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Check a checkbox with the space bar

#1
Hi,

i have the following XAML and can't seem to figure out how to make the
checkbox react to the space bar.

<ListView Height="132" Margin="35,0,20,48" Name="m_listViewEvents"
VerticalAlignment="Bottom">
<ListView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Path=Items}">
<StackPanel Orientation="Horizontal">
<CheckBox IsChecked="{Binding Path=IsSelected}"
Margin="1,1,4,1"/>
<TextBlock Text="{Binding Path=Text}"
Margin="1,1,4,1"/>
</StackPanel>
</HierarchicalDataTemplate>
</ListView.ItemTemplate>
</ListView>
 

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M

Motonari Ito

#2
Hi,

> i have the following XAML and can't seem to figure out how to make the
> checkbox react to the space bar.
I have the same problem - any help would be appreciated. The minimal
reproducible code is here:

<ListBox ItemsSource="{x:Static Fonts.SystemFontFamilies}">
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox>
<TextBlock Text="{Binding Source}"/>
</CheckBox>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>

As it turns out, a space bar does not work because key focus is not on a
check box but on ListBoxItem. If I hit [TAB] to move the focus to the check
box, then it works.

Keyboard operation is essential for my application. Please, please help me.

Thank you.
 

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L

Lemming

#3
Hello,

Unfortunately, this simple looking scenario is not easy to solve, it's
actually pretty complicated because getting the elements defined inside a
DataTemplate is changes the behaviour of the ItemsControl (it adds an idea of
"checkability" to an ItemsControl which only support "selectability").

For your scenario, consider StackPanels or WrapPanels which would contain
CheckBoxes for each of your items. Something like the following:

<StackPanel KeyboardNavigation.DirectionalNavigation="Contained">
<CheckBox>One</CheckBox>
<CheckBox>Two</CheckBox>
<CheckBox>Three</CheckBox>
<CheckBox>Four</CheckBox>
</StackPanel>
 

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