/// <summary>
/// Default the Window Icon to the icon stored in the .exe, if any.
///
/// The Icon can be overriden by callers by calling SetIcon themselves.
/// </summary>
void SetIcon()
{
var processPath = Environment.ProcessPath;
if (!string.IsNullOrEmpty(processPath))
{
var index = IntPtr.Zero; // 0 = first icon in resources
_windowIcon = ExtractAssociatedIcon(IntPtr.Zero, processPath, ref index);
if (_windowIcon != IntPtr.Zero)
{
var appWindow = AppWindow.GetFromWindowId(Win32Interop.GetWindowIdFromWindow(WindowHandle));
if (appWindow is not null)
{
var iconId = Win32Interop.GetIconIdFromIcon(_windowIcon);
appWindow.SetIcon(iconId);
}
}
}
}