Hello, I have a small fullscreen program which doesn't minimize properly. I can get the program to minimize in Qt 5.0.2 but not in 5.1.0. Everything is fine in Qt Creator, yet when I deploy 5.0.2 works, but 5.1.0 doesn’t.

I have noticed that 5.0.2 requires d3dcompiler_43.dll but 5.1.0 doesn’t, and the 5.1.0\mingw48_32\bin folder doesn’t contain that file at all, and it’s also missing libEGL.dll and GLESv2.dll which were present in 5.0.2. I found them in the Tools\QtCreator\bin folder.

I have a small program which shows what happens, but you will have to deploy it first:

Qt Code: 
  1. import QtQuick 2.0
  2.  
  3. Rectangle {
  4.     width: 360
  5.     height: 360
  6.     Text {
  7.         id: minText
  8.         text: qsTr("Minimize")
  9.         anchors.centerIn: parent
  10.         MouseArea {
  11.             anchors.fill: parent
  12.             onClicked: {
  13.                 QtQuick2ApplicationViewer.showMinimized();
  14.             }
  15.         }
  16.     }
  17.  
  18.  
  19.     Text {
  20.         id: quitText
  21.         text: qsTr("Quit")
  22.         anchors.left: minText.right
  23.         anchors.leftMargin: 10
  24.         anchors.verticalCenter: minText.verticalCenter
  25.         MouseArea {
  26.             anchors.fill: parent
  27.             onClicked: {
  28.                 Qt.quit();
  29.             }
  30.         }
  31.     }
  32.  
  33. }
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Here’s the main.cpp file:

Qt Code: 
  1. #include <QtGui/QGuiApplication>
  2. #include "qtquick2applicationviewer.h"
  3.  
  4. #include <QQmlContext>
  5.  
  6. int main(int argc, char *argv[])
  7. {
  8.     QGuiApplication app(argc, argv);
  9.  
  10.     QtQuick2ApplicationViewer viewer;
  11.     viewer.rootContext()->setContextProperty("QtQuick2ApplicationViewer", &viewer);
  12.     viewer.setMainQmlFile(QStringLiteral("qml/MinimizeTest/main.qml"));
  13.     viewer.showFullScreen();
  14.  
  15.     return app.exec();
  16. }
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This only happens if the program is set to showFullScreen(), but doesn’t happen if showExpanded() is used.