[Interest] QML window icon

[1+1=2]

Hi,

For Windows user, you can create a xxx.rc file which contains the icon file
path maunlly, then assign it to the qmake's variable RC_FILE.

Or, from Qt5.0.2 on, you can simply assign the icon file path to qmake's
variable RC_ICON

    RC_ICON = aaaaa.ico

Regards,

Debao


On Wed, Jan 30, 2013 at 3:10 AM, Alan Alpert <416365416c at gmail.com> wrote:

> On Tue, Jan 29, 2013 at 11:05 AM, Rutledge Shawn
> <Shawn.Rutledge at digia.com> wrote:
> > Mark Summerfield writes:
> >> I am trying to create a "pure" QML program, so may main.cpp is simply:
> >>
> >>     #include <QGuiApplication>
> >>     #include <QQmlEngine>
> >>     #include <QQuickView>
> >>     int main(int argc, char *argv[])
> >>     {
> >>       QGuiApplication app(argc, argv);
> >>       QQmlEngine engine;
> >>       QQuickView view(&engine, 0);
> >>       view.setSource(QUrl("qrc:/myapp.qml"));
> >>       view.show();
> >>       return app.exec();
> >>     }
> >>
> >> In myapp.qml I have:
> >>
> >>     import QtQuick 2.0
> >>     import QtQuick.Window 2.0
> >>     Window {
> >>       title: "Caption"
> >>       ...
> >>     }
> >>
> >> But there doesn't seem to be any API for setting the application's icon.
> >> (I know I could use QApplication, but I am trying to avoid using
> >> QWidget.)
> >>
> >> Is it possible to set an application icon, and if so, how?
> >
> > Currently there isn't a way to do it from QML.  This is because we have
> not exposed QIcon as a QtQuick type.  Window icons can be different sizes,
> depending on the context in which the windowing system shows them (as a
> decoration on the title bar, on a task bar or dock, as "tiles" or
> whatever).  QIcon allows you to provide multiple image sizes, but we didn't
> design the QML API for that yet.  The simplest is that we could add an
> image source URL to QQuickWindow, you could provide a medium-sized image
> for the icon, and it can be scaled down (as small as 16 pixels sometimes);
> but the result will be less optimal than if you could provide a 16-pixel
> icon yourself, in addition to the larger one.  We will need icons for
> Actions too, which we are in the process of adding to QtQuick.  So my
> opinion is that we need proper icon objects in QtQuick for both use cases.
> >
> > A QML Window is a QQuickWindow which is a subclass of QWindow, so the
> method you would want to call is QWindow::setIcon(QIcon &).  Maybe you can
> create a subclass of QQuickWindow in C++ which sets the icon, do
> qmlRegisterType to make it available, and instantiate that instead of plain
> Window? I haven't tried that myself, but it seems like it should work.
>
> There's an even simpler way to do it from C++ - just manage the window
> there. QQuickView is a window as well, just use that as the window
> (instead of having an empty window as well as the Window{}), and call
> setIcon on it. That's just adding  "view.setIcon(icon);" in your
> existing C++ code, and using an Item{} as the root of myapp.qml
> instead of Window{}.
>
> > Sorry it's not straightforward yet, but I think we will need to add the
> QML window icon API as soon as we have the Icon API figured out in general.
>
> The Window{} QML API is also really new, so there's a lot more work to
> be done with controlling windows from QML. Right now, it's probably
> easiest to control the main window from C++.
>
> --
> Alan Alpert
> _______________________________________________
> Interest mailing list
> Interest at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
>
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