private void ResetButtonState(Button btn)
{
if(null == btn || preClickedButton == null || preClickedButton.Equals(btn))
{
return;
}
ResetButtonBackgroudAndPic(btn);
preClickedButton = btn;
if (!btn.Equals(colorBtn) && !btn.Equals(colorBtnWp))
{
CollapseColorButton();
}
}
