int Pusher::GetVisualState() const
{
	//todo: add
	return !IsShowEnabled() ? CTRL_DISABLED :
	       IsPush() ? CTRL_PRESSED :
	       HasMouse() ? CTRL_HOT :
	       pseudoDisable ? CTRL_DISABLED : CTRL_NORMAL;
}

class Pusher : public Ctrl {
public:
    //todo: add
    bool pseudoDisable;
...

Pusher::Pusher() {
    ...
    pseudoDisable = false;
}

	btn_.pseudoDisable = true;
	btn_.Refresh();