qt 6.5.1 original

examples/widgets/tools/styleplugin/stylewindow/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+qt_add_executable(styleplugin
+    main.cpp
+    stylewindow.cpp stylewindow.h
+)
+
+set_target_properties(styleplugin PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(styleplugin PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+if(NOT QT6_IS_SHARED_LIBS_BUILD)
+    target_link_libraries(styleplugin PRIVATE
+        simplestyleplugin
+    )
+endif()
+
+install(TARGETS styleplugin
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/tools/styleplugin/stylewindow/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+#include <QStyleFactory>
+
+#include "stylewindow.h"
+
+//! [0]
+int main(int argv, char *args[])
+{
+    QApplication app(argv, args);
+
+    QStyle *style = QStyleFactory::create("simplestyle");
+    if (!style)
+        qFatal("Cannot load the 'simplestyle' plugin.");
+
+    QApplication::setStyle(style);
+
+    StyleWindow window;
+    window.resize(350, 50);
+    window.show();
+
+    return app.exec();
+}
+//! [0]

examples/widgets/tools/styleplugin/stylewindow/stylewindow.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QGridLayout>
+#include <QGroupBox>
+#include <QTextEdit>
+
+#include "stylewindow.h"
+
+StyleWindow::StyleWindow()
+{
+    QTextEdit *styledTextEdit = new QTextEdit(tr("The quick brown fox jumps over the lazy dog"));
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(styledTextEdit);
+
+    QGroupBox *styleBox = new QGroupBox(tr("A simple styled text edit"));
+    styleBox->setLayout(layout);
+
+    QGridLayout *outerLayout = new QGridLayout;
+    outerLayout->addWidget(styleBox, 0, 0);
+    setLayout(outerLayout);
+
+    setWindowTitle(tr("Style Plugin Example"));
+}

examples/widgets/tools/styleplugin/stylewindow/stylewindow.h

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef STYLEWINDOW_H
+#define STYLEWINDOW_H
+
+#include <QWidget>
+
+class StyleWindow : public QWidget
+{
+    Q_OBJECT
+
+public:
+    StyleWindow();
+};
+
+#endif

examples/widgets/tools/styleplugin/stylewindow/stylewindow.pro

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+QT += widgets
+
+HEADERS    = stylewindow.h
+SOURCES    = stylewindow.cpp \
+             main.cpp
+
+TARGET     = styleplugin
+win32 {
+    debug:DESTDIR = ../debug/
+    release:DESTDIR = ../release/
+} else {
+    DESTDIR    = ../
+}
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/tools/styleplugin
+INSTALLS += target
+
+CONFIG += install_ok  # Do not cargo-cult this!