There is just not a lot of information out there about using GKStateMachine and I was wondering where mouse events should be handled. In Apple's "Dispenser" example, they handle the mouse click events in the main scene and I was wondering if that's where they should be handled or can each state handle its own mouse events?
My purpose for using GKStateMachine in the first place is for a MacOS SpriteKit project (Objective C) I'm working on involving the creation of a Leaderboard for a tournament. In the setup phase of the app, I have a visual list of competitors and I click on them one at a time to decide on match ups.
Mouse events will be captured by visual elements e.g. nodes in the scene or the scene itself. GKStateMachine is not a visual element so it doesn't make sense for it to handle mouse events. You could expect the mouse event captured by a visual element to trigger a state change.
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The project is to have a main window GUI with tabs, and the ability to tear off tabs into their own floating main windows. Exactly like the Chrome browser I'm using right now (probably most/all browsers do this). Using Windows 10, Python 3.7.7, PySide2 5.15.0.
I'm looking at similar questions here and elsewhere that use the native C++. They all seem to have one thing in common: Picking up mouse events on the tab.
I can create a subclassed QTabWidget and do all the things that pick up mouse events, for instance, putting a "installEventFilter()" in the class' "__init__()", and an "eventFilter()" function. Or simply overriding the "event()" function. I can pick up all kinds of events, including mouse events, but not on the tabs. Click/move in the tab view, yes; click/move next to the existing tabs on the tab bar, yes; but click/move on the tabs themselves produces "Paint" events. This is correct, as the tab view must be repainted when the tab is selected. But I can't pick up a mouse event for use in the dragging techniques I see in the C++ code. I can't pick up the mouse event that results in the Paint event.
Apparently, in native C++, the mouse events can be intercepted before they get to the tabs. I'm not seeing a way to intercept mouse events on the tabs in PySide2.
I'm trying to program something to read voltage from the Labview ULx library and add the voltage into an array. I tried to do so using an event structure while setting a boolean button 's mechanical action to "Latch when pressed". However, the "Latch when pressed" option seems doesn't work and the program reads the voltage and adds it to the array correctly and it freezes.
front panel
Block diagram:
When you use a Value Changed event with a latched Boolean control, you need to read the control's value inside the event structure in order to reset the latch.
Just move the Sample control's terminal inside the event structure, then it should work as you expect.
Tip: you are free to use the Latch When Pressed action if you want, but the standard action for UI buttons in the OS (Windows etc) is actually Latch When Released. You can check this by clicking on a button, dragging the mouse pointer off the button and then releasing it - the button shouldn't operate. You might want to decide which one makes more sense for your application.
I've been looking for awhile now to no avail for this.
What I'm trying to do is find a way to detect if a mouse icon changes when you mouse over something.
For example: If you mouse over a link it changes from the arrow to a finger.
My plan is to grab the ID of a window, and scan it for clickable objects based on the mouse icon changing. I can grab the window, bring it to the front, and move the mouse around by setting the x,y coord of the mouse, but I don't see a way to detect if the mouse has found anything.
I would prefer this to be something built into vb.net, but if I have to use an API I'm fine with that.
The approach is wrong because the concepts are different from what you observe visually.
There's no such thing as "click" -- there's Button Down event (Windows message sent by the GUI subsystem to the application), Button Up event and Mouse Move event. If there were Button Down and Button Up with no or little Mouse Move, then the OS considers this a click.
All events are sent to the window under the mouse cursor hotspot unless the mouse input is captured by the other window.
When the cursor is moved over the window, the OS sends WM_NCHITTEST message to the window to determine, how the window treats the area under the cursor. Based on window's response Windows either performs the window operation (window move or resize etc) or passes mouse-related events to the window procedure. The procedure then decides how to react - do nothing, make visual changes, perform some action etc.
As you can see from the description, cursor change and actual actions are two different loosely related operations. There can be an action without cursor change or cursor change without an action.
Final goal is to prevent mouse move to another screen (dual display setup) unless a hotkey is held.
The best I came up with, is this:
[NSEvent addGlobalMonitorForEventsMatchingMask:NSMouseMovedMask handler:^(NSEvent *mouseMovedEvent) {
// does nothing yet
}]
The reason I went for global monitor is that my app does not have any windows (and views), it's a status bar app. So NSTrackingArea went home.
Any help would be much appreciated. In Java world, I would simply preventDefault() the event object. Now I need to get the same functionality in Objective-C. Ideally, I'd wish there would be "MouseMovedPastScreen" event, but apparently there's not.
Thanks.
EDIT
Again, in Java, I would get the bounds of both screens, and stopped mouse at the corner positions. And then would allow the event to bubble if the ⌘ key has been held during the event execution.
Controlling the mouse cursor From the Quartz Display Services programming guide. Particularly
CGAssociateMouseAndMouseCursorPosition (false);
I am using cocos2d. I would like to be able to detect whether the screen is touched at a particular instant - that is, rather than intercepting an event when it occurs, I want to detect the presence of touch at a particular moment.
The reason is that I am animating sprites and want to determine if the sprite should keep moving - if the screen is still touched. I cannot use ccTouchesEnded because each time an animation starts I set isTouchEnabled to false because I also want the user to be able to tap rapidly on the screen to move the sprite but if they tapped too rapidly, it would mess with the position of the sprite during the animation process - which I have found screws up the positions of my objects in weird ways.
Is this possible?
There does not appear to be any public API to detect touches other than enabling and receiving these events in the main UI run loop.
You can keep handling events, and set the state left by the last touch event in a model object or global variables. Then you can poll your app's own internal state at any time.
Instead of disabling touches, you can just have your touch handler not do inappropriate things if the event time stamp is too close to some animation start time.