WPF learning path (5) Example: wordboard, wpf path

WPF learning path (5) Example: wordboard, wpf path

Wordpad instance 1

 

MainWindow. xaml

<Window x:Class="Wordpad01.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="WordPad1.0" Height="350" Width="525">    <Grid>        <Grid.RowDefinitions>            <RowDefinition Height="Auto" />            <RowDefinition Height="Auto" />            <RowDefinition Height="*" />        </Grid.RowDefinitions>        <Menu Grid.Row="0">            <MenuItem Header="File" />            <MenuItem Header="Copy" />            <MenuItem Header="Paste" />            <MenuItem Header="Cut" />            <MenuItem Header="Delete" />        </Menu>        <ToolBar Grid.Row="1">            <Button>                <Image Source="/Images/Copy.png" />            </Button>            <Button>                <Image Source="/Images/Paste.png" />            </Button>            <Button>                <Image Source="/Images/Cut.png" />            </Button>            <Button>                <Image Source="/Images/Delete.png" />            </Button>        </ToolBar>        <TextBox x:Name="text" Grid.Row="2" Text="WordPad" FontSize="30" HorizontalAlignment="Center" VerticalAlignment="Center" />    </Grid></Window>

 

Mainly relies on Clipboard class implementation

Add the Click Time for the Button

<MenuItem Header = "Copy" Click = "CopyClick"/>

<Button Click = "CopyClick">

private void CopyClick(object sender, RoutedEventArgs e){    if (text.Text != null && text.Text.Length > 0)    {        Clipboard.SetText(text.Text);    }}private void PasteClick(object sender, RoutedEventArgs e){    if (Clipboard.ContainsText())    {        text.Text = Clipboard.GetText();    }}private void CutClick(object sender, RoutedEventArgs e){    CopyClick(sender, e);    DeleteClick(sender, e);}private void DeleteClick(object sender, RoutedEventArgs e){    text.Text = null;}

 

Right-click menu

<TextBox x:Name="text" Grid.Row="2" Text="WordPad" FontSize="30" TextWrapping="Wrap" Height="Auto" Width="Auto" Margin="5">            <TextBox.ContextMenu>                <ContextMenu>                    <MenuItem Header="Copy" Click="CopyClick" />                    <MenuItem Header="Paste" Click="PasteClick" />                    <MenuItem Header="Cut" Click="CutClick" />                    <MenuItem Header="Delete" Click="DeleteClick" />                </ContextMenu>            </TextBox.ContextMenu>
</TextBox>

 

Add the shortcut key KeyGesture

private KeyGesture gestCopy = new KeyGesture(Key.C, ModifierKeys.Control);private KeyGesture gestPaste = new KeyGesture(Key.V, ModifierKeys.Control);private KeyGesture gestCut = new KeyGesture(Key.X, ModifierKeys.Control);private KeyGesture gestDelete= new KeyGesture(Key.Delete);protected override void OnPreviewKeyDown(KeyEventArgs e){    base.OnPreviewKeyDown(e);    e.Handled = true;    if (gestCopy.Matches(null, e))    {        CopyClick(this, e);    }    else if (gestPaste.Matches(null, e))    {        PasteClick(this, e);    }    else if (gestCut.Matches(null, e))    {        CutClick(this, e);    }    else if (gestDelete.Matches(null, e))    {        DeleteClick(this, e);    }}

 

Add Status Control

Menu Bar

<MenuItem Header="File" SubmenuOpened="MenuItem_SubmenuOpened"/><MenuItem x:Name="copyItem" Header="Copy" Click="CopyClick" /><MenuItem x:Name="pasteItem" Header="Paste" Click="PasteClick" /><MenuItem x:Name="cutItem" Header="Cut" Click="CutClick" /><MenuItem x:Name="deleteItem" Header="Delete" Click="DeleteClick" />

private void MenuItem_SubmenuOpened(object sender, RoutedEventArgs e){　　cutItem.IsEnabled = copyItem.IsEnabled = deleteItem.IsEnabled    　　= text.Text != null && text.Text.Length > 0;　　pasteItem.IsEnabled = Clipboard.ContainsText();
}

Similarly, TextBox

<TextBox x: Name = "text" ContextMenuOpening = "text_ContextMenuOpening">

The shortcut key is the same as the toolbar.

 

A simple WordPad program has been completed, but is it difficult to find it? In the next issue, we will update WordPad2.0.

 

 

 

 

 

 

 

 

 

 

 

 

To be continue...