public static extern IntPtr GetWindowRect(IntPtr hWnd, ref RECT rect);
/// <summary>
/// Enumerates all the hints from the given window
/// </summary>
/// <param name="hWnd">The window to get hints from</param>
/// <param name="hintFactory">The factory to use to create each hint in the session</param>
/// <returns>A hint session</returns>
private HintSession EnumWindowHints(IntPtr hWnd, Func<IntPtr, Rect, AutomationElement, Hint> hintFactory)
{
var result = new List<Hint>();
var elements = EnumElements(hWnd);
// Window bounds
var rawWindowBounds = new RECT();
User32.GetWindowRect(hWnd, ref rawWindowBounds);
Rect windowBounds = rawWindowBounds;
foreach (AutomationElement element in elements)
{
var boundingRectObject = element.GetCurrentPropertyValue(AutomationElement.BoundingRectangleProperty, true);
if (boundingRectObject == AutomationElement.NotSupported)
{
// Not supported
continue;
}
var boundingRect = (Rect)boundingRectObject;
if (boundingRect.IsEmpty)
{
// Not currently displaying UI
continue;
}
// Convert the bounding rect to logical coords
var logicalRect = boundingRect.PhysicalToLogicalRect(hWnd);
if (!logicalRect.IsEmpty)
{
var windowCoords = boundingRect.ScreenToWindowCoordinates(windowBounds);
var hint = hintFactory(hWnd, windowCoords, element);
if (hint != null)
{
result.Add(hint);
}
}
}
return new HintSession
{
Hints = result,
OwningWindow = hWnd,
OwningWindowBounds = windowBounds,
};
}