Question

Is there a way to set the default cursor for a control type at the application level? I’d like to say that all Button controls, regardless of whether or not they have a specific style, have a default cursor of the hand cursor unless it’s overridden in that button’s individual style specification.

Here’s an example of such a button with its own style that I’d like to override the default

<UserControl>
    <UserControl.Resources>
        <Style x:Key="CloseButtonStyle" TargetType="{x:Type Button}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Grid>
                            <!-- My button's custom content here -->
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>

    <Button x:Name="btnClose" Style="{DynamicResource CloseButtonStyle}"/>
</UserControl>

Answer 1

Put the style below in Application.Resources in your App.xaml file.

<Style TargetType="Button">
  <Setter Property="Cursor" Value="Hand"/>
</Style>

UPDATE

In regards to the 3rd comment:
To achieve that, you need to leave just your control template in UserControl.Resources:

<ControlTemplate x:Key="CloseButtonTemplate" TargetType="{x:Type Button}">
   <Grid>
      <!-- My button's custom content here -->
   </Grid>
</ControlTemplate>

Then set Template property for Button:

<Button Template="{DynamicResource CloseButtonTemplate}"/>