U E D R , A S I H C RSS

레밍즈프로젝트/프로토타입/MFC더블버퍼링

SeeAlso) , 트/, (zeropage)MFC

MFC .

~cpp
#pragma once

class CmyDouBuffDC
{
private:
	CRect m_rt;
	CDC* m_pDC;
	CDC* m_pMemDC;
	CBitmap m_bmp;
public:
	CmyDouBuffDC(CDC *pDC, CRect rt){
		m_rt = rt;
		m_pDC = pDC;
		m_pMemDC = new CDC();
		m_pMemDC->CreateCompatibleDC(m_pDC);
		m_bmp.CreateCompatibleBitmap(m_pDC, m_rt.Width(), m_rt.Height());
		m_pMemDC->SelectObject(&m_bmp);
		m_pMemDC->Rectangle(0, 0, m_rt.Width(), m_rt.Height());
	}
	~CmyDouBuffDC(void){
		m_pDC->BitBlt(0, 0, m_rt.Width(), m_rt.Height(), m_pMemDC, 0, 0, SRCCOPY);
		m_pMemDC->DeleteDC();
		m_bmp.DeleteObject();
	}
	CDC* getMemDC(){return m_pMemDC;}
};

Test OnDraw . OnDraw Invalidate 통해 OnPaint .
OnDraw 트 클 .
~cpp
void CDoubleBufferingView::OnDraw(CDC* pDC)
{
	CDoubleBufferingDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	
	//DoubleBuffering
	CRect rt;
	GetClientRect(&rt);
	CmyDouBuffDC *douDC = new CmyDouBuffDC(pDC, rt);

	//draw
	CDC *memdc = douDC->getMemDC();
	memdc->Ellipse(this->pmBoundBall->x - mi_ballSize, this->pmBoundBall->y - mi_ballSize,
		this->pmBoundBall->x + mi_ballSize, this->pmBoundBall->y + mi_ballSize);

	//end DoubleBuffering
	delete douDC;
}

.
GetClientRect . CRect .

getMemDC() 통해 통해 확DC 포 .

.

.
Valid XHTML 1.0! Valid CSS! powered by MoniWiki
last modified 2021-02-07 05:29:22
Processing time 0.0130 sec