Window loses shadow [EnableDWMDropShadow]

[arnoldpa]

Hey,
i noticed the following (wrong) behavior:
The MetroWindow loses sometimes its shadow [EnableDWMDropShadow="True"] if the application loses the focus.
Sometimes if it shows a tooltip or e.g. a ComboBox shows it items.

The shadow does not come back until application restart.

OS: Win7 x64
MahApps.Metro: latest nuget - 1.0.1-ALPHA47

Screenshot:

Here is my minimal example:
MainWindow:

<controls:MetroWindow x:Class="WpfApplication1.MainWindow"
                      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                      xmlns:controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
                      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                      mc:Ignorable="d"
                      Title="MainWindow"
                      Height="350"
                      Width="525"
                      EnableDWMDropShadow="True"
                      BorderThickness="1"
                      BorderBrush="{DynamicResource AccentColorBrush}">
    <StackPanel Margin="15">
        <TextBlock Text="ComboBox 1"/>
        <ComboBox SelectedIndex="0" ToolTip="Hello world 1!">
            <ComboBoxItem>Item 1</ComboBoxItem>
            <ComboBoxItem>Item 2</ComboBoxItem>
            <ComboBoxItem>Item 3</ComboBoxItem>
            <ComboBoxItem>Item 4</ComboBoxItem>
        </ComboBox>

        <TextBlock Text="ComboBox 2"/>
        <ComboBox SelectedIndex="0" ToolTip="Hello world 2!">
            <ComboBoxItem>Item 1</ComboBoxItem>
            <ComboBoxItem>Item 2</ComboBoxItem>
            <ComboBoxItem>Item 3</ComboBoxItem>
            <ComboBoxItem>Item 4</ComboBoxItem>
        </ComboBox>
    </StackPanel>
</controls:MetroWindow>

App:

<Application x:Class="WpfApplication1.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Colors.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

[maheshniec]

Hi, EnableDWMDropShadow is still required for modal dialogs I presume. EnableDWMDropShadow is not working when window is not focused. Window glow should be blinked when user clicks on owner window when modal dialog is opened. But it is not happening.

[punker76]

@maheshniec EnableDWMDropShadow is also working when window is not focused

you can create an issue for the blinking window...