In WPF, how do I darken all screen area when opening a new window?
Also after the window is closed, how do I revert the temporary effect?
Here is my version, if you want gray out and blur the parent window:
private void btnOpenSettings_Click(object sender, RoutedEventArgs e)
{
// settings for the parent window
// set the transparency to the half
this.Opacity = 0.5;
// blur the whole window
this.Effect = new BlurEffect();
// Set the options for the settings (child) window
SettingsForm wdwSettings = new SettingsForm()
{
Owner = this,
ShowInTaskbar = false,
Topmost = true
};
// Open the child window
wdwSettings.ShowDialog();
//restore Opacity and remove blur after closing the child window
this.Opacity = 1;
this.Effect = null;
}