重写CListCtrl更改行高，但出现内存泄露，请大家帮我看看代码

2010-04-09 09:23:06 220 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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我的代码如下：

void newctrl::SetItemHeight(UINT nHeight)

{

	m_nItemHeight = nHeight;

	CRect rcWin;

	GetWindowRect(&rcWin);

//	GetClientRect(rcWin);

	WINDOWPOS wp;

	wp.hwnd = m_hWnd;

	wp.cx = rcWin.Width();

	wp.cy = rcWin.Height();

	wp.flags = SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOZORDER;

	SendMessage(WM_WINDOWPOSCHANGED, 0, (LPARAM)&wp);

}



void newctrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)

{

	TCHAR  lpBuffer[256];



	LV_ITEM lvi;



	lvi.mask = LVIF_TEXT | LVIF_PARAM ;

	lvi.iItem = lpDrawItemStruct->itemID ; 	

	lvi.iSubItem = 0;

	lvi.pszText = lpBuffer ;

	lvi.cchTextMax = sizeof(lpBuffer);

	VERIFY(GetItem(&lvi));



	LV_COLUMN lvc, lvcprev ;

	::ZeroMemory(&lvc, sizeof(lvc));

	::ZeroMemory(&lvcprev, sizeof(lvcprev));

	lvc.mask = LVCF_WIDTH | LVCF_FMT;

	lvcprev.mask = LVCF_WIDTH | LVCF_FMT;



	for ( int nCol=0; GetColumn(nCol, &lvc); nCol++)

	{

		if ( nCol > 0 ) 

		{

			// Get Previous Column Width in order to move the next display item

			GetColumn(nCol-1, &lvcprev) ;

			lpDrawItemStruct->rcItem.left += lvcprev.cx ;

			lpDrawItemStruct->rcItem.right += lpDrawItemStruct->rcItem.left ;	

		}



		// Get the text 

		::ZeroMemory(&lvi, sizeof(lvi));

		lvi.iItem = lpDrawItemStruct->itemID;

		lvi.mask = LVIF_TEXT | LVIF_PARAM;

		lvi.iSubItem = nCol;

		lvi.pszText = lpBuffer;

		lvi.cchTextMax = sizeof(lpBuffer);

		VERIFY(GetItem(&lvi));



		CDC* pDC;

		pDC = CDC::FromHandle(lpDrawItemStruct->hDC);



		if ( lpDrawItemStruct->itemState & ODS_SELECTED )

		{

			pDC->FillSolidRect(&lpDrawItemStruct->rcItem, GetSysColor(COLOR_HIGHLIGHT)) ; 

			pDC->SetTextColor(GetSysColor(COLOR_HIGHLIGHTTEXT)) ;

		}

		else

		{

			pDC->FillSolidRect(&lpDrawItemStruct->rcItem, GetSysColor(COLOR_WINDOW)) ;

		//	pDC->FillSolidRect(&lpDrawItemStruct->rcItem,RGB(38,123,165)) ;

			pDC->SetTextColor(GetSysColor(COLOR_WINDOWTEXT)) ; 

		}

		

		pDC->SelectObject(GetStockObject(SYSTEM_FONT));



		UINT uFormat=DT_LEFT ;



		::DrawText(lpDrawItemStruct->hDC, lpBuffer, wcslen(lpBuffer), 

			 &lpDrawItemStruct->rcItem, uFormat) ;



		pDC->SelectStockObject(SYSTEM_FONT) ;

	}

}



void newctrl::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)

{

	if(m_nItemHeight>0)

	lpMeasureItemStruct->itemHeight=m_nItemHeight;

}