/// <summary>
/// Refresh the list of <see cref="Window"/>
/// </summary>
/// <param name="refreshDesktopWindowOnly">Defines whether we must only refresh the desktop window information.</param>
internal void RefreshWindows(bool refreshDesktopWindowOnly = false)
{
if (!refreshDesktopWindowOnly)
{
WindowsList.Clear();
WindowsListChanged?.Invoke(this, new EventArgs());
}
_refreshDesktopWindowOnly = refreshDesktopWindowOnly;
Requires.VerifySucceeded(NativeMethods.EnumWindows(EnumWindowsCallback, 0));
}
/// <summary>
/// Callback used everytime a window is detected when we call EnumWindows
/// </summary>
/// <param name="windowHandle">The handle of the window</param>
/// <param name="lParam">The application-defined value given in EnumWindows or EnumDesktopWindows.</param>
/// <returns>True to continue to search for windows</returns>
private bool EnumWindowsCallback(IntPtr windowHandle, int lParam)
{
// Check if the window is visible, has a border or not, has a title, is the main window of the app (so we ignore the child windows and dialog box)
var windowStyle = NativeMethods.GetWindowLongA(windowHandle, Consts.GWL_STYLE);
var isApplicationWindow = (windowStyle & Consts.TARGETWINDOW) == Consts.TARGETWINDOW;
var isDesktopWindow = windowHandle == NativeMethods.GetShellWindow();
var isVisible = NativeMethods.IsWindowVisible(windowHandle) && NativeMethods.IsWindow(windowHandle);
var isChainVisible = IsWindowChainVisible(windowHandle);
var isInIgnoreList = _windowHandlesToIgnore.Contains(windowHandle);
if (!isVisible || !isChainVisible || isInIgnoreList || (!isApplicationWindow && !isDesktopWindow) || (_refreshDesktopWindowOnly && !isDesktopWindow))
{
return(true); //continue enumeration
}
if (isDesktopWindow)
{
DesktopWindow = new Window(windowHandle, string.Empty, null, string.Empty, null, false);
return(true); //continue enumeration
}
var stringBuilder = new StringBuilder(256);
NativeMethods.GetWindowText(windowHandle, stringBuilder, stringBuilder.Capacity);
if (string.IsNullOrEmpty(stringBuilder.ToString()))
{
return(true); //continue enumeration
}
var window = GetWindowInformation(windowHandle);
if (window != null)
{
WindowsList.Add(window);
WindowsListChanged?.Invoke(this, new EventArgs());
}
return(true); //continue enumeration
}
