busyindicator

问题 I made an RShiny app with a lengthy computation. The lengthy computation leaves the screen at a standstill, and I am worried that either the computation came up blank, or that the connection timed out, or something else might have happened. Is there a way to show an indicator (ie rotating hour glass, etc) on the screen to show the user that processing is ongoing. 回答1: You could add a progress bar. http://shiny.rstudio.com/reference/shiny/1.2.0/Progress.html. This might take a bit of

问题 I am trying to implement busy indicator using ProgressIndicator. But when the heavy load starts the indicator freezes. A sample code is shown below. import javafx.beans.value.ChangeListener; import javafx.scene.Scene; import javafx.scene.control.ProgressIndicator; import javafx.scene.layout.StackPane; import javafx.scene.paint.Color; import javafx.stage.Modality; import javafx.stage.Stage; import javafx.stage.StageStyle; public class BusyIcon { private static Stage busyWindow; public static

问题 I am trying to implement busy indicator using ProgressIndicator. But when the heavy load starts the indicator freezes. A sample code is shown below. import javafx.beans.value.ChangeListener; import javafx.scene.Scene; import javafx.scene.control.ProgressIndicator; import javafx.scene.layout.StackPane; import javafx.scene.paint.Color; import javafx.stage.Modality; import javafx.stage.Stage; import javafx.stage.StageStyle; public class BusyIcon { private static Stage busyWindow; public static

问题 I am using some 3rd party components that take some time (~3-5s) to render - after profiling I've come to conclusion that most of the time is wasted in MeasureOverride and Render methods of those controls... I cannot edit source code of those components. The problem is .. can I display a busy indicator while the interface is being 'drawn' ? Is it possible in WPF? 回答1: No you can't, well, not in a good way. The UI thread is busy rendering - drawing the busy indicator would require that same

问题 I have modified code, but now I have another problem. The InvalidOperation exception occurs inside if statement on validating user info. It says that the calling thread cannot access this object because a different thread owns it.Any sugestions? private void finishConfigButton_Click(object sender, RoutedEventArgs e) { BackgroundWorker worker = new BackgroundWorker(); worker.WorkerSupportsCancellation = true; bool validated = false; errorLabel.Visibility = System.Windows.Visibility.Collapsed;

问题 I have a custom control that is used for long time processes. This control has spinning circles around a point. To do this, I am using timer that is working on design time and run-time. When one control is added to form there is no problem. But two of them are added to form, the designer slows down so much. Why does this problem occurs and how can I fix it? My code from this project: public class SpinningCircles : Control { bool fullTransparency = true; int increment = 1; int radius = 4; int

问题 I'm working on a WPF project with the beginning of a UserControl defined as: <UserControl x:Class="" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:converters="clr-namespace:.Modules.Converters" xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit/extended"

问题 I'm working on a WPF project with the beginning of a UserControl defined as: <UserControl x:Class="" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:converters="clr-namespace:.Modules.Converters" xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit/extended"

问题 Note : I have read almost all the discussions on this object in shiny googlegroups and here in SO. I need an indicator that shows the shiny server is busy. I have tried shiny incubator, however, the problem is that I can't set a max for progress bar. I don't want something like this : http://shiny.rstudio.com/gallery/progress-example.html What I need is something that: 1- shows a busy indicator message and bar (i.e just a simple animated bar, do not need to show a filling bar) as long as the

问题 I have a problem with the busyindicator control of silverlight. I have a datagrid (datagrid1) with its source set to a wcf service (client). I would like to use the busyindicator control (bi) of silvelright toolkit when the datagrid loads itself. But I have an "Invalid cross thread access" when I use "ThreadPool". Sub LoadGrid() Dim caisse As Integer = ddl_caisse.SelectedValue Dim env As Integer = ddl_env.SelectedValue bi.IsBusy = True ThreadPool.QueueUserWorkItem(Sub(state) AddHandler client