<div dir="ltr">Sound like you are missing the plugin and module path maybe. You can add this function to your new MyQmlApplication class:<div><br></div><div><div>def loadPluginPath(self):</div><div> for i in os.environ['QT_PLUGIN_PATH'].split(';'):</div><div> self._engine.addPluginPath(i)</div></div><div><br></div><div><br></div><div>You can also add the following before creating the application object:</div><div><div><br></div><div>os.environ['QML2_IMPORT_PATH'] = ';'.join(['.', r"qml"])<br></div><div>os.environ['QT_PLUGIN_PATH'] = ';'.join(['.', r"plugins"])</div></div><div><br></div><div>Add any required path to both depending on your use case. Call the app.loadPluginPath() before the app.showAndExec()</div><div><br></div><div>This way the QQmlEngine will known where the module and plugin can be found. Make sure you have the Qt modules and plugin available inside those path list.</div><div><br></div><div>Also on another note, Try to remove the <span style="font-size:12.8px">ApplicationWindow from the script and try a simple script that only display a simple Item like this, you may have some Qml errors preventing the application from launching:</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">TestMain.qml:</span></div><div><span style="font-size:12.8px">import QtQuick 2.5</span></div><div><span style="font-size:12.8px">Rectangle</span></div><div><span style="font-size:12.8px">{</span></div><div><span style="font-size:12.8px"> color: 'red'</span></div><div><span style="font-size:12.8px"> width: 500</span></div><div><span style="font-size:12.8px"> height: 500</span></div><div><span style="font-size:12.8px">}</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 25, 2016 at 4:25 PM, Daniel Krause <span dir="ltr"><<a href="mailto:madakr@web.de" target="_blank">madakr@web.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="font-size:12.8px">Thank you for your suggestions.<br></div><span class=""><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">@Jerome</div><div style="font-size:12.8px">I used you code "as is", but for the last lines: I changed them to</div><div style="font-size:12.8px"><br></div></span><div style="font-size:12.8px"><div>if __name__ == '__main__':</div><span class=""><div> app = MyQmlApplication("MyAppTitle", sys.argv)</div><div> app.showAndExec(QUrl("main.qml"))</div></span></div><span class=""><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">The code executes, but the Window is empty.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><img src="cid:ii_1531a3e3c9fc0060" alt="Inline-Bild 1" width="472" height="345"><br></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">@Miguel:</div><div style="font-size:12.8px">I changed additionally the name "MainForm" to "Rectangle" as you suggested. But still, the window is empty...</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">I have the feeling, that the qml-file is not found / loaded. If I change the file name to "Main.qml" (which does not exist), the window looks the same...</div><div style="font-size:12.8px">Could it be an OS-problem, as I am working on windows?</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Any ideas would be welcome.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Daniel</div></span><div class="gmail_extra"><br><div class="gmail_quote"><span class="">2016-02-25 18:37 GMT+01:00 Jérôme Godbout <span dir="ltr"><<a href="mailto:jerome@bodycad.com" target="_blank">jerome@bodycad.com</a>></span>:<br></span><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div><div class="h5"><div dir="ltr">No sure what is wrong with yours, but I'm using a QQuickView inside a QApplication and it work well.<div><br></div><div>import sys<br></div><div><div><br></div><div>from PyQt5.QtCore import QSettings, QUrl, QRect, pyqtSignal, pyqtSlot</div><div>from PyQt5.QtWidgets import QApplication</div><div>from PyQt5.QtQuick import QQuickView, QQuickWindow</div><div><br></div><div>class MyQmlApplication(QApplication):</div><div> _application_name = "UNDEFINED"</div><div> _qquickview = None</div><div> _engine = None</div><div> _settings = None</div><div> </div><div> def __init__(self, title, args):</div><div> QApplication.__init__(self, args)</div><div> self._qquickview = QQuickView()</div><div> self._qquickview.setTitle(title)</div><div> self._qquickview.setResizeMode(QQuickView.SizeRootObjectToView)</div><div> self._qquickview.setGeometry(QRect(100,100,600,800))</div><div> self._engine = self._qquickview.engine()</div><div> </div><div> def showAndExec(self, qml_url):</div><div> self._qquickview.setSource(qml_url)</div><div> self._qquickview.show()</div><div> return self.exec_()</div><div><br></div><div>app = BodycadQmlApplication("MyAppTitle", sys.argv)</div><div>app.showAndExec(QUrl("Main.qml"))</div></div><div><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5"><div><div>On Thu, Feb 25, 2016 at 10:43 AM, Daniel Krause <span dir="ltr"><<a href="mailto:madakr@web.de" target="_blank">madakr@web.de</a>></span> wrote:<br></div></div></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div><div><div dir="ltr"><div><div class="h5"><span style="font-size:12.8px">Hello,</span><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">I am new to PyQt and having trouble to include QML-Code into an python application.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">The QML-File (main.qml) I can build in a project in QtCreator (a Qt Quick Application was used to create the project).</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><div>import QtQuick 2.5</div><div>import QtQuick.Controls 1.4</div><div>import QtQuick.Dialogs 1.2</div><div>import QtQml.Models 2.1</div><div><br></div><div>ApplicationWindow {</div><div> visible: true</div><div> width: 640</div><div> height: 480</div><div> title: qsTr("Hello World")</div><div><br></div><div> menuBar: MenuBar {</div><div> Menu {</div><div> title: qsTr("File")</div><div> MenuItem {</div><div> text: qsTr("&Open")</div><div> onTriggered: console.log("Open action triggered");</div><div> }</div><div> MenuItem {</div><div> text: qsTr("Exit")</div><div> onTriggered: Qt.quit();</div><div> }</div><div> }</div><div> }</div><div><br></div><div> MainForm {</div><div> id: mainForm1</div><div> anchors.fill: parent</div><div><br></div><div> SplitView {</div><div> id: splitView1</div><div> width: 100</div><div> anchors.left: parent.left</div><div> anchors.leftMargin: 36</div><div> anchors.bottom: parent.bottom</div><div> anchors.bottomMargin: 8</div><div> anchors.top: parent.top</div><div> anchors.topMargin: 8</div><div> orientation: Qt.Vertical</div><div><br></div><div><br></div><div> Button {</div><div> id: btn_welcome</div><div> x: 49</div><div> y: 21</div><div> text: qsTr("Welcome")</div><div> }</div><div><br></div><div> Button {</div><div> id: btn_database</div><div> x: 49</div><div> y: 50</div><div> text: qsTr("Database")</div><div> }</div><div><br></div><div> MouseArea {</div><div> id: mouseArea1</div><div> x: 0</div><div> y: 191</div><div> width: 100</div><div> height: 100</div><div> }</div><div> }</div><div> }</div><div>}</div></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">It results in the following window:</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><br></div></div></div><span class=""><div style="font-size:12.8px">To create the application in Python I tried to use QGuiApplication and QQmlApplicationEngine. </div><div style="font-size:12.8px">main.py and main.qml are located in the same directory:</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><div>import sys</div><div>from PyQt5.QtQml import QQmlApplicationEngine</div><div>from PyQt5.QtGui import QGuiApplication</div><div><br></div><div>if __name__ == '__main__':</div><div> app = QGuiApplication(sys.argv)</div><div> engine = QQmlApplicationEngine("main.qml")</div><div> print(engine)</div><div> sys.exit(app.exec_())</div></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">The print()-statement is never executed, no window is appearing.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">What did I miss?</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Thanks in advance</div><span><font color="#888888"><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Daniel</div></font></span></span></div>
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