//------------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
#region Public Methods
// We will not always find the clickable point. There are times when it would take so long
// to locate the point that it is just not worth it, so make a reason effort than quit.
public static bool HitTestForClickablePoint(AutomationElement el, out Point pt)
{
Rect rect = el.Current.BoundingRectangle;
pt = new Point(0, 0);
if (rect.Left >= rect.Right || rect.Top >= rect.Bottom)
return false;
// if this is not on any monitor than there is no point in going on. If the element is
// off the screen hit testing actually works and would end up returning a point offscreen.
NativeMethods.RECT winRect = new NativeMethods.RECT((int)rect.Left, (int)rect.Top, (int)rect.Height, (int)rect.Bottom);
if (SafeNativeMethods.MonitorFromRect( ref winRect, SafeNativeMethods.MONITOR_DEFAULTTONULL ) == IntPtr.Zero)
return false;
// try the center point first
pt = new Point((rect.Left + rect.Right) / 2, (rect.Top + rect.Bottom) / 2);
AutomationElement hitElement;
if ( TryPoint( ref pt, el, out hitElement ) )
return true;
if ( IsTopLevelWindowObscuring( el, rect, hitElement ) )
return false;
// before we start hit testing more there are some control types that we know where the
// clickable point is or we know does not have a clickable point so take care of those here.
if ( el.Current.ControlType == ControlType.ScrollBar )
return false;
// Try the mid point of all four sides
pt = new Point(rect.Left + (rect.Width /2), rect.Top + 1);
if ( TryPoint( ref pt, el ) )
return true;
pt = new Point(rect.Left + (rect.Width /2), rect.Bottom - 1);
if ( TryPoint( ref pt, el ) )
return true;
pt = new Point( rect.Left + 1, rect.Top + (rect.Height /2) );
if ( TryPoint( ref pt, el) )
return true;
pt = new Point( rect.Right - 1, rect.Top + (rect.Height /2) );
if ( TryPoint( ref pt, el ) )
return true;
if ( TrySparsePattern( out pt, ref rect, el ) )
return true;
if ( TryLinePattern( out pt, ref rect, el ) )
return true;
return false;
}
override protected Rect GetBoundingRectangleCore()
{
Window window = (Window)Owner;
Rect bounds = new Rect(0,0,0,0);
if(!window.IsSourceWindowNull)
{
NativeMethods.RECT rc = new NativeMethods.RECT(0,0,0,0);
IntPtr windowHandle = window.CriticalHandle;
if(windowHandle != IntPtr.Zero) //it is Zero on a window that was just closed
{
try { SafeNativeMethods.GetWindowRect(new HandleRef(null, windowHandle), ref rc); }
// Allow empty catch statements.
#pragma warning disable 56502
catch(Win32Exception) {}
// Disallow empty catch statements.
#pragma warning restore 56502
}
bounds = new Rect(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
}
return bounds;
}
/// -------------------------------------------------------------------
/// <summary>
/// Get the window rect using the Win32 API GetWindowRect. If there is
/// a buddy control (ie. Spinner), then take the union of the element's
/// bounding rectangle, and the buddy controls bounding rectangle.
/// </summary>
/// -------------------------------------------------------------------
private void TS_GetWin32GetWindowRect(AutomationElement element, out Rect rectObject, CheckType checktype)
{
NativeMethods.RECT rcObject = new NativeMethods.RECT();
NativeMethods.RECT rcBuddy = new NativeMethods.RECT();
Rect rectBuddy = new Rect();
IntPtr intPtrElement = Helpers.CastNativeWindowHandleToIntPtr(element);
if (intPtrElement == IntPtr.Zero)
ThrowMe(checktype, "Could not get a window handle to the element");
// Get the AutomationElement Win32 bounding rectangle
SafeNativeMethods.GetWindowRect(intPtrElement, ref rcObject);
rectObject = new Rect(rcObject.left, rcObject.top, rcObject.right - rcObject.left, rcObject.bottom - rcObject.top);
// If this has a buddy control, get it and it's bounding rectangle
IntPtr hwndBuddy = Helpers.SendMessage(intPtrElement, NativeMethods.UDM_GETBUDDY, IntPtr.Zero, IntPtr.Zero);
if (hwndBuddy != IntPtr.Zero)
{
SafeNativeMethods.GetWindowRect(hwndBuddy, ref rcBuddy);
rectBuddy = new Rect(rcBuddy.left, rcBuddy.top, rcBuddy.right - rcBuddy.left, rcBuddy.bottom - rcBuddy.top);
rectObject = Rect.Union(rectBuddy, rectObject);
}
m_TestStep++;
}
internal static extern bool AdjustWindowRectExForDpi(
[In][Out] ref NativeMethods.RECT lpRect,
[In] int dwStyle,
[In][MarshalAs(UnmanagedType.Bool)] bool bMenu,
[In] int dwExStyle,
[In] int dpi);
private NativeMethods.POINT GetWindowScreenLocation(FlowDirection flowDirection)
{
Debug.Assert(IsSourceWindowNull != true, "IsSourceWindowNull cannot be true here");
NativeMethods.POINT pt = new NativeMethods.POINT(0, 0);
if (flowDirection == FlowDirection.RightToLeft)
{
NativeMethods.RECT rc = new NativeMethods.RECT(0, 0, 0, 0);
// with RTL window, GetClientRect returns reversed coordinates
SafeNativeMethods.GetClientRect(new HandleRef(this, CriticalHandle), ref rc);
// note that we use rc.right here for the RTL case and client to screen that point
pt = new NativeMethods.POINT(rc.right, rc.top);
}
UnsafeNativeMethods.ClientToScreen(new HandleRef(this, _sourceWindow.CriticalHandle), pt);
return pt;
}
private void PossiblyDeactivate(IntPtr hwndCapture, bool stillActiveIfOverSelf)
{
// we may have been disposed by a re-entrant call (bug 1536643).
// If so, there's nothing more to do.
if (null == _source || null == _source.Value )
{
return;
}
if(_isDwmProcess)
{
return;
}
//Console.WriteLine("PossiblyDeactivate(" + hwndCapture + ")");
// We are now longer active ourselves, but it is possible that the
// window the mouse is going to intereact with is in the same
// Dispatcher as ourselves. If so, we don't want to deactivate the
// mouse input stream because the other window hasn't activated it
// yet, and it may result in the input stream "flickering" between
// active/inactive/active. This is ugly, so we try to supress the
// uneccesary transitions.
//
IntPtr hwndToCheck = hwndCapture;
if(hwndToCheck == IntPtr.Zero)
{
NativeMethods.POINT ptCursor = new NativeMethods.POINT();
int messagePos = 0;
try
{
messagePos = SafeNativeMethods.GetMessagePos();
}
catch(System.ComponentModel.Win32Exception)
{
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: GetMessagePos failed!");
}
ptCursor.x = NativeMethods.SignedLOWORD(messagePos);
ptCursor.y = NativeMethods.SignedHIWORD(messagePos);
//Console.WriteLine(" GetMessagePos: ({0},{1})", ptCursor.x, ptCursor.y);
try
{
hwndToCheck = UnsafeNativeMethods.WindowFromPoint(ptCursor.x, ptCursor.y);
}
catch(System.ComponentModel.Win32Exception)
{
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: WindowFromPoint failed!");
}
if (!stillActiveIfOverSelf && hwndToCheck == _source.Value.CriticalHandle)
{
hwndToCheck = IntPtr.Zero;
}
if(hwndToCheck != IntPtr.Zero)
{
// We need to check if the point is over the client or
// non-client area. We only care about being over the
// non-client area.
try
{
NativeMethods.RECT rcClient = new NativeMethods.RECT();
SafeNativeMethods.GetClientRect(new HandleRef(this,hwndToCheck), ref rcClient);
SafeNativeMethods.ScreenToClient(new HandleRef(this,hwndToCheck), ptCursor);
if(ptCursor.x < rcClient.left || ptCursor.x >= rcClient.right ||
ptCursor.y < rcClient.top || ptCursor.y >= rcClient.bottom)
{
// We are not over the non-client area. We can bail out.
//Console.WriteLine(" No capture, mouse outside of client area.");
//Console.WriteLine(" Client Area: ({0},{1})-({2},{3})", rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
//Console.WriteLine(" Mouse: ({0},{1})", ptCursor.x, ptCursor.y);
hwndToCheck = IntPtr.Zero;
}
}
catch(System.ComponentModel.Win32Exception)
{
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: GetClientRect or ScreenToClient failed!");
}
}
}
// If the window the mouse is over is ours, we'll just let it activate
// without deactivating the mouse input stream for this window. This prevents
// the mouse input stream from flickering.
bool deactivate = !IsOurWindow(hwndToCheck);
//Console.WriteLine(" Deactivate=" + deactivate);
// Only deactivate the mouse input stream if needed.
if(deactivate)
{
ReportInput(_source.Value.CriticalHandle,
InputMode.Foreground,
_msgTime,
RawMouseActions.Deactivate,
0,
0,
0);
}
else
{
// We are not deactivating the mouse input stream because the
// window that is going to provide mouse input next is one of
// our Avalon windows. This optimization keeps the mouse input
// stream from flickering by transitioning to null.
//
// But this window itself should not be active anymore.
_active = false;
}
}
/// <summary>
/// Converts a rectangle from an Avalon Rect to a Win32 RECT
/// </summary>
/// <remarks>
/// Rounds "double" values to the nearest "int"
/// </remarks>
/// <param name="rect">
/// The rectangle as an Avalon Rect
/// </param>
/// <returns>
/// The rectangle as a Win32 RECT
/// </returns>
internal static NativeMethods.RECT FromRect(Rect rect)
{
NativeMethods.RECT rc = new NativeMethods.RECT();
rc.top = DoubleUtil.DoubleToInt(rect.Y);
rc.left = DoubleUtil.DoubleToInt(rect.X);
rc.bottom = DoubleUtil.DoubleToInt(rect.Bottom);
rc.right = DoubleUtil.DoubleToInt(rect.Right);
return rc;
}
/// <summary>
/// Adjusts a POINT to compensate for Win32 RTL conversion logic
/// </summary>
/// <remarks>
/// MITIGATION: AVALON_RTL_AND_WIN32RTL
///
/// When a window is marked with the WS_EX_LAYOUTRTL style, Win32
/// mirrors the coordinates during the various translation APIs.
///
/// Avalon also sets up mirroring transforms so that we properly
/// mirror the output since we render to DirectX, not a GDI DC.
///
/// Unfortunately, this means that our coordinates are already mirrored
/// by Win32, and Avalon mirrors them again. To work around this
/// problem, we un-mirror the coordinates from Win32 before hit-testing
/// in Avalon.
/// </remarks>
/// <param name="pt">
/// The POINT to be adjusted
/// </param>
/// <param name="handleRef">
/// A HandleRef to the hwnd containing the point to be adjusted
/// </param>
/// <returns>
/// The adjusted point
/// </returns>
internal static NativeMethods.POINT AdjustForRightToLeft(NativeMethods.POINT pt, HandleRef handleRef)
{
int windowStyle = SafeNativeMethods.GetWindowStyle(handleRef, true);
if(( windowStyle & NativeMethods.WS_EX_LAYOUTRTL ) == NativeMethods.WS_EX_LAYOUTRTL)
{
NativeMethods.RECT rcClient = new NativeMethods.RECT();
SafeNativeMethods.GetClientRect(handleRef, ref rcClient);
pt.x = rcClient.right - pt.x;
}
return pt;
}
private void UpdateWindowPos(IntPtr lParam)
{
//
// We need to update the window settings used by the render thread when
// 1) The size or position of the render target needs to change
// 2) The render target needs to be enabled or disabled.
//
// Further, we need to synchronize the render thread during sizing operations.
// This is because some APIs that the render thread uses (such as
// UpdateLayeredWindow) have the unintended side-effect of also changing the
// window size. We can't let the render thread and the UI thread fight
// over setting the window size.
//
// Generally, Windows sends our window to messages that bracket the size
// operation:
// 1) WM_WINDOWPOSCHANGING
// Here we synchronize with the render thread, and ask the render thread
// to not render to this window for a while.
// 2) WM_WINDOWPOSCHANGED
// This is after the window size has actually been changed, so we tell
// the render thread that it can render to the window again.
//
// However, there are complications. Sometimes Windows will send a
// WM_WINDOWPOSCHANGING without sending a WM_WINDOWPOSCHANGED. This happens
// when the window size is not really going to change. Also note that
// more than just size/position information is provided by these messages.
// We'll get these messages when nothing but the z-order changes for instance.
//
//
// The first order of business is to determine if the render target
// size or position changed. If so, we need to pass this information to
// the render thread.
//
NativeMethods.WINDOWPOS windowPos = (NativeMethods.WINDOWPOS)UnsafeNativeMethods.PtrToStructure(lParam, typeof(NativeMethods.WINDOWPOS));
bool isMove = (windowPos.flags & NativeMethods.SWP_NOMOVE) == 0;
bool isSize = (windowPos.flags & NativeMethods.SWP_NOSIZE) == 0;
bool positionChanged = (isMove || isSize);
if (positionChanged)
{
//
// We have found that sometimes we get told that the size or position
// of the window has changed, when it really hasn't. So we double
// check here. This is critical because we won't be given a
// WM_WINDOWPOSCHANGED unless the size or position really had changed.
//
if (!isMove)
{
// This is just to avoid any possible integer overflow problems.
windowPos.x = windowPos.y = 0;
}
if (!isSize)
{
// This is just to avoid any possible integer overflow problems.
windowPos.cx = windowPos.cy = 0;
}
//
// WINDOWPOS stores the window coordinates relative to its parent.
// If the parent is NULL, then these are already screen coordinates.
// Otherwise, we need to convert to screen coordinates.
//
NativeMethods.RECT windowRectInScreenCoords = new NativeMethods.RECT(windowPos.x, windowPos.y, windowPos.x + windowPos.cx, windowPos.y + windowPos.cy);
IntPtr hwndParent = UnsafeNativeMethods.GetParent(new HandleRef(null, windowPos.hwnd));
if(hwndParent != IntPtr.Zero)
{
SafeSecurityHelper.TransformLocalRectToScreen(new HandleRef(null, hwndParent), ref windowRectInScreenCoords);
}
if (!isMove)
{
// We weren't actually moving, so the WINDOWPOS structure
// did not contain valid (x,y) information. Just use our
// old values.
int width = (windowRectInScreenCoords.right - windowRectInScreenCoords.left);
int height = (windowRectInScreenCoords.bottom - windowRectInScreenCoords.top);
windowRectInScreenCoords.left = _hwndWindowRectInScreenCoords.left;
windowRectInScreenCoords.right = windowRectInScreenCoords.left + width;
windowRectInScreenCoords.top = _hwndWindowRectInScreenCoords.top;
windowRectInScreenCoords.bottom = windowRectInScreenCoords.top + height;
}
if (!isSize)
{
// We weren't actually sizing, so the WINDOWPOS structure
// did not contain valid (cx,cy) information. Just use our
// old values.
int width = (_hwndWindowRectInScreenCoords.right - _hwndWindowRectInScreenCoords.left);
int height = (_hwndWindowRectInScreenCoords.bottom - _hwndWindowRectInScreenCoords.top);
windowRectInScreenCoords.right = windowRectInScreenCoords.left + width;
windowRectInScreenCoords.bottom = windowRectInScreenCoords.top + height;
}
positionChanged = ( _hwndWindowRectInScreenCoords.left != windowRectInScreenCoords.left
|| _hwndWindowRectInScreenCoords.top != windowRectInScreenCoords.top
|| _hwndWindowRectInScreenCoords.right != windowRectInScreenCoords.right
|| _hwndWindowRectInScreenCoords.bottom != windowRectInScreenCoords.bottom);
}
//
// The second order of business is to determine whether or not the render
// target should be enabled. If we are disabling the render target, then
// we need to synchronize with the render thread. Basically,
// a WM_WINDOWPOSCHANGED always enables the render target it the window is
// visible. And a WM_WINDOWPOSCHANGING will disable the render target
// unless it is not really a size/move, in which case we will not be sent
// a WM_WINDOWPOSCHANGED, so we can't disable the render target.
//
bool enableRenderTarget = SafeNativeMethods.IsWindowVisible(_hWnd.MakeHandleRef(this));
if(enableRenderTarget)
{
if(_windowPosChanging && (positionChanged))
{
enableRenderTarget = false;
}
}
if (positionChanged || (enableRenderTarget != _isRenderTargetEnabled))
{
UpdateWindowSettings(enableRenderTarget);
}
}
override protected Rect GetBoundingRectangleCore()
{
Rect bounds = new Rect(0,0,0,0);
IntPtr hwnd = this.Hwnd;
if(hwnd != IntPtr.Zero)
{
NativeMethods.RECT rc = new NativeMethods.RECT(0,0,0,0);
try
{
//This method elevates via SuppressUnmanadegCodeSecurity and throws Win32Exception on GetLastError
SafeNativeMethods.GetWindowRect(new HandleRef(null, hwnd), ref rc);
}
// Allow empty catch statements.
#pragma warning disable 56502
catch(Win32Exception) {}
// Disallow empty catch statements.
#pragma warning restore 56502
bounds = new Rect(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
}
return bounds;
}
internal static extern bool GetWindowRect(IntPtr hwnd, ref NativeMethods.RECT rect);
//------------------------------------------------------
//
// Interface ITransformProvider
//
//------------------------------------------------------
#region Interface ITransformProvider
void ITransformProvider.Move( double x, double y )
{
if ( ! ((ITransformProvider)this).CanMove )
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
int extendedStyle = GetWindowExStyle();
if ( IsBitSet(extendedStyle, SafeNativeMethods.WS_EX_MDICHILD) )
{
// we always deal in screen pixels. But if its an MDI window it interprets these as
// client pixels so convert them to get the expected results.
NativeMethods.POINT point = new NativeMethods.POINT((int)x, (int)y);
NativeMethods.HWND hwndParent = SafeNativeMethods.GetAncestor(NativeMethods.HWND.Cast(_hwnd), SafeNativeMethods.GA_PARENT);
if (!MapWindowPoints(NativeMethods.HWND.NULL, hwndParent, ref point, 1))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
x = point.x;
y = point.y;
// Make sure the MDI child stays on the parents client area.
NativeMethods.RECT currentRect = new NativeMethods.RECT();
if (!Misc.GetWindowRect(_hwnd, out currentRect))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
int currentHeight = currentRect.bottom - currentRect.top;
int currentWidth = currentRect.right - currentRect.left;
int dx = SafeNativeMethods.GetSystemMetrics(SafeNativeMethods.SM_CXHSCROLL);
int dy = SafeNativeMethods.GetSystemMetrics(SafeNativeMethods.SM_CYHSCROLL);
// If to far to the left move right edge to be visible.
// Move the left edge the absalute differance of the right to the origin plus a little more to be visible.
if (x + currentWidth < 0)
{
x += ((x + currentWidth) * -1 + dx);
}
// If to far off the top move bottom edge down to be visible.
// Move the top edge the absalute differance of the bottom to the origin plus a little more to be visible.
if (y + currentHeight < 0)
{
y += ((y + currentHeight) * -1 + dy);
}
NativeMethods.RECT parentRect = new NativeMethods.RECT();
if (!Misc.GetClientRect(hwndParent, out parentRect))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
// If to far to the right move left edge to be visible.
// Move the left edge back the diffance of it and the parent's client area right side plus a little more to be visible.
if (x > parentRect.right)
{
x -= (x - parentRect.right + dx);
}
// If to far off the bottome move top edge down to be visible.
// Move the top edge up the diffance of it and the parent's client area bottom side plus a little more to be visible.
if (y > parentRect.bottom)
{
y -= (y - parentRect.bottom + dy);
}
}
// position the window keeping the zorder the same and not resizing.
// We do this first so that the window is moved in terms of screen coordinates.
// The WindowPlacement APIs take in to account the workarea which ends up
// putting the window in the wrong place
if (!Misc.SetWindowPos(_hwnd, NativeMethods.HWND.NULL, (int)x, (int)y, 0, 0, UnsafeNativeMethods.SWP_NOSIZE | UnsafeNativeMethods.SWP_NOZORDER | UnsafeNativeMethods.SWP_NOACTIVATE))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
UnsafeNativeMethods.WINDOWPLACEMENT wp = new UnsafeNativeMethods.WINDOWPLACEMENT();
wp.length = Marshal.SizeOf(typeof(UnsafeNativeMethods.WINDOWPLACEMENT));
// get the WINDOWPLACEMENT information. This includes the coordinates in
// terms of the workarea.
if (!Misc.GetWindowPlacement(_hwnd, ref wp))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
int style = GetWindowStyle();
if (style == 0)
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
if ( IsBitSet(style, SafeNativeMethods.WS_MINIMIZE) )
{
// If the window is minimized the parameters have to be setup differently
wp.ptMinPosition.y = (int) y;
wp.ptMinPosition.x = (int) x;
wp.flags = UnsafeNativeMethods.WPF_SETMINPOSITION;
// Use SetWindowPlacement to move the window because it handles the case where the
// window is move completly off the screen even in the multi-mon case. If this happens
// it will place the window on the primary monitor at a location closest to the taget.
if (!Misc.SetWindowPlacement(_hwnd, ref wp))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
}
else
{
NativeMethods.RECT currentRect = new NativeMethods.RECT();
if (!Misc.GetWindowRect(_hwnd, out currentRect))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
// Use SetWindowPlacement to move the window because it handles the case where the
// window is move completly off the screen even in the multi-mon case. If this happens
// it will place the window on the primary monitor at a location closest to the taget.
if (!Misc.SetWindowPlacement(_hwnd, ref wp))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
// check to make sure SetWindowPlacement has not changed the size of our window
// There may be a bug in SetWindowPlacement.
int currentHeight = currentRect.bottom - currentRect.top;
int currentWidth = currentRect.right - currentRect.left;
if (!Misc.GetWindowPlacement(_hwnd, ref wp))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
int newHeight = wp.rcNormalPosition.bottom - wp.rcNormalPosition.top;
int newWidth = wp.rcNormalPosition.right -wp.rcNormalPosition.left;
if ( currentHeight != newHeight || currentWidth != newWidth )
{
wp.rcNormalPosition.bottom = wp.rcNormalPosition.top + currentHeight;
wp.rcNormalPosition.right = wp.rcNormalPosition.left + currentWidth;
if (!Misc.SetWindowPlacement(_hwnd, ref wp))
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
}
}
}
// Get the child window at the specified point.
// Returns IntPtr.NULL on error; returns original window if point is not
// on any child window.
// When the returned window is a child, the out param isClientArea indicates
// whether the returned point is on the client area of the returned HWND.
private static NativeMethods.HWND ChildWindowFromPoint( NativeMethods.HWND hwnd, double x, double y, out bool isClientArea )
{
NativeMethods.HWND hBestFitTransparent = NativeMethods.HWND.NULL;
NativeMethods.RECT rcBest = new NativeMethods.RECT();
isClientArea = true;
IntPtr hrgn = Misc.CreateRectRgn(0, 0, 0, 0); // NOTE: Must be deleted before returning
if (hrgn == IntPtr.Zero)
{
return NativeMethods.HWND.NULL;
}
// Infinite looping is 'possible' (though unlikely) when
// using GetWindow(...NEXT), so we counter-limit this loop...
int SanityLoopCount = 1024;
for (NativeMethods.HWND hChild = Misc.GetWindow(hwnd, SafeNativeMethods.GW_CHILD);
hChild != NativeMethods.HWND.NULL && --SanityLoopCount > 0 ;
hChild = Misc.GetWindow(hChild, SafeNativeMethods.GW_HWNDNEXT))
{
// Skip invisible...
if( ! IsWindowReallyVisible( hChild ) )
continue;
// Check for rect...
NativeMethods.RECT rc = new NativeMethods.RECT();
if (!Misc.GetWindowRect(hChild, out rc))
{
continue;
}
// If on Vista, convert the incoming physical screen coords to hwndChild-relative
// logical coords before using them in [logical] rect comparisons...
double xLogical = x;
double yLogical = y;
if (Environment.OSVersion.Version.Major >= 6)
{
NativeMethods.HWND hwndTopLevel = SafeNativeMethods.GetAncestor(hChild, SafeNativeMethods.GA_ROOT);
NativeMethods.POINT pt = new NativeMethods.POINT((int)x, (int)y);
try
{
SafeNativeMethods.PhysicalToLogicalPoint(hwndTopLevel, ref pt);
xLogical = pt.x;
yLogical = pt.y;
}
catch (EntryPointNotFoundException)
{
// Ignore.
}
}
if(!PtInRect(rc, xLogical, yLogical))
{
continue;
}
// Skip disabled child windows with other controls beneath it.
// (only a few places actually use this,
// eg. the Date&Time properties window, which has a disabled edit window
// over the edits/static for the time components - see WinClient#856699)
int style = GetWindowStyle(hChild);
if ((style & SafeNativeMethods.WS_CHILD) != 0
&& (style & SafeNativeMethods.WS_DISABLED) != 0)
{
int x1 = (rc.left + rc.right) / 2;
int y1 = (rc.top + rc.bottom) / 2;
IntPtr hwndCompare = UnsafeNativeMethods.WindowFromPhysicalPoint(x1, y1);
// The WindowFromPoint function does not retrieve a handle to a hidden or disabled window,
// even if the point is within the window. So we should either get the parents hwnd or
// the controls hwnd underneath the disabled control, if one exsists.
//
if (hwndCompare != (IntPtr)hwnd)
{
// This means that there is another child under `the disabled child, so we want to exclude
// `the disabled child high in the z-order.
continue;
}
}
// Check for transparent layered windows (eg as used by menu and tooltip shadows)
// (Note that WS_EX_TRANSPARENT has a specific meaning when used with WS_EX_LAYERED
// that is different then when it is used alone, so we must check both flags
// together.)
int exStyle = GetWindowExStyle(hChild);
if( ( exStyle & SafeNativeMethods.WS_EX_LAYERED ) != 0
&& ( exStyle & SafeNativeMethods.WS_EX_TRANSPARENT ) != 0 )
{
continue;
}
// If window is using a region (eg. Media Player), check whether
// point is in it...
if (SafeNativeMethods.GetWindowRgn(hChild.h, hrgn) == SafeNativeMethods.COMPLEXREGION)
{
// hrgn is relative to window (not client or screen), so offset point appropriately...
if (!SafeNativeMethods.PtInRegion(hrgn, (int)xLogical - rc.left, (int)yLogical - rc.top))
{
continue;
}
}
// Try for transparency and/or non-client areas:
IntPtr lr = Misc.SendMessageTimeout( hChild, UnsafeNativeMethods.WM_NCHITTEST, IntPtr.Zero, MAKELPARAM( (int)x, (int)y ) );
if( lr == UnsafeNativeMethods.HTTRANSPARENT )
{
// For reasons best known to the writers of USER, statics - used
// as labels - claim to be transparent. So that we do hit-test
// to these, we remember the hwnd here, so if nothing better
// comes along, we'll use this.
// If we come accross two or more of these, we remember the
// one that fits inside the other - if any. That way,
// we hit-test to siblings 'within' siblings - eg. statics in
// a groupbox.
if( hBestFitTransparent == NativeMethods.HWND.NULL )
{
hBestFitTransparent = hChild;
if (!Misc.GetWindowRect(hChild, out rcBest))
{
continue;
}
}
else
{
// Is this child within the last remembered transparent?
// If so, remember it instead.
NativeMethods.RECT rcChild = new NativeMethods.RECT();
if (!Misc.GetWindowRect(hChild, out rcChild))
{
continue;
}
if( Rect1InRect2( rcChild, rcBest ) )
{
hBestFitTransparent = hChild;
rcBest = rcChild;
}
}
continue;
}
// Got the window!
// Using the hit-test result and compairing against HTCLIENT is not good enough. The Shell_TrayWnd control,
// i.e. the task bar, will never returns a value of HTCLIENT, so check to see if the point is in the client area.
NativeMethods.RECT rcClient = new NativeMethods.RECT();
if (!Misc.GetClientRect(hChild, out rcClient) ||
!MapWindowPoints(hChild, NativeMethods.HWND.NULL, ref rcClient, 2) ||
!PtInRect(rcClient, xLogical, yLogical))
{
isClientArea = false;
}
Misc.DeleteObject(hrgn); // finished with region
return hChild;
}
Misc.DeleteObject(hrgn); // finished with region
if( SanityLoopCount == 0 )
{
Debug.Assert(false, "too many children or inf loop?");
return NativeMethods.HWND.NULL;
}
// Did we find a transparent (eg. a static) on our travels? If so, since
// we couldn't find anything better, may as well use it.
if( hBestFitTransparent != NativeMethods.HWND.NULL )
{
return hBestFitTransparent;
}
// Otherwise return the original window (not NULL!) if no child found...
return hwnd;
}
internal Rect GetParentWindowRect()
{
NativeMethods.RECT rect = new NativeMethods.RECT(0, 0, 0, 0);
IntPtr parent = ParentHandle;
if (parent != IntPtr.Zero)
{
SafeNativeMethods.GetClientRect(new HandleRef(null, parent), ref rect);
}
return PointUtil.ToRect(rect);
}
// Paramter: Point p should be the most interesting point of a pop up positioning. The top left.
// Return the maximum boundingRect for the popup.
// If this is not a child-popup
// and the Point p passed in is inside of the Work Area then return the monitor work area rect
// A tooltip opened above the taskbar will never display over/under the taskbar.
// To accomodate this the work area of the screen is returned to allow the pop up to
// respect the reserved area of the teskbar.
// and the Point p passed in is outside of the work area then return the monitor rect
// this can happen If the program is an appbar program (http://msdn.microsoft.com/en-us/library/cc144177(VS.85).aspx)
// and the tooltip is in the area removed from the work area. In this case the tooltip can
// be placed without regard for the work area bounds.
// Else this is the BoundingRect of either the placement target's window or the parent of the popup's window.
private Rect GetScreenBounds(Rect boundingBox, Point p)
{
if (_secHelper.IsChildPopup)
{
// The "monitor" is the main window for child windows.
return _secHelper.GetParentWindowRect();
}
NativeMethods.RECT rect = new NativeMethods.RECT(0, 0, 0, 0);
NativeMethods.RECT nativeBounds = PointUtil.FromRect(boundingBox);
IntPtr monitor = SafeNativeMethods.MonitorFromRect(ref nativeBounds, NativeMethods.MONITOR_DEFAULTTONEAREST);
if (monitor != IntPtr.Zero)
{
NativeMethods.MONITORINFOEX monitorInfo = new NativeMethods.MONITORINFOEX();
monitorInfo.cbSize = Marshal.SizeOf(typeof(NativeMethods.MONITORINFOEX));
SafeNativeMethods.GetMonitorInfo(new HandleRef(null, monitor), monitorInfo);
//If this is a pop up for a menu or ToolTip then respect the work area if opening in the work area.
if (((this.Child is MenuBase)
|| (this.Child is ToolTip)
|| (this.TemplatedParent is MenuItem))
&& ((p.X >= monitorInfo.rcWork.left)
&& (p.X <= monitorInfo.rcWork.right)
&& (p.Y >= monitorInfo.rcWork.top)
&& (p.Y <= monitorInfo.rcWork.bottom)))
{
// Context Menus, MenuItems, and ToolTips shouldn't go over the Taskbar
rect = monitorInfo.rcWork;
}
else
{
rect = monitorInfo.rcMonitor;
}
}
return PointUtil.ToRect(rect);
}
private void DoPaint()
{
NativeMethods.PAINTSTRUCT ps = new NativeMethods.PAINTSTRUCT();
NativeMethods.HDC hdc;
HandleRef handleRef = new HandleRef(this, _hWnd);
hdc.h = UnsafeNativeMethods.BeginPaint(handleRef, ref ps);
int retval = UnsafeNativeMethods.GetWindowLong(handleRef, NativeMethods.GWL_EXSTYLE);
NativeMethods.RECT rcPaint = new NativeMethods.RECT(ps.rcPaint_left, ps.rcPaint_top, ps.rcPaint_right, ps.rcPaint_bottom);
//
// If we get a BeginPaint with an empty rect then check
// if this is a special layered, non-redirected window
// which would mean we need to do a full paint when it
// won't cause a problem.
//
if (rcPaint.IsEmpty
&& ((retval & NativeMethods.WS_EX_LAYERED) != 0)
&& !UnsafeNativeMethods.GetLayeredWindowAttributes(_hWnd.MakeHandleRef(this), IntPtr.Zero, IntPtr.Zero, IntPtr.Zero)
&& !_isSessionDisconnected
&& !_isMinimized
&& (!_isSuspended || (UnsafeNativeMethods.GetSystemMetrics(SM.REMOTESESSION) != 0))) //
// notifications for the server monitor are being broad-casted when the
// machine is in a non-local TS session. See Dev10 bug for more details.
{
rcPaint = new NativeMethods.RECT(
0,
0,
_hwndClientRectInScreenCoords.right - _hwndClientRectInScreenCoords.left,
_hwndClientRectInScreenCoords.bottom - _hwndClientRectInScreenCoords.top);
}
AdjustForRightToLeft(ref rcPaint, handleRef);
if (!rcPaint.IsEmpty)
{
InvalidateRect(rcPaint);
}
UnsafeNativeMethods.EndPaint(_hWnd.MakeHandleRef(this), ref ps);
}
private void GetWindowRectsInScreenCoordinates()
{
NativeMethods.RECT rcClient = new NativeMethods.RECT();
//
// Get the window and client rectangles
//
SafeNativeMethods.GetWindowRect(_hWnd.MakeHandleRef(this), ref _hwndWindowRectInScreenCoords);
SafeNativeMethods.GetClientRect(_hWnd.MakeHandleRef(this), ref rcClient);
NativeMethods.POINT ptClientTopLeft = new NativeMethods.POINT(rcClient.left, rcClient.top);
UnsafeNativeMethods.ClientToScreen(_hWnd.MakeHandleRef(this), ptClientTopLeft);
NativeMethods.POINT ptClientBottomRight = new NativeMethods.POINT(rcClient.right, rcClient.bottom);
UnsafeNativeMethods.ClientToScreen(_hWnd.MakeHandleRef(this), ptClientBottomRight);
if(ptClientBottomRight.x >= ptClientTopLeft.x)
{
_hwndClientRectInScreenCoords.left = ptClientTopLeft.x;
_hwndClientRectInScreenCoords.right = ptClientBottomRight.x;
}
else
{
// RTL windows will cause the right edge to be on the left...
_hwndClientRectInScreenCoords.left = ptClientBottomRight.x;
_hwndClientRectInScreenCoords.right = ptClientTopLeft.x;
}
if(ptClientBottomRight.y >= ptClientTopLeft.y)
{
_hwndClientRectInScreenCoords.top = ptClientTopLeft.y;
_hwndClientRectInScreenCoords.bottom = ptClientBottomRight.y;
}
else
{
// RTL windows will cause the right edge to be on the left...
// This doesn't affect top/bottom, but the code should be symmetrical.
_hwndClientRectInScreenCoords.top = ptClientBottomRight.y;
_hwndClientRectInScreenCoords.bottom = ptClientTopLeft.y;
}
//
}
public static extern bool GetClientRect(NativeMethods.HWND hwnd, out NativeMethods.RECT rc);
public static extern bool GetWindowRect(NativeMethods.HWND hwnd, out NativeMethods.RECT rc);
public static extern bool IntGetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect);
/// <summary>
/// Adjusts a RECT to compensate for Win32 RTL conversion logic
/// </summary>
/// <remarks>
/// MITIGATION: AVALON_RTL_AND_WIN32RTL
///
/// When a window is marked with the WS_EX_LAYOUTRTL style, Win32
/// mirrors the coordinates during the various translation APIs.
///
/// Avalon also sets up mirroring transforms so that we properly
/// mirror the output since we render to DirectX, not a GDI DC.
///
/// Unfortunately, this means that our coordinates are already mirrored
/// by Win32, and Avalon mirrors them again. To work around this
/// problem, we un-mirror the coordinates from Win32 before hit-testing
/// in Avalon.
/// </remarks>
/// <param name="rc">
/// The RECT to be adjusted
/// </param>
/// <param name="handleRef">
/// </param>
/// <returns>
/// The adjusted rectangle
/// </returns>
internal static NativeMethods.RECT AdjustForRightToLeft(NativeMethods.RECT rc, HandleRef handleRef)
{
int windowStyle = SafeNativeMethods.GetWindowStyle(handleRef, true);
if(( windowStyle & NativeMethods.WS_EX_LAYOUTRTL ) == NativeMethods.WS_EX_LAYOUTRTL)
{
NativeMethods.RECT rcClient = new NativeMethods.RECT();
SafeNativeMethods.GetClientRect(handleRef, ref rcClient);
int width = rc.right - rc.left; // preserve width
rc.right = rcClient.right - rc.left; // set right of rect to be as far from right of window as left of rect was from left of window
rc.left = rc.right - width; // restore width by adjusting left and preserving right
}
return rc;
}
public static extern bool IntAdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle);
private bool ReportInput(
IntPtr hwnd,
InputMode mode,
int timestamp,
RawMouseActions actions,
int x,
int y,
int wheel)
{
// if there's no HwndSource, we shouldn't get here. But just in case...
Debug.Assert(null != _source && null != _source.Value);
if (_source == null || _source.Value == null)
{
return false;
}
PresentationSource source = _source.Value;
CompositionTarget ct = source.CompositionTarget;
// Input reports should only be generated if the window is still valid.
if(_site == null || source.IsDisposed || ct == null )
{
if(_active)
{
// We are still active, but the window is dead. Force a deactivate.
actions = RawMouseActions.Deactivate;
}
else
{
return false;
}
}
if((actions & RawMouseActions.Deactivate) == RawMouseActions.Deactivate)
{
// Stop tracking the mouse since we are deactivating.
StopTracking(hwnd);
_active = false;
}
else if((actions & RawMouseActions.CancelCapture) == RawMouseActions.CancelCapture)
{
// We have lost capture, but don't do anything else.
}
else if(!_active && (actions & RawMouseActions.VerticalWheelRotate) == RawMouseActions.VerticalWheelRotate)
{
// report mouse wheel events as if they came from the window that
// is under the mouse (even though they are reported to the window
// with keyboard focus)
MouseDevice mouse = _site.Value.CriticalInputManager.PrimaryMouseDevice;
if (mouse != null && mouse.CriticalActiveSource != null)
{
source = mouse.CriticalActiveSource;
}
}
else
{
// If we are not active, we need to activate first.
if(!_active)
{
// But first, check for "spurious" mouse events...
//
// Sometimes we get a mouse move for window "A" AFTER another
// window ("B") has become active. This would cause "A" to think
// that it is active, and to tell Avalon. Now both "A" and "B" think
// they are active, and Avalon thinks "A" is, but REALLY, "B" is.
//
// Confused yet?
//
// To avoid this, if this window ("A") gets a mouse move,
// we verify that either "A" has capture, or the mouse is over "A"
IntPtr hwndToCheck = SafeNativeMethods.GetCapture();
if(hwnd != hwndToCheck)
{
// If we get this far, "A" does NOT have capture
// - now ensure mouse is over "A"
NativeMethods.POINT ptCursor = new NativeMethods.POINT();
try
{
UnsafeNativeMethods.GetCursorPos(ptCursor);
}
catch(System.ComponentModel.Win32Exception)
{
// Sometimes Win32 will fail this call, such as if you are
// not running in the interactive desktop. For example,
// a secure screen saver may be running.
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: GetCursorPos failed!");
}
try
{
hwndToCheck = UnsafeNativeMethods.WindowFromPoint(ptCursor.x, ptCursor.y);
}
catch(System.ComponentModel.Win32Exception)
{
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: WindowFromPoint failed!");
}
if(hwnd != hwndToCheck)
{
// If we get this far:
// - the mouse is NOT over "A"
// - "A" does NOT have capture
// We consider this a "spurious" mouse move and ignore it. (Win32 bug?)
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: Spurious mouse event received!");
return false;
}
}
// We need to collect the current state of the mouse.
// Include the activation action.
actions |= RawMouseActions.Activate;
// Remember that we are active.
_active = true;
_lastX = x;
_lastY = y;
//Console.WriteLine("Activating the mouse.");
}
// Make sure we are tracking the mouse so we know when it
// leaves the window.
StartTracking(hwnd);
// Even if a move isn't explicitly reported, we still may need to
// report one if the coordinates are different. This is to cover
// some ugly edge cases with context menus and such.
if((actions & RawMouseActions.AbsoluteMove) == 0)
{
if(x != _lastX || y != _lastY)
{
actions |= RawMouseActions.AbsoluteMove;
}
}
else
{
_lastX = x;
_lastY = y;
}
// record mouse motion so that GetIntermediatePoints has the
// information it needs
if ((actions & RawMouseActions.AbsoluteMove) != 0)
{
RecordMouseMove(x, y, _msgTime);
}
// MITIGATION: WIN32_AND_AVALON_RTL
//
// When a window is marked with the WS_EX_LAYOUTRTL style, Win32
// mirrors the coordinates received for mouse movement as well as
// mirroring the output of drawing to a GDI DC.
//
// Avalon also sets up mirroring transforms so that we properly
// mirror the output since we render to DirectX, not a GDI DC.
//
// Unfortunately, this means that our input is already mirrored
// by Win32, and Avalon mirrors it again. To work around this
// problem, we un-mirror the input from Win32 before passing
// it into Avalon.
//
if((actions & (RawMouseActions.AbsoluteMove | RawMouseActions.Activate)) != 0)
{
try
{
//This has a SUC on it and accesses CriticalHandle
int windowStyle = SafeNativeMethods.GetWindowStyle(new HandleRef(this, _source.Value.CriticalHandle), true);
if((windowStyle & NativeMethods.WS_EX_LAYOUTRTL) == NativeMethods.WS_EX_LAYOUTRTL)
{
NativeMethods.RECT rcClient = new NativeMethods.RECT();
SafeNativeMethods.GetClientRect(new HandleRef(this,_source.Value.Handle), ref rcClient);
x = rcClient.right - x;
}
}
catch(System.ComponentModel.Win32Exception)
{
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: GetWindowStyle or GetClientRect failed!");
}
}
}
// Get the extra information sent along with the message.
//There exists a SUC for this native method call
IntPtr extraInformation = IntPtr.Zero;
try
{
extraInformation = UnsafeNativeMethods.GetMessageExtraInfo();
}
catch(System.ComponentModel.Win32Exception)
{
System.Diagnostics.Debug.WriteLine("HwndMouseInputProvider: GetMessageExtraInfo failed!");
}
RawMouseInputReport report = new RawMouseInputReport(mode,
timestamp,
source,
actions,
x,
y,
wheel,
extraInformation);
bool handled = _site.Value.ReportInput(report);
return handled;
}
public static extern IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags);
// Get bounding rectangle, relative to screen
internal static Rect GetScreenRect( IntPtr hwnd, UIElement el )
{
Rect rc = GetLocalRect( el );
// Map from local to screen coords...
NativeMethods.RECT rcWin32 = new NativeMethods.RECT( (int) rc.Left, (int) rc.Top, (int) rc.Right, (int) rc.Bottom );
try
{
SafeSecurityHelper.TransformLocalRectToScreen(new HandleRef(null, hwnd), ref rcWin32);
}
catch (System.ComponentModel.Win32Exception)
{
return Rect.Empty;
}
rc = new Rect( rcWin32.left, rcWin32.top, rcWin32.right - rcWin32.left, rcWin32.bottom - rcWin32.top );
return rc;
}
public static IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags)
{
return(SafeNativeMethodsPrivate.MonitorFromRect(ref rect, flags));
}
private static void GetClippedPositionOffsets(TextEditor This, ITextPointer position, LogicalDirection direction,
out double horizontalOffset, out double verticalOffset)
{
// GetCharacterRect will return the position that base on UiScope.
Rect positionRect = position.GetCharacterRect(direction);
// Get the base offsets for our ContextMenu.
horizontalOffset = positionRect.X;
verticalOffset = positionRect.Y + positionRect.Height;
// Clip to the child render scope.
FrameworkElement element = This.TextView.RenderScope as FrameworkElement;
if (element != null)
{
GeneralTransform transform = element.TransformToAncestor(This.UiScope);
if (transform != null)
{
ClipToElement(element, transform, ref horizontalOffset, ref verticalOffset);
}
}
// Clip to parent visuals.
// This is unintuitive -- you might expect parents to have increasingly
// larger viewports. But any parent that behaves like a ScrollViewer
// will have a smaller view port that we need to clip against.
for (Visual visual = This.UiScope; visual != null; visual = VisualTreeHelper.GetParent(visual) as Visual)
{
element = visual as FrameworkElement;
if (element != null)
{
GeneralTransform transform = visual.TransformToDescendant(This.UiScope);
if (transform != null)
{
ClipToElement(element, transform, ref horizontalOffset, ref verticalOffset);
}
}
}
// Clip to the window client rect.
PresentationSource source = PresentationSource.CriticalFromVisual(This.UiScope);
IWin32Window window = source as IWin32Window;
if (window != null)
{
IntPtr hwnd = IntPtr.Zero;
new UIPermission(UIPermissionWindow.AllWindows).Assert(); // BlessedAssert
try
{
hwnd = window.Handle;
}
finally
{
CodeAccessPermission.RevertAssert();
}
NativeMethods.RECT rc = new NativeMethods.RECT(0, 0, 0, 0);
SafeNativeMethods.GetClientRect(new HandleRef(null, hwnd), ref rc);
// Convert to mil measure units.
Point minPoint = new Point(rc.left, rc.top);
Point maxPoint = new Point(rc.right, rc.bottom);
CompositionTarget compositionTarget = source.CompositionTarget;
minPoint = compositionTarget.TransformFromDevice.Transform(minPoint);
maxPoint = compositionTarget.TransformFromDevice.Transform(maxPoint);
// Convert to local coordinates.
GeneralTransform transform = compositionTarget.RootVisual.TransformToDescendant(This.UiScope);
if (transform != null)
{
transform.TryTransform(minPoint, out minPoint);
transform.TryTransform(maxPoint, out maxPoint);
// Finally, do the clip.
horizontalOffset = ClipToBounds(minPoint.X, horizontalOffset, maxPoint.X);
verticalOffset = ClipToBounds(minPoint.Y, verticalOffset, maxPoint.Y);
}
// ContextMenu code takes care of clipping to desktop.
}
}
private void HandleBoundingRectChange(IntPtr hwnd)
{
NativeMethods.HWND nativeHwnd = NativeMethods.HWND.Cast( hwnd );
NativeMethods.RECT rc32 = new NativeMethods.RECT(0,0,0,0);
// if GetWindwRect fails, most likely the nativeHwnd is an invalid window, so just return.
if (!Misc.GetWindowRect(nativeHwnd, out rc32))
{
return;
}
// Filter... avoid duplicate events
if (hwnd == _lastHwnd && Compare( rc32, _lastRect ))
{
return;
}
AutomationElement rawEl = AutomationElement.FromHandle(hwnd);
//
//
AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs(
AutomationElement.BoundingRectangleProperty,
Rect.Empty,
new Rect (rc32.left, rc32.top, rc32.right - rc32.left, rc32.bottom - rc32.top));
//
ClientEventManager.RaiseEventInThisClientOnly(AutomationElement.AutomationPropertyChangedEvent, rawEl, e);
// save the last hwnd/rect for filtering out duplicates
_lastHwnd = hwnd;
_lastRect = rc32;
}
