基于MFC实现自定义复选框效果_C 语言

class UICustomCheck : public CButton 
{
	DECLARE_DYNAMIC(UICustomCheck)
public:
	UICustomCheck();
	virtual ~UICustomCheck();
protected:
	DECLARE_MESSAGE_MAP()
};

CPaintDC  dc(this);
CRect   rcClient;
this->GetClientRect(&rcClient);

//绘制按钮的状态显示
if(m_bState == 0) //未按下
{
	if (!m_ImageUnCheck.IsNull())
	{
		m_ImageUnCheck.Draw(dc.GetSafeHdc() ,rcClient);
	}
}
else{ //按下
	if (!m_ImageCheck.IsNull())
	{
		m_ImageCheck.Draw(dc.GetSafeHdc() , rcClient);
	}
}

void	SetCheck(int nCheck);

void UICustomCheck::OnLButtonUp(UINT nFlags, CPoint point)
{
 	m_bState = !m_bState;
  	if (this->m_hWnd != nullptr)
	{
		CWnd *pParent = this->GetParent();
		CRect rc;
		this->GetWindowRect(rc);
		pParent->ScreenToClient(rc);
		pParent->InvalidateRect(rc, TRUE);
		pParent->UpdateWindow();
	}
  	this->Invalidate(FALSE);
	CButton::OnLButtonUp(nFlags , point);
}