<UserInterfaces>

        <UserInterface>registerfilecheckboxform.ui</UserInterface>
        <UserInterface>openfilecheckboxform.ui</UserInterface>
    </UserInterfaces>

windeploy/config/config.xml

@@ -4,7 +4,7 @@
     <Version>1.0.0</Version>
     <Title>QtVsPlayer</Title>
     <Publisher>Surfzoid</Publisher>
-    <StartMenuDir>QtVsPlayer/QtVsPlayer.exe</StartMenuDir>
+    <StartMenuDir>QtVsPlayer</StartMenuDir>
     <TargetDir>@HomeDir@/QtVsPlayer</TargetDir>
     <RunProgram>@TargetDir@/QtVsPlayer.exe</RunProgram>
     <SupportsModify>true</SupportsModify>

windeploy/packages/com.surfzoid.QtVsPlayer/meta/installscript.qs

@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the FOO module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+function Component()
+{
+    component.loaded.connect(this, addRegisterFileCheckBox);
+    installer.installationFinished.connect(this, addOpenFileCheckBoxToFinishPage);
+    installer.finishButtonClicked.connect(this, openRegisteredFileIfChecked);
+    component.unusualFileType = generateUnusualFileType(5)
+}
+
+generateUnusualFileType = function(length)
+{
+    var randomString = "";
+    var possible = "abcdefghijklmnopqrstuvwxyz0123456789";
+
+    for (var i = 0; i < length; i++)
+        randomString += possible.charAt(Math.floor(Math.random() * possible.length));
+    return randomString;
+}
+
+// called as soon as the component was loaded
+addRegisterFileCheckBox = function()
+{
+    // don't show when updating or uninstalling
+    if (installer.isInstaller()) {
+        if (installer.addWizardPageItem(component, "RegisterFileCheckBoxForm", QInstaller.TargetDirectory)) {
+            component.userInterface("RegisterFileCheckBoxForm").RegisterFileCheckBox.text =
+                component.userInterface("RegisterFileCheckBoxForm").RegisterFileCheckBox.text + component.unusualFileType;
+        }
+    }
+}
+
+// here we are creating the operation chain which will be processed at the real installation part later
+Component.prototype.createOperations = function()
+{
+    // call default implementation to actually install the registeredfile
+    component.createOperations();
+
+    if (component.userInterface("RegisterFileCheckBoxForm")) {
+        var isRegisterFileChecked = component.userInterface("RegisterFileCheckBoxForm").RegisterFileCheckBox.checked;
+    }
+    if (installer.value("os") === "win") {
+        var iconId = 0;
+        var notepadPath = installer.environmentVariable("SystemRoot") + "\\QtVsPlayer.exe";
+        component.addOperation("RegisterFileType",
+                               component.unusualFileType,
+                               notepadPath + " '%1'",
+                               "QInstaller Framework example file type",
+                               "video/mp4",
+                               notepadPath + "," + iconId,
+                               "ProgId=QtProject.QtInstallerFramework." + component.unusualFileType);
+    }
+    component.fileWithRegisteredType = installer.value("TargetDir") + "/registeredfile." + component.unusualFileType
+    component.addOperation("Move", "@TargetDir@/registeredfile", component.fileWithRegisteredType);
+}
+
+openRegisteredFileIfChecked = function()
+{
+    if (!component.installed)
+        return;
+
+    if (installer.value("os") == "win" && installer.isInstaller() && installer.status == QInstaller.Success) {
+        var isOpenRegisteredFileChecked = component.userInterface("OpenFileCheckBoxForm").OpenRegisteredFileCheckBox.checked;
+        if (isOpenRegisteredFileChecked) {
+            QDesktopServices.openUrl("file:///" + component.fileWithRegisteredType);
+        }
+    }
+}
+
+addOpenFileCheckBoxToFinishPage = function()
+{
+    if (installer.isInstaller() && installer.status == QInstaller.Success) {
+        if (installer.addWizardPageItem(component, "OpenFileCheckBoxForm", QInstaller.InstallationFinished)) {
+            component.userInterface("OpenFileCheckBoxForm").OpenRegisteredFileCheckBox.text =
+                component.userInterface("OpenFileCheckBoxForm").OpenRegisteredFileCheckBox.text + component.unusualFileType;
+        }
+    }
+}

windeploy/packages/com.surfzoid.QtVsPlayer/meta/package.xml

@@ -8,4 +8,5 @@
         <License name="QtVsPlayer LICENSE" file="LICENSE.txt" />
     </Licenses>
     <Default>true</Default>
+    <Script>installscript.qs</Script>
 </Package>