| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the documentation of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
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| ** BSD License Usage |
| ** Alternatively, you may use this file under the terms of the BSD license |
| ** as follows: |
| ** |
| ** "Redistribution and use in source and binary forms, with or without |
| ** modification, are permitted provided that the following conditions are |
| ** met: |
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| ****************************************************************************/ |
| |
| |
| void wrapInFunction() |
| { |
| |
| //! [0] |
| QDir("/home/user/Documents") |
| QDir("C:/Documents and Settings") |
| //! [0] |
| |
| |
| //! [1] |
| QDir("images/landscape.png") |
| //! [1] |
| |
| |
| //! [2] |
| QDir("Documents/Letters/Applications").dirName() // "Applications" |
| QDir().dirName() // "." |
| //! [2] |
| |
| |
| //! [3] |
| QDir directory("Documents/Letters"); |
| QString path = directory.filePath("contents.txt"); |
| QString absolutePath = directory.absoluteFilePath("contents.txt"); |
| //! [3] |
| |
| |
| //! [4] |
| QDir dir("example"); |
| if (!dir.exists()) |
| qWarning("Cannot find the example directory"); |
| //! [4] |
| |
| |
| //! [5] |
| QDir dir = QDir::root(); // "/" |
| if (!dir.cd("tmp")) { // "/tmp" |
| qWarning("Cannot find the \"/tmp\" directory"); |
| } else { |
| QFile file(dir.filePath("ex1.txt")); // "/tmp/ex1.txt" |
| if (!file.open(QIODevice::ReadWrite)) |
| qWarning("Cannot create the file %s", file.name()); |
| } |
| //! [5] |
| |
| |
| //! [6] |
| QString bin = "/local/bin"; // where /local/bin is a symlink to /usr/bin |
| QDir binDir(bin); |
| QString canonicalBin = binDir.canonicalPath(); |
| // canonicalBin now equals "/usr/bin" |
| |
| QString ls = "/local/bin/ls"; // where ls is the executable "ls" |
| QDir lsDir(ls); |
| QString canonicalLs = lsDir.canonicalPath(); |
| // canonicalLS now equals "/usr/bin/ls". |
| //! [6] |
| |
| |
| //! [7] |
| QDir dir("/home/bob"); |
| QString s; |
| |
| s = dir.relativeFilePath("images/file.jpg"); // s is "images/file.jpg" |
| s = dir.relativeFilePath("/home/mary/file.txt"); // s is "../mary/file.txt" |
| //! [7] |
| |
| |
| //! [8] |
| QDir::setSearchPaths("icons", QStringList(QDir::homePath() + "/images")); |
| QDir::setSearchPaths("docs", QStringList(":/embeddedDocuments")); |
| ... |
| QPixmap pixmap("icons:undo.png"); // will look for undo.png in QDir::homePath() + "/images" |
| QFile file("docs:design.odf"); // will look in the :/embeddedDocuments resource path |
| //! [8] |
| |
| |
| //! [9] |
| QDir dir("/tmp/root_link"); |
| dir = dir.canonicalPath(); |
| if (dir.isRoot()) |
| qWarning("It is a root link"); |
| //! [9] |
| |
| |
| //! [10] |
| // The current directory is "/usr/local" |
| QDir d1("/usr/local/bin"); |
| QDir d2("bin"); |
| if (d1 == d2) |
| qDebug("They're the same"); |
| //! [10] |
| |
| |
| //! [11] |
| // The current directory is "/usr/local" |
| QDir d1("/usr/local/bin"); |
| d1.setFilter(QDir::Executable); |
| QDir d2("bin"); |
| if (d1 != d2) |
| qDebug("They differ"); |
| //! [11] |
| |
| |
| //! [12] |
| C:/Documents and Settings/Username |
| //! [12] |
| |
| |
| //! [13] |
| Q_INIT_RESOURCE(myapp); |
| //! [13] |
| |
| |
| //! [14] |
| inline void initMyResource() { Q_INIT_RESOURCE(myapp); } |
| |
| namespace MyNamespace |
| { |
| ... |
| |
| void myFunction() |
| { |
| initMyResource(); |
| } |
| } |
| //! [14] |
| |
| |
| //! [15] |
| Q_CLEANUP_RESOURCE(myapp); |
| //! [15] |
| |
| } |