
        {
            pDesktopFolder->Release();
            ::CoUninitialize();
            return FALSE;
        }

        // 释放pDesktopFolder
        pDesktopFolder->Release();
    }
    else
    {
        ::CoUninitialize();
        return FALSE;
    }

    ::CoUninitialize();
    return TRUE;

#else
    QString pathIn(filePath);
    QStringList scriptArgs;
    scriptArgs << QLatin1String("-e") << QString::fromLatin1("tell application \"Finder\" to reveal POSIX file \"%1\"").arg(pathIn.replace('\\', '/'));
    QProcess::execute(QLatin1String("/usr/bin/osascript"), scriptArgs);
    scriptArgs.clear();
    scriptArgs << QLatin1String("-e") << QLatin1String("tell application \"Finder\" to activate");
    QProcess::execute("/usr/bin/osascript", scriptArgs);
    return true;
#endif
}