private void CreateHwndSource(IntPtr handle)
{
var rect = GetContainerArea(handle);
var hwndSourceParameters = new HwndSourceParameters()
{
ParentWindow = handle,
AcquireHwndFocusInMenuMode = false,
PositionX = rect.Left,
PositionY = rect.Top,
Width = rect.Width,
Height = rect.Height,
WindowStyle = -2113929216,
ExtendedWindowStyle = 524292 | Win32NativeMethods.WS_EX_TRANSPARENT,
UsesPerPixelOpacity = true,
WindowName = FrameName,
};
var hwndSource = new HwndSource(hwndSourceParameters)
{
RootVisual = this
};
var tableAbove = Win32NativeMethods.GetWindow(handle, (uint)GetWindowConsts.GW_HWNDPREV);
Win32NativeMethods.SetWindowPos(hwndSource.Handle, tableAbove, 0, 0, 0, 0, (uint)SetWindowPosConsts.SWP_SHOWWINDOW | (uint)SetWindowPosConsts.SWP_NOACTIVATE | (uint)SetWindowPosConsts.SWP_NOMOVE | (uint)SetWindowPosConsts.SWP_NOSIZE);
_hwndSource = hwndSource;
}
private Rect GetContainerArea(IntPtr handle)
{
var area = new Rect();
Win32NativeMethods.GetWindowRect(handle, ref area);
return(area);
}
public void RefreshPosition(IntPtr handle)
{
var rect = GetContainerArea(handle);
Win32NativeMethods.MoveWindow(_hwndSource.Handle, rect.Left, rect.Top, rect.Width, rect.Height, true);
}