I have a Native Window in Flex AIR. Let's say the window doesn't have a focus. It is inactive. Is it possible to find out when mouse is over such window? The window is always in front. I heard that it is possible by checking stage.mouseX in ENTER FRAME handler. But maybe there is a more elegant solution ?
I would look into using the MouseEvent.MOUSE_OVER event; which I would expect to fire whenever the mouse enters the window.
The only issue I see is that the NaiveWindow class does not document mouse events. So, the mouse event will most likely have to be dispatched from one of the children of the NativeWindow. You may try adding a a transparent image as the background, or something similar, and listen for the event on that image.
Not sure what you mean by you have a NativeWindow, but if you've extended spark.components.Window (which is the way you should be creating a window) and add a MouseEvent.MOUSE_MOVE listener to it then that will be triggered whenever the mouse is moving over the window, regardless of whether or not the window or application itself has focus.
Related
I find the graphical feedback when pressing buttons (WKInterfaceButton) in watchOS2 is very weak. It is hard to see and even Apple seems to thinks this is the case as they e.g. in the unlock screen change the background to white on active buttons. The default behaviour is to dim the whole button.
How can I make a button press cleared in watchOS 2? I can e.g. change the button text color on activity but how do I easily change it back when it is no longer active?
There is currently no way to detect touch-down, or other events, on WKInterfaceButtons like you can on UIButtons on iOS. The only touch event you can detect is touch-up-inside, which calls the IBAction method.
Therefore what you wish to accomplish cannot be accomplished. Something you might consider is animating the button appearance once the action has been triggered. For example in my app upon button tap I animate the button's background color, then animate it back to the original color. That provides more visual confirmation to the user so they are certain the button was tapped.
I'd encourage you to file an enhancement request at bugreport.apple.com if you'd like to have more control with touch events.
By default QSlider reacts on mouse wheel only when cursor is on it. I want to control slider by mouse wheel not matter where the cursor is (of course only when my application has focus).
What's the best way to achieve that?
I just learned that mouse doesn't generate signals. So looks like I need to override wheelEvent in main window and use raise or lower method in it. But I guess that can cause double increment (or decrement) of slider value when mouse is hovering it.
So once again: What's the best way to achieve what I described?
You can override the wheelEvent() in your MainWindow and redirect it to your slider control, that is indeed one option.
Another option is to install an event filter on the qApp instance. This even filter then can check whether the event type is QEvent::Wheel, and when the receiver is not the slider, then again redirect it to the slider. Should work just as well.
From what I see, QApplication::mouseButtons() may return no buttons even when a button is held down. This happens when you have clicked a side of a window for re-sizing. It's coherent with the docs because mouseButtons() reflects the state from the flow of QEvent::mouseButtonPress, etc. However, I need just to know if the button is held down. Does any one know if it's possible through the Qt API?
I think it's not possible. Mouse events outside an application's window are not passed to its event handlers. Dragging mouse borders is one of such events, it's processed by the window system. Another example is clicking on other windows. Usually an application doesn't know what the user does with other windows. You need to install system-wide event listener or use native API features(e.g. GetAsyncKeyState on Windows) to determine that. This behavior is unusual and possibly dangerous. In most cases it's not useful, and it seems that Qt doesn't have this ability.
I have a main window (on MS Windows) and I want to have sub windows or subpanels with free screen movement. I can use dialog and Qt::splashscreen flag, but when I am on these subwindows I lose the focus caption for the main window. Is there any trick to do what I want? (Something like a multi-focus...)
Maybe it is impossible?
I'm not sure what you mean by losing the focus.
When I create an application with multiple windows, this is what I do: in the sub-window widget, I set the parent to the main window, and set the Qt::Tool flag. It has multiple effects: the window manager sees it as one window, and when you focus any window, all the windows raise.
Do you want QMdiArea? Or a focus proxy?
In Qt, all top-level windows are independent, none is the "main". If you want to nominate one as a main window and have it steal focus from the others, then you will have to implement that manually.
Sounds like you just want to have widgets that you can move around freely on a parent widget/window, without invoking the "window focus changed" event between native Windows windows (...).
I'm not sure if there is a ready-made solution for that, but adding some grab/move/resize events to a widget's edges shouldn't be that hard, or?
I'd simply catch mousedown/up events on certain areas (these should probably be widgets of their own with a link to the parent movable widget), and have them resize/move the window when the mouse moves.
Firstly I feel this question is not a duplicate for :
Easiest implementation of onReleaseOutside in AS3?
Now, the problem , I want to do some action when the mouse_down happened inside the stage, but the mouseup happened outside it.
e.g check google finance charts, try dragging the change range divider and then make the drag such that your mouse exists the browser screen, and then do a mouse_up outside the browser, this will trigger some action inside the stage , i.e make the range stick to the position it was, when the mouse exited the window.)
How can this be done in Flex 3/4??
Thanks,
Neeraj
Try this one:
stage.addEventListener(Event.MOUSE_LEAVE, check);