Minimizing frameless windows from the taskbar and show again, it will lead app to no reponse, is a bug?

dagan9528

Minimizing the frameless windows from the taskbar and show again, it will lead app to no reponse.
Platform: win7 x86 desktop
Below is test code base Qt Quick 1 Application(Built-in Elements)

@main.qml

import QtQuick 1.1

Rectangle {
id: root
width: 400
height: 300
color: "#00000000"

property string titleCloseSource: "uiResource/btn_close_n.png"

Image {
    id: iconClose
    anchors.fill: parent
    source: root.titleCloseSource

    MouseArea {
        id: maClose
        hoverEnabled: true
        anchors.fill: parent
        onClicked: Qt.quit();
        onEntered: root.titleCloseSource = "uiResource/btn_close_p.png"
        onExited: root.titleCloseSource = "uiResource/btn_close_n.png"
        onPressed: root.titleCloseSource = "uiResource/btn_close_h.png"
    }
}

}@
This is a Image will change source by mouse event.

@main.cpp

Q_DECL_EXPORT int main(int argc, char *argv[])
{
//...
viewer.setMainQmlFile(QLatin1String("qml/main.qml"));

//transparent
viewer.setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowMinimizeButtonHint );
viewer.setAttribute(Qt::WA_TranslucentBackground);
viewer.setStyleSheet("background:transparent;");

//...

}@
This is add WindowsFlags.

When app running, the mouse event is working correct. And then minimizing frameless windows from the taskbar and show again, the Image not change source when mouse event.