user-interaction

could the SelectionChanged event in WPF be handled only for user interaction?

由 穿精又带淫゛_ 提交于 2019-11-28 00:32:11
问题 I would like to handled SelectionChanged event in WPF DataGrid element for user interaction/selection only and skip if it's due to binding or other set values. Any idea how I will determine if the Selection is changed by user interaction? Or any alternate event that would do similar task? 回答1: Maybe try combine SelectionChanged event with PreviewMouseDown event. When user click a row you set some property and in SelectionChanged event handler check if than property was changed. Sample code

WatchKit API for Force Touch / Digital Crown?

由 ⅰ亾dé卋堺 提交于 2019-11-27 21:33:38
问题 I'm very excited about the new user interaction possibilities introduced by the Apple Watch, among them, Force Touch and Digital Crown. However, I couldn't find mentions of them in the WatchKit API. Are there any ways to receive events from Force Touch / Digital Crown? Is it possible to have custom handlers for the events? 回答1: watchOS 3 adds WKCrownSequencer and WKCrownDelegate to report the state of the digital crown (such as rotational speed), as well as to receive notifications when the

How can a C# Windows Console application tell if it is run interactively

由 半腔热情 提交于 2019-11-27 12:44:04
How can a Windows console application written in C# determine whether it is invoked in a non-interactive environment (e.g. from a service or as a scheduled task) or from an environment capable of user-interaction (e.g. Command Prompt or PowerShell)? Environment.UserInteractive Property To determine if a .NET application is running in GUI mode: bool is_console_app = Console.OpenStandardInput(1) != Stream.Null; I haven't tested it, but Environment.UserInteractive looks promising. If all you're trying to do is to determine whether the console will continue to exist after your program exits (so

How to preprocess a local CSV file before uploading to a server?

由 北城余情 提交于 2019-11-27 07:28:35
问题 I am trying to set up a web page where trusted users can upload local CSV files that will be parsed, validated, reviewed by the users, and then inserted into various tables on a MySQL database. The rest of the site is written using PHP and jQuery. I know how to read a CSV file into PHP and generate a query. The problem is that the validation and parsing of the file is interactive-- the user needs to be asked for various information about the data, match up columns from the file with fields in

How to disable touch input to all views except the top-most view?

由 怎甘沉沦 提交于 2019-11-26 17:29:47
I have a view with multiple subviews. When a user taps a subview, the subview expands in size to cover most of the screen, but some of the other subviews are still visible underneath. I want my app to ignore touches on the other subviews when one of the subviews is "expanded" like this. Is there a simple way to achieve this? I can write code to handle this, but I was hoping there's a simpler built-in way. Hope this help... [[yourSuperView subviews] makeObjectsPerformSelector:@selector(setUserInteractionEnabled:) withObject:[NSNumber numberWithBool:FALSE]]; which will disable userInteraction of

How can a C# Windows Console application tell if it is run interactively

由 ▼魔方 西西 提交于 2019-11-26 16:13:53
问题 How can a Windows console application written in C# determine whether it is invoked in a non-interactive environment (e.g. from a service or as a scheduled task) or from an environment capable of user-interaction (e.g. Command Prompt or PowerShell)? 回答1: Environment.UserInteractive Property 回答2: To determine if a .NET application is running in GUI mode: bool is_console_app = Console.OpenStandardInput(1) != Stream.Null; 回答3: I haven't tested it, but Environment.UserInteractive looks promising.

How to create a resizable rectangle with user touch events on Android?

由 ≡放荡痞女 提交于 2019-11-26 14:15:40
I want to create a rectangular shape that will be resized with the touches of the user. Below image is a good example of what i want to do: Is there any example like that? What do I need to study to implement this? Thanks in advance, To implement a custom view, you derive a class from View :) Override onDraw() for looks, override onTouchEvent() for input processing. Note that in Android, you cannot draw on view outside onDraw() ; if you want to refresh the view, call invalidate() . You can implement draggable corners as separate views. For looks, just use ready-made images (feel free to derive

How to detect swipe direction between left/right and up/down

由 烈酒焚心 提交于 2019-11-26 10:15:57
My Question: How do I detect when a user moves their finger up/down vs left/right (and how do I know which direction of those groups their finger moved)? My Situation: I want to change the brightness of my app when they move their finger up and down (up = brighter, down = darker), and I want to switch between activities and/or views based on their left/right swipe. Ice Box You simply have to extend SimpleOnGestureListener class, Declare this in your class, private static final int SWIPE_MIN_DISTANCE = 120; private static final int SWIPE_MAX_OFF_PATH = 250; private static final int SWIPE

How to disable touch input to all views except the top-most view?

由 China☆狼群 提交于 2019-11-26 05:28:15
问题 I have a view with multiple subviews. When a user taps a subview, the subview expands in size to cover most of the screen, but some of the other subviews are still visible underneath. I want my app to ignore touches on the other subviews when one of the subviews is \"expanded\" like this. Is there a simple way to achieve this? I can write code to handle this, but I was hoping there\'s a simpler built-in way. 回答1: Hope this help... [[yourSuperView subviews] makeObjectsPerformSelector:@selector
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