void GUIWindow::AddChild(GUIWindow *child)
{
// Check if the request is valid.
if (child->Parent != 0)
{
MessageBoxA(0, "Tried to add a child window that already has a parent to another window!", "Error!", MB_OK);
return;
}
child->Parent = this;
Children.push_back(child);
// Make recently added children instantly active.
if (!child->Active())
{
SetActiveChild(child);
}
}
void wxGenericMDIParentFrame::WXRemoveChild(wxGenericMDIChildFrame *child)
{
const bool removingActive = WXIsActiveChild(child);
if ( removingActive )
{
SetActiveChild(NULL);
WXSetChildMenuBar(NULL);
}
wxGenericMDIClientWindow * const client = GetGenericClientWindow();
wxCHECK_RET( client, "should have client window" );
wxBookCtrlBase * const book = client->GetBookCtrl();
// Remove page if still there
int pos = client->FindChild(child);
if ( pos != wxNOT_FOUND )
{
if ( book->RemovePage(pos) )
book->Refresh();
}
if ( removingActive )
{
// Set the new selection to a remaining page
const size_t count = book->GetPageCount();
if ( count > (size_t)pos )
{
book->SetSelection(pos);
}
else
{
if ( count > 0 )
book->SetSelection(count - 1);
}
}
}
