// Enables/disables all top-level Controls on this thread
internal void Enable(bool state)
{
if (!_onlyWinForms && !state)
{
_activeHwnd = UnsafeNativeMethods.GetActiveWindow();
Control activatingControl = ThreadContext.FromCurrent().ActivatingControl;
if (activatingControl != null)
{
_focusedHwnd = activatingControl.Handle;
}
else
{
_focusedHwnd = UnsafeNativeMethods.GetFocus();
}
}
for (int i = 0; i < _windowCount; i++)
{
IntPtr hWnd = _windows[i];
Debug.WriteLineIf(CompModSwitches.MSOComponentManager.TraceInfo, "ComponentManager : Changing enabled on window: " + hWnd.ToString() + " : " + state.ToString());
if (UnsafeNativeMethods.IsWindow(new HandleRef(null, hWnd)))
{
SafeNativeMethods.EnableWindow(new HandleRef(null, hWnd), state);
}
}
// OpenFileDialog is not returning the focus the way other dialogs do.
// Important that we re-activate the old window when we are closing
// our modal dialog.
//
// edit mode forever with Excel application
// But, DON'T change other people's state when we're simply
// responding to external MSOCM events about modality. When we are,
// we are created with a TRUE for onlyWinForms.
if (!_onlyWinForms && state)
{
if (_activeHwnd != IntPtr.Zero && UnsafeNativeMethods.IsWindow(new HandleRef(null, _activeHwnd)))
{
UnsafeNativeMethods.SetActiveWindow(new HandleRef(null, _activeHwnd));
}
if (_focusedHwnd != IntPtr.Zero && UnsafeNativeMethods.IsWindow(new HandleRef(null, _focusedHwnd)))
{
UnsafeNativeMethods.SetFocus(new HandleRef(null, _focusedHwnd));
}
}
}