回答編集履歴
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見直しキャンペーン中
test
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`new AdditionalWindow()`や`new MainWindow()`が散見されますが、RyosukeKamimuraさんが意図している動作ではないと思います。
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newするということは別のウィンドウを作るということです。操作しようとしているものとは別のインスタンスです。
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`AdditionalWindow`が複数出る必要がない場合、ひとつだけnewし表示非表示で管理すると楽です。
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あと https://teratail.com/questions/233943 で[PropertyGrid](https://github.com/xceedsoftware/wpftoolkit/wiki/PropertyGrid)を使ったのは単にUIを作るのがだるかったからですが、
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あと https://teratail.com/questions/233943 で[PropertyGrid](https://github.com/xceedsoftware/wpftoolkit/wiki/PropertyGrid)を使ったのは単にUIを作るのがだるかったからですが、自分で言うのもなんですが使いにくくないですか?^^;
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自分で言うのもなんですが使いにくくないですか?^^;
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[IntegerUpDown](https://github.com/xceedsoftware/wpftoolkit/wiki/IntegerUpDown)とか[ColorPicker](https://github.com/xceedsoftware/wpftoolkit/wiki/ColorPicker)でUIを作っていただくのがベストですが、自分でもイライラしたのでPropertyGridを少々改良しました。
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変更したファイルのみ
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MainWindow.xaml.cs
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```cs:MainWindow.xaml.cs
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```C#
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using System;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using Microsoft.Win32;
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namespace WpfApp4
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{
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public partial class MainWindow : Window
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{
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public string FilePath = null;
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private AdditionalWindow additionalWindow = new AdditionalWindow();
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public MainWindow() => InitializeComponent();
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private void button_Click(object sender, RoutedEventArgs e)
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{
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additionalWindow.Show();
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additionalWindow.Owner = this;
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}
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private void button_open_Click(object sender, RoutedEventArgs e)
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{
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OpenFileDialog openFileDialog = new OpenFileDialog();
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if(openFileDialog.ShowDialog() == true)
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{
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FilePath = openFileDialog.FileName;
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BitmapImage bitmapImage = new BitmapImage(new Uri(FilePath));
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imageBox.Source = bitmapImage;
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}
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}
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private void Canvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if(e.ClickCount == 2)
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{
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var textBox = new TextBoxEx
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{
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Style = FindResource("TextBoxStyle") as Style,
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CanvasLeft = e.GetPosition(canvas).X,
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CanvasTop = e.GetPosition(canvas).Y,
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Foreground = new SolidColorBrush(Colors.Red), // 雑い^^;
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Background = new SolidColorBrush(),
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};
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textBox.GotFocus += TextBox_GotFocus;
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canvas.Children.Add(textBox);
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}
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}
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private void DelMenuItem_Click(object sender, RoutedEventArgs e)
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{
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if(sender is MenuItem menuItem)
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{
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if(menuItem.Parent is ContextMenu contextMenu)
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{
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if(contextMenu.PlacementTarget is TextBoxEx textBox)
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{
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additionalWindow.propertyGrid.SelectedObject = null;
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textBox.GotFocus -= TextBox_GotFocus;
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canvas.Children.Remove(textBox);
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}
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}
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}
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}
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private void TextBox_GotFocus(object sender, RoutedEventArgs e)
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{
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additionalWindow.propertyGrid.SelectedObject = sender;
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}
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}
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}
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```
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AdditionalWindow.xaml
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```xml:AdditionalWindow.xaml
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```xaml
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<Window
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x:Class="WpfApp4.AdditionalWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
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Title="AdditionalWindow"
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Width="350"
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Height="450"
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Closing="Window_Closing">
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<Grid>
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<xctk:PropertyGrid
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x:Name="propertyGrid"
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AutoGenerateProperties="False"
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ShowSearchBox="False"
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ShowSortOptions="False"
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ShowSummary="False"
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ShowTitle="False">
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<xctk:PropertyGrid.EditorDefinitions>
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<xctk:EditorDefinition>
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<xctk:EditorDefinition.PropertiesDefinitions>
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<xctk:PropertyDefinition Name="Background" />
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<xctk:PropertyDefinition Name="Foreground" />
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</xctk:EditorDefinition.PropertiesDefinitions>
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<xctk:EditorDefinition.EditorTemplate>
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<DataTemplate>
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<xctk:ColorPicker SelectedColor="{Binding Value.Color}" />
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</DataTemplate>
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</xctk:EditorDefinition.EditorTemplate>
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</xctk:EditorDefinition>
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</xctk:PropertyGrid.EditorDefinitions>
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<xctk:PropertyGrid.PropertyDefinitions>
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<xctk:PropertyDefinition Name="CanvasLeft" />
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<xctk:PropertyDefinition Name="CanvasTop" />
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<xctk:PropertyDefinition Name="Text" />
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<xctk:PropertyDefinition Name="Background" />
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<xctk:PropertyDefinition Name="FontFamily" />
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<xctk:PropertyDefinition Name="FontSize" />
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<xctk:PropertyDefinition Name="FontStretch" />
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<xctk:PropertyDefinition Name="FontStyle" />
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<xctk:PropertyDefinition Name="FontWeight" />
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<xctk:PropertyDefinition Name="Foreground" />
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</xctk:PropertyGrid.PropertyDefinitions>
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</xctk:PropertyGrid>
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</Grid>
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</Window>
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```
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AdditionalWindow.xaml.cs
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```cs:AdditionalWindow.xaml.cs
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```C#
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using System.ComponentModel;
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using System.Windows;
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namespace WpfApp4
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{
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public partial class AdditionalWindow : Window
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{
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public AdditionalWindow() => InitializeComponent();
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private void Window_Closing(object sender, CancelEventArgs e)
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{
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// 閉じずに非表示にする
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e.Cancel = true;
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Hide();
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}
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}
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}
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```
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