MFC ActiveX controls paint incorrectly when scrolling the HTML page

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IE 에 MFC ActiveX를 올리고 IE를 ActiveX보다 작게 만들면 scroll이 생긴다. 이 scroll을 움직이면 움직이는 방향에 수직으로 선이 그려지면서 화면이 짤린 것 처럼 나타난다.

ms site에는 IE6 sp1 이후로 재 발생된다고 하였으나 IE7도 동일하게 발생하는 것을 확인할 수 있다.

아래의 코드를 추가하면 해결이 된다.

void MyGetClippingCoordinates(LPCRECT pPosRect, LPCRECT pClipRect, 
LPRECT pIntersectRect, LPPOINT pOffsetPoint) 

{ 

int clipLeft = 0; 
int clipTop = 0; 

if ((pClipRect == NULL) || IsRectEmpty(pClipRect)) 
{ 

CopyRect(pIntersectRect, pPosRect); 

} 
else 
{ 

IntersectRect(pIntersectRect, pPosRect, pClipRect); 
clipLeft = pClipRect->left; 
clipTop = pClipRect->top; 

} 

pOffsetPoint->x = min(0, pPosRect->left - clipLeft); 
pOffsetPoint->y = min(0, pPosRect->top - clipTop); 

} 





BOOL XXX::OnSetObjectRects(LPCRECT lprcPosRect, LPCRECT lprcClipRect) 
{ 

ASSERT(lprcPosRect != NULL); 


// Remember the position rectangle for later 
m_rcPos = *lprcPosRect; 


// Calculate complete rectangle including the tracker (if present) 
CRect rectPos = m_rcPos; 
if (m_bUIActive && m_pRectTracker != NULL) 
{ 

// Save new clipping rectangle (for DestroyTracker) 

if (lprcClipRect != NULL) 
m_pRectTracker->m_rectClip = *lprcClipRect; 

// Adjust tracker rectangle to new dimensions 
CRect rectTmp = rectPos; 
rectTmp.OffsetRect(-rectTmp.left, -rectTmp.top); 
m_pRectTracker->m_rect = rectTmp; 


// Adjust the "true" rectangle to include handles/hatching 
UINT nHandleSize = m_pRectTracker->m_nHandleSize - 1; 
rectPos.InflateRect(nHandleSize, nHandleSize); 

} 

// Now clip that rectangle as appropriate 

CRect rectClip; 

// CHANGE - call your own copy of _GetClippingCoordinates 
MyGetClippingCoordinates(rectPos, lprcClipRect, rectClip, &m_ptOffset); 

// Move outer window first. then inner window 

if (!m_bInPlaceSiteWndless) 
{ 
CWnd* pWndOuter = GetOuterWindow(); 


//BEGIN CHANGE 
if (pWndOuter != NULL) 
{ 

::MoveWindow(pWndOuter->m_hWnd, rectPos.left, rectPos.top, 
rectPos.Width(), rectPos.Height(), TRUE); 

} 

//END CHANGE 

if (pWndOuter != this) 

MoveWindow(0, 0, rectPos.Width(), rectPos.Height()); 

} 

return TRUE; 
}