public SessionChangeHandler(IPInvokeHandler pinvokeHandler)
{
this.pinvokeHandler = pinvokeHandler;
_registered = true;
if (!pinvokeHandler.WTSRegisterSessionNotification(this.Handle, PInvoker.NOTIFY_FOR_THIS_SESSION))
{
_registered = false;
Log.Warning($"Problem registering session notification. Problem might arise with lock screen. error: {pinvokeHandler.GetLastError()}");
}
}
/// <summary>
/// Validates if an specific hWnd could probably be handled by WindowNode
/// </summary>
/// <param name="hWnd">window handler to validate</param>
/// <param name="validation">Instruction on what to validate</param>
/// <returns>true if it probably can</returns>
public bool CanHandleHwnd(IntPtr hWnd, ValidateHwndParams validation)
{
if (validation.DoValidate == false)
{
return(true);
}
if (hWnd == IntPtr.Zero)
{
return(false);
}
if (ShouldIgnoreHwnd(hWnd))
{
return(false);
}
var cb = new StringBuilder(1024);
var style = pinvokeHandler.GetWindowLongPtr(hWnd, PInvoker.GWL_STYLE).ToInt64();
var exstyle = pinvokeHandler.GetWindowLongPtr(hWnd, PInvoker.GWL_EXSTYLE).ToInt64();
if (style == 0)
{
Log.Warning($"{nameof(WindowNode)}.{nameof(CanHandleHwnd)} Could not retrieve GWL_STYLE for hWnd {hWnd}, error: {pinvokeHandler.GetLastError()}");
return(false);
}
if (validation.ValidateChild && (style & PInvoker.WS_CHILD) == PInvoker.WS_CHILD)
{
return(false);
}
if (validation.ValidateVisible && (style & PInvoker.WS_VISIBLE) != PInvoker.WS_VISIBLE)
{
return(false);
}
if (validation.ValidateNoActivate && (exstyle & PInvoker.WS_EX_NOACTIVATE) == PInvoker.WS_EX_NOACTIVATE)
{
return(false);
}
if (pinvokeHandler.GetClassName(hWnd, cb, cb.Capacity) == 0)
{
Log.Warning($"{nameof(WindowNode)}.{nameof(CanHandleHwnd)} Could not retrieve class name for hWnd {hWnd}, error: {pinvokeHandler.GetLastError()}");
return(false);
}
var className = cb.ToString();
if (classNamesToIgnore.Any(regex => regex.IsMatch(className)))
{
return(false);
}
if (validation.ValidateApplicationFrame && className == "ApplicationFrameWindow")
{
if (IsSpecialAppVisible(hWnd) == false)
{
Log.Warning($"{nameof(WindowNode)}.{nameof(CanHandleHwnd)} Going to ignore {hWnd} \"{GetWindowText(hWnd)}\" [{className}] because it is not visible according to window 10 special thingy");
return(false);
}
}
if (validation.ValidateDwm && className == "Windows.UI.Core.CoreWindow")
{
var result = 0;
if ((result = pinvokeHandler.DwmGetWindowAttribute(hWnd, DWMWINDOWATTRIBUTE.Cloaked, out bool pvAttribute, sizeof(int))) != 0 || pvAttribute)
{
return(false);
}
}
var text = GetWindowText(hWnd);
if (captionsToIgnore.Any(regex => regex.IsMatch(text)))
{
return(false);
}
return(true);
}