protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
var helper = new WindowInteropHelper(this);
MiscTools.SetWindowLong(helper.Handle, MiscTools.GwlExstyle,
MiscTools.GetWindowLong(helper.Handle, MiscTools.GwlExstyle) | 0x08000000);
}
protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
//Set the window style to noactivate.
var helper = new WindowInteropHelper(this);
MiscTools.SetWindowLong(helper.Handle, MiscTools.GwlExstyle,
MiscTools.GetWindowLong(helper.Handle, MiscTools.GwlExstyle) | 0x00000080 | 0x00000020);
}