protected override sealed void DestroyWindowOverride(HWND hwnd)
{
Debug.Assert(hwnd.DangerousGetHandle() == _hwndSource.Handle);
_hwndSource.Dispose();
_hwndSource = null;
}
protected override sealed HWND BuildWindowCore(HWND hwndParent)
{
HwndSourceParameters hwndSourceParameters = new HwndSourceParameters();
hwndSourceParameters.WindowStyle = (int)(WS.VISIBLE | WS.CHILD | WS.CLIPSIBLINGS | WS.CLIPCHILDREN);
//hwndSourceParameters.ExtendedWindowStyle = (int)(WS_EX.NOACTIVATE);
hwndSourceParameters.ParentWindow = hwndParent.DangerousGetHandle();
_hwndSource = new HwndSource(hwndSourceParameters);
_hwndSource.SizeToContent = SizeToContent.Manual;
// TODO: make this an option
// On Vista, or when Win7 uses vista-blit, DX content is not
// available via BitBlit or PrintWindow? If WPF is using hardware
// acceleration, anything it renders won't be available either.
// One workaround is to force WPF to use software rendering. Of
// course, this is only a partial workaround since other content
// like XNA or D2D won't work either.
//_hwndSource.CompositionTarget.RenderMode = RenderMode.SoftwareOnly;
// Set the root visual of the HwndSource to an instance of
// HwndSourceHostRoot. Hook it up as a logical child if
// we are on the same thread.
HwndSourceHostRoot root = new HwndSourceHostRoot();
_hwndSource.RootVisual = root;
root.OnMeasure += OnRootMeasured;
AddLogicalChild(_hwndSource.RootVisual);
SetRootVisual(Child);
return new HWND(_hwndSource.Handle);
}
protected override sealed HWND BuildWindowOverride(HWND hwndParent)
{
HwndSourceParameters hwndSourceParameters = new HwndSourceParameters();
hwndSourceParameters.WindowStyle = (int)(WS.VISIBLE | WS.CHILD | WS.CLIPSIBLINGS | WS.CLIPCHILDREN);
hwndSourceParameters.ParentWindow = hwndParent.DangerousGetHandle();
_hwndSource = new HwndSource(hwndSourceParameters);
_hwndSource.SizeToContent = SizeToContent.Manual;
// Set the root visual of the HwndSource to an instance of
// HwndSourceHostRoot. Hook it up as a logical child if
// we are on the same thread.
HwndSourceHostRoot root = new HwndSourceHostRoot();
_hwndSource.RootVisual = root;
root.OnMeasure += OnRootMeasured;
AddLogicalChild(_hwndSource.RootVisual);
SetRootVisual(Child);
return new HWND(_hwndSource.Handle);
}
protected override sealed HandleRef BuildWindowCore(HandleRef hwndParent)
{
HWND hwndParent2 = new HWND(hwndParent.Handle);
_hwndChild = BuildWindowOverride(hwndParent2);
// Ideally, the window would have been created with the expected
// parent. But just in case, we set it explicitly.
NativeMethods.SetParent(_hwndChild, hwndParent2);
return new HandleRef(this, _hwndChild.DangerousGetHandle());
}