/// <summary>
/// Returns the coordinates of the window and client area (including the Main Menu)
/// relative to the screen.
/// </summary>
/// <remarks>
/// This method exists since some windows (e.g., Calculator main window) report
/// a window size that is smaller than it really is.
/// </remarks>
public static bool GetWindowRectangles(
Logger logger,
IntPtr window,
out SafeNativeMethods.RECT windowRectangle,
out SafeNativeMethods.RECT clientRectangle)
{
string traceMsg = Tracer.FormatCall("GetWindowRectangles", window);
ArgumentGuard.NotNull(logger, nameof(logger));
try
{
logger.Log(traceMsg);
windowRectangle = clientRectangle = new SafeNativeMethods.RECT();
SafeNativeMethods.WINDOWINFO wi = new SafeNativeMethods.WINDOWINFO();
wi.cbSize = (uint)Marshal.SizeOf(typeof(SafeNativeMethods.WINDOWINFO));
if (!SafeNativeMethods.GetWindowInfo(window, ref wi))
{
logger.Log(
"{0}: GetWindowInfo failed ({1})",
traceMsg,
Marshal.GetLastWin32Error());
return(false);
}
windowRectangle = wi.rcWindow;
clientRectangle = wi.rcClient;
// We assume that border width and height is symmetric...
const SafeNativeMethods.WindowStyles CaptionFlag =
SafeNativeMethods.WindowStyles.WS_CAPTION;
if (CaptionFlag == (wi.dwStyle & CaptionFlag))
{
var border = (windowRectangle.Width - clientRectangle.Width) / 2;
clientRectangle.Top = windowRectangle.Top + border +
SystemInformation.CaptionHeight;
}
logger.Verbose("{0} succeeded", traceMsg);
return(true);
}
catch (Exception ex)
{
logger.Log("{0} failed: {1}", traceMsg, ex);
throw;
}
}
private void PeriodicActionHandler_()
{
if (!SafeNativeMethods.GetGUIThreadInfo(0, ref guiThreadInfo_))
{
return;
}
// report negative events
bool reportFocus = ReportExpired_(
ref focus_,
guiThreadInfo_.hwndFocus,
GuiEventTypes.WindowLostFocus);
bool reportActive = ReportExpired_(
ref active_,
guiThreadInfo_.hwndActive,
GuiEventTypes.WindowDeactivated);
// report positive events
FireWindowEvent_(reportActive, GuiEventTypes.WindowActivated, active_);
FireWindowEvent_(reportFocus, GuiEventTypes.WindowGotFocus, focus_);
// handle move & size
if (reportActive)
{
SafeNativeMethods.GetWindowRect(active_, out prev_);
}
else if (IntPtr.Zero != active_)
{
// the active window did not change, unless it is still moving / resizing
// lets check if its changed location or position
const uint GUI_INMOVESIZE = 0x2;
if (0 == (guiThreadInfo_.flags & GUI_INMOVESIZE))
{
SafeNativeMethods.RECT current = new SafeNativeMethods.RECT();
SafeNativeMethods.GetWindowRect(active_, out current);
FireWindowEvent_(
prev_.Left != current.Left || prev_.Top != current.Top,
GuiEventTypes.WindowMoved,
active_);
FireWindowEvent_(
prev_.Width != current.Width || prev_.Height != current.Height,
GuiEventTypes.WindowResized,
active_);
prev_ = current;
}
}
}
private void ResetState_()
{
active_ = IntPtr.Zero;
focus_ = IntPtr.Zero;
prev_ = new SafeNativeMethods.RECT();
}
