third-party libs
This commit is contained in:
Benjamin Palko
parent
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3667 changed files with 854591 additions and 0 deletions
581
third-party/BugTrap-1.3-57bd515/source/HexView.cpp
vendored
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581
third-party/BugTrap-1.3-57bd515/source/HexView.cpp
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/*
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* This is a part of the BugTrap package.
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* Copyright (c) 2005-2009 IntelleSoft.
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* All rights reserved.
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*
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* Description: Hex view control class.
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* Author: Maksim Pyatkovskiy.
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*
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* This source code is only intended as a supplement to the
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* BugTrap package reference and related electronic documentation
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* provided with the product. See these sources for detailed
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* information regarding the BugTrap package.
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*/
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#include "StdAfx.h"
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#include "HexView.h"
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#include "BugTrapUtils.h"
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#include "Globals.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#endif
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#define USE_MEM_DC
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#ifndef SPI_GETWHEELSCROLLLINES
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#define SPI_GETWHEELSCROLLLINES 0x0068
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#endif
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#ifndef SPI_SETWHEELSCROLLLINES
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#define SPI_SETWHEELSCROLLLINES 0x0069
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#endif
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/// Default number of wheel lines.
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static const DWORD g_dwDefaultNumWheels = 3;
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void CHexView::InitVars(void)
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{
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m_hwnd = NULL;
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m_pfnOldHexViewWndProc = NULL;
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m_lOldStyle = 0;
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m_nWheelLines = g_dwDefaultNumWheels;
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ResetFile();
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}
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/**
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* @param hdc - drawing conHex.
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* @param prcPaint - the rectangle where the painting is requested.
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*/
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void CHexView::DrawHexView(HDC hdc, const RECT* prcPaint)
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{
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_ASSERTE(g_pResManager != NULL);
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if (prcPaint == NULL)
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{
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RECT rcClient;
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GetClientRect(m_hwnd, &rcClient);
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prcPaint = &rcClient;
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}
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if (IsRectEmpty(prcPaint))
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return;
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#ifdef USE_MEM_DC
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int nClientWidth = prcPaint->right - prcPaint->left;
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int nClientHeight = prcPaint->bottom - prcPaint->top;
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HBITMAP hbmpMem;
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hbmpMem = CreateCompatibleBitmap(hdc, nClientWidth, nClientHeight);
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if (hbmpMem == NULL)
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return;
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HDC hdcMem;
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hdcMem = CreateCompatibleDC(hdc);
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if (hdcMem == NULL)
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{
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DeleteBitmap(hbmpMem);
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return;
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}
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SetViewportOrgEx(hdcMem, -prcPaint->left, -prcPaint->top, NULL);
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HBITMAP hbmpSafe = SelectBitmap(hdcMem, hbmpMem);
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#else
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// CS_PARENTDC sets the clipping rectangle of the child window to that of the parent window
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// so that the child can draw on the parent. Text view inherits this style from sub-classed
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// static control. This causes problems with unclipped TabbedTextOut() output.
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HRGN hrgn = CreateRectRgnIndirect(prcPaint);
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SelectClipRgn(hdc, hrgn);
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DeleteRgn(hrgn);
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HDC hdcMem = hdc;
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#endif
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FillRect(hdcMem, prcPaint, g_pResManager->m_hbrWindowBrush);
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COLORREF rgbOldTextColor = SetTextColor(hdcMem, GetSysColor(COLOR_WINDOWTEXT));
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COLORREF rgbOldBackground = SetBkColor(hdcMem, GetSysColor(COLOR_WINDOW));
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HFONT hOldFont = g_pResManager->m_hFixedFont ? SelectFont(hdcMem, g_pResManager->m_hFixedFont) : NULL;
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TEXTMETRIC tmetr;
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::GetTextMetrics(hdcMem, &tmetr);
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DWORD dwNumLines = m_dwFileSize / LINE_WIDTH;
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if (m_dwFileSize % LINE_WIDTH)
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++dwNumLines;
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DWORD dwTopLineNum = GetScrollPos(m_hwnd, SB_VERT);
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DWORD dwTopVisLineNum = dwTopLineNum + prcPaint->top / tmetr.tmHeight;
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if (dwTopVisLineNum < dwNumLines)
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{
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int nHorPos = tmetr.tmAveCharWidth - GetScrollPos(m_hwnd, SB_HORZ);
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int nVertPos = prcPaint->top - prcPaint->top % tmetr.tmHeight, nTopPos = nVertPos;
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DWORD dwNumVisLines = prcPaint->bottom / tmetr.tmHeight;
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if (prcPaint->bottom % tmetr.tmHeight)
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++dwNumVisLines;
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DWORD dwBottomVisLineNum = dwTopLineNum + dwNumVisLines - 1;
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if (dwBottomVisLineNum >= dwNumLines)
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dwBottomVisLineNum = dwNumLines - 1;
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int nBottomPos = nVertPos + (dwBottomVisLineNum - dwTopVisLineNum + 1) * tmetr.tmHeight;
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int nOffsetWidth = 10 * tmetr.tmAveCharWidth;
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int nLineWidth = (3 * LINE_WIDTH + 2) * tmetr.tmAveCharWidth;
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int nLinePos = nOffsetWidth + nLineWidth - tmetr.tmAveCharWidth * 3 / 2;
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for (DWORD dwLineNum = dwTopVisLineNum; dwLineNum <= dwBottomVisLineNum; ++dwLineNum)
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{
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CacheLine(dwLineNum);
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TCHAR szHexLine[3 * LINE_WIDTH], szTextLine[2 * LINE_WIDTH];
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PBYTE pbLine = m_pbCache + (dwLineNum - m_dwFirstCachedLine) * LINE_WIDTH;
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DWORD dwOffset = dwLineNum * LINE_WIDTH, dwNumBytes = m_dwFileSize - dwOffset;
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if (dwNumBytes > LINE_WIDTH)
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dwNumBytes = LINE_WIDTH;
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DWORD dwLinePos = 0, dwCharPos = 0;
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for (DWORD dwBytePos = 0; dwBytePos < dwNumBytes; ++dwBytePos)
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{
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BYTE bValue = pbLine[dwBytePos];
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BYTE bDigit = (bValue >> 4) & 0x0F;
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szHexLine[dwLinePos++] = bDigit < 0x0A ? bDigit + _T('0') : bDigit - 0x0A + _T('A');
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bDigit = bValue & 0x0F;
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szHexLine[dwLinePos++] = bDigit < 0x0A ? bDigit + _T('0') : bDigit - 0x0A + _T('A');
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szHexLine[dwLinePos++] = _T(' ');
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WORD wCharType = 0;
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GetStringTypeA(LOCALE_USER_DEFAULT, CT_CTYPE1, (PCSTR)&bValue, 1, &wCharType);
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if (wCharType & (C1_ALPHA | C1_DIGIT | C1_PUNCT) || bValue == ' ')
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{
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#ifdef _UNICODE
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dwCharPos += MultiByteToWideChar(CP_ACP, 0, (PCSTR)&bValue, 1, szTextLine + dwCharPos, 2);
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#else
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szTextLine[dwCharPos++] = bValue;
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#endif
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}
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else
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szTextLine[dwCharPos++] = _T('.');
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}
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TCHAR szOffset[11];
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_stprintf_s(szOffset, countof(szOffset), _T("%08X: "), dwOffset);
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int nPosition = nHorPos;
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TextOut(hdcMem, nPosition, nVertPos, szOffset, 10);
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nPosition += nOffsetWidth;
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TextOut(hdcMem, nPosition, nVertPos, szHexLine, dwLinePos);
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nPosition += nLineWidth;
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TextOut(hdcMem, nPosition, nVertPos, szTextLine, dwCharPos);
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nVertPos += tmetr.tmHeight;
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}
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int nPosition = nHorPos + nLinePos;
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MoveToEx(hdcMem, nPosition, nTopPos, NULL);
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LineTo(hdcMem, nPosition, nBottomPos);
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}
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SetTextColor(hdcMem, rgbOldTextColor);
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SetBkColor(hdcMem, rgbOldBackground);
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if (hOldFont)
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SelectFont(hdcMem, hOldFont);
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#ifdef USE_MEM_DC
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BitBlt(hdc, prcPaint->left, prcPaint->top, nClientWidth, nClientHeight, hdcMem, prcPaint->left, prcPaint->top, SRCCOPY);
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SelectBitmap(hdcMem, hbmpSafe);
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DeleteDC(hdcMem);
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DeleteBitmap(hbmpMem);
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#endif
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}
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/**
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* @param bIgnoreScrollPos - pass true to disregard any existing scrollbar styles.
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*/
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void CHexView::ResizeHexView(BOOL bIgnoreScrollPos)
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{
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TEXTMETRIC tmetr;
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GetTextMetrics(&tmetr);
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SCROLLINFO sinfo;
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RECT rcClient;
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GetClientRect(m_hwnd, &rcClient);
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ZeroMemory(&sinfo, sizeof(sinfo));
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sinfo.cbSize = sizeof(sinfo);
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sinfo.fMask = SIF_POS | SIF_RANGE;
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GetScrollInfo(m_hwnd, SB_HORZ, &sinfo);
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int nOldHorPos = ! bIgnoreScrollPos ? sinfo.nPos : 0;
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int nWidth = (10 + 3 * LINE_WIDTH + 2 + LINE_WIDTH) * tmetr.tmAveCharWidth;
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sinfo.fMask = SIF_POS | SIF_PAGE | SIF_RANGE;
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sinfo.nMin = 0;
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if (sinfo.nMax < nWidth - 1)
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sinfo.nMax = nWidth - 1;
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sinfo.nPage = rcClient.right;
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ValidateScrollInfo(&sinfo);
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int nHorOffset = nOldHorPos - sinfo.nPos;
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SetScrollInfo(m_hwnd, SB_HORZ, &sinfo, TRUE);
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GetClientRect(m_hwnd, &rcClient);
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ZeroMemory(&sinfo, sizeof(sinfo));
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sinfo.cbSize = sizeof(sinfo);
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int nOldVertPos;
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if (! bIgnoreScrollPos)
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{
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sinfo.fMask = SIF_POS;
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GetScrollInfo(m_hwnd, SB_VERT, &sinfo);
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nOldVertPos = sinfo.nPos;
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}
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else
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nOldVertPos = sinfo.nPos = 0;
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int nNumLines = m_dwFileSize / LINE_WIDTH;
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if (m_dwFileSize % LINE_WIDTH)
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++nNumLines;
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sinfo.fMask = SIF_POS | SIF_PAGE | SIF_RANGE;
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sinfo.nMin = 0;
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sinfo.nMax = nNumLines > 0 ? nNumLines - 1 : 0;
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sinfo.nPage = rcClient.bottom / tmetr.tmHeight;
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ValidateScrollInfo(&sinfo);
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int nVertOffset = (nOldVertPos - sinfo.nPos) * tmetr.tmHeight;
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SetScrollInfo(m_hwnd, SB_VERT, &sinfo, TRUE);
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GetClientRect(m_hwnd, &rcClient);
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// Explicitly clip output to override style CS_PARENTDC.
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ScrollWindowEx(m_hwnd, nHorOffset, nVertOffset, &rcClient, &rcClient, NULL, NULL, SW_INVALIDATE);
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UpdateWindow(m_hwnd);
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}
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/**
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* @param pTextMetric - pointer to Hex metric structure.
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*/
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void CHexView::GetTextMetrics(PTEXTMETRIC pTextMetric)
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{
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HDC hdc = GetDC(m_hwnd);
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HFONT hOldFont = g_pResManager->m_hFixedFont ? SelectFont(hdc, g_pResManager->m_hFixedFont) : NULL;
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::GetTextMetrics(hdc, pTextMetric);
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if (hOldFont)
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SelectFont(hdc, hOldFont);
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ReleaseDC(m_hwnd, hdc);
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}
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/**
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* @param nScrollBarType - scrollbar type.
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* @param nScrollCode - scroll code.
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*/
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void CHexView::ScrollHexView(int nScrollBarType, int nScrollCode)
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{
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_ASSERTE(nScrollBarType == SB_HORZ || nScrollBarType == SB_VERT);
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SCROLLINFO sinfo;
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ZeroMemory(&sinfo, sizeof(sinfo));
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sinfo.cbSize = sizeof(sinfo);
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sinfo.fMask = SIF_POS | SIF_PAGE | SIF_RANGE;
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if (nScrollCode == SB_THUMBTRACK)
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sinfo.fMask |= SIF_TRACKPOS;
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GetScrollInfo(m_hwnd, nScrollBarType, &sinfo);
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int nOldPos = sinfo.nPos;
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TEXTMETRIC tmetr;
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GetTextMetrics(&tmetr);
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int nLineOffset = nScrollBarType == SB_HORZ ? tmetr.tmAveCharWidth : 1;
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switch (nScrollCode)
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{
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case SB_LINEUP:
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//case SB_LINELEFT:
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sinfo.nPos -= nLineOffset;
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break;
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case SB_LINEDOWN:
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//case SB_LINERIGHT:
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sinfo.nPos += nLineOffset;
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break;
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case SB_PAGEUP:
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//case SB_PAGELEFT:
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sinfo.nPos -= sinfo.nPage;
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break;
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case SB_PAGEDOWN:
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//case SB_PAGERIGHT:
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sinfo.nPos += sinfo.nPage;
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break;
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case SB_THUMBTRACK:
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sinfo.nPos = sinfo.nTrackPos;
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break;
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case SB_TOP:
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//case SB_LEFT:
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sinfo.nPos = 0;
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break;
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case SB_BOTTOM:
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//case SB_RIGHT:
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sinfo.nPos = sinfo.nMax;
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break;
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default:
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return;
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}
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ValidateScrollInfo(&sinfo);
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sinfo.fMask = SIF_POS;
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SetScrollInfo(m_hwnd, nScrollBarType, &sinfo, TRUE);
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if (sinfo.nPos != nOldPos)
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{
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int nHorOffset, nVertOffset;
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if (nScrollBarType == SB_HORZ)
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{
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nHorOffset = nOldPos - sinfo.nPos;
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nVertOffset = 0;
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}
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else
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{
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nHorOffset = 0;
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nVertOffset = (nOldPos - sinfo.nPos) * tmetr.tmHeight;
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}
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RECT rcClient;
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GetClientRect(m_hwnd, &rcClient);
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// Explicitly clip output to override style CS_PARENTDC.
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ScrollWindowEx(m_hwnd, nHorOffset, nVertOffset, &rcClient, &rcClient, NULL, NULL, SW_INVALIDATE);
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UpdateWindow(m_hwnd);
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}
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}
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/**
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* @param hwnd - window handle.
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* @param uMsg - message identifier.
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* @param wParam - first message parameter.
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* @param lParam - second message parameter.
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*/
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LRESULT CALLBACK CHexView::HexViewWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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PAINTSTRUCT ps;
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HDC hdc;
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int zDelta, zTotal, nScrollCode, nScrollBarType;
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LONG lWindowStyle;
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CHexView* _this = (CHexView*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
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_ASSERTE(_this != NULL);
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switch(uMsg)
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{
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case WM_LBUTTONDOWN:
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SetFocus(hwnd);
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return 0;
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case WM_ERASEBKGND:
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return TRUE;
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case WM_PAINT:
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hdc = (HDC)wParam;
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if (! hdc)
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{
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hdc = BeginPaint(hwnd, &ps);
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if (hdc)
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{
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_this->DrawHexView(hdc, &ps.rcPaint);
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EndPaint(hwnd, &ps);
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}
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}
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else
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_this->DrawHexView(hdc, NULL);
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return 0;
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case WM_PRINTCLIENT:
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hdc = (HDC)wParam;
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_this->DrawHexView(hdc, NULL);
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return 0;
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case WM_SIZE:
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_this->ResizeHexView(FALSE);
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return 0;
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case WM_KEYDOWN:
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switch (wParam)
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{
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case VK_LEFT:
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_this->ScrollHexView(SB_HORZ, SB_LINELEFT);
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break;
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case VK_UP:
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_this->ScrollHexView(SB_VERT, SB_LINEUP);
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break;
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case VK_RIGHT:
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_this->ScrollHexView(SB_HORZ, SB_LINERIGHT);
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break;
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case VK_DOWN:
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_this->ScrollHexView(SB_VERT, SB_LINEDOWN);
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break;
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case VK_HOME:
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if (GetKeyState(VK_CONTROL) < 0)
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_this->ScrollHexView(SB_VERT, SB_TOP);
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else
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_this->ScrollHexView(SB_HORZ, SB_LEFT);
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break;
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case VK_END:
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if (GetKeyState(VK_CONTROL) < 0)
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_this->ScrollHexView(SB_VERT, SB_BOTTOM);
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else
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_this->ScrollHexView(SB_HORZ, SB_RIGHT);
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break;
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case VK_PRIOR:
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_this->ScrollHexView(SB_VERT, SB_PAGEUP);
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break;
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case VK_NEXT:
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_this->ScrollHexView(SB_VERT, SB_PAGEDOWN);
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break;
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}
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return 0;
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case WM_HSCROLL:
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_this->ScrollHexView(SB_HORZ, LOWORD(wParam));
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return 0;
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case WM_VSCROLL:
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_this->ScrollHexView(SB_VERT, LOWORD(wParam));
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return 0;
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case WM_MOUSEWHEEL:
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zDelta = (int)(short)HIWORD(wParam);
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if (_this->m_nWheelLines == WHEEL_PAGESCROLL)
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nScrollCode = zDelta > 0 ? SB_PAGEUP : SB_PAGEDOWN;
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else
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nScrollCode = zDelta > 0 ? SB_LINEUP : SB_LINEDOWN;
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zTotal = abs(zDelta) / WHEEL_DELTA;
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if (_this->m_nWheelLines != WHEEL_PAGESCROLL)
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zTotal *= _this->m_nWheelLines;
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lWindowStyle = GetWindowLong(hwnd, GWL_STYLE);
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if (lWindowStyle & WS_VSCROLL)
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nScrollBarType = SB_VERT;
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else if (lWindowStyle & WS_HSCROLL)
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nScrollBarType = SB_HORZ;
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else
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return 0;
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for (int i = 0; i < zTotal; ++i)
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_this->ScrollHexView(nScrollBarType, nScrollCode);
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return 0;
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case WM_SETTINGCHANGE:
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if (wParam == SPI_SETWHEELSCROLLLINES)
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{
|
||||
if (! SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &_this->m_nWheelLines, 0))
|
||||
_this->m_nWheelLines = g_dwDefaultNumWheels;
|
||||
}
|
||||
return 0;
|
||||
case WM_GETDLGCODE:
|
||||
return DLGC_WANTARROWS;
|
||||
default:
|
||||
return DefWindowProc(hwnd, uMsg, wParam, lParam);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param hwnd - hex view window handle.
|
||||
*/
|
||||
void CHexView::Attach(HWND hwnd)
|
||||
{
|
||||
_ASSERTE(hwnd != NULL);
|
||||
_ASSERTE(m_hwnd == NULL);
|
||||
_ASSERTE(g_pResManager != NULL);
|
||||
|
||||
if (! SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &m_nWheelLines, 0))
|
||||
m_nWheelLines = g_dwDefaultNumWheels;
|
||||
|
||||
m_hwnd = hwnd;
|
||||
m_pfnOldHexViewWndProc = SubclassWindow(hwnd, HexViewWndProc);
|
||||
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)this);
|
||||
// Preserve original window styles that could be modified by SetScrollInfo().
|
||||
m_lOldStyle = GetWindowLong(hwnd, GWL_STYLE);
|
||||
ResizeHexView(TRUE);
|
||||
InvalidateRect(m_hwnd, NULL, FALSE);
|
||||
}
|
||||
|
||||
void CHexView::Detach(void)
|
||||
{
|
||||
if (m_pfnOldHexViewWndProc)
|
||||
{
|
||||
SubclassWindow(m_hwnd, m_pfnOldHexViewWndProc);
|
||||
SetWindowLongPtr(m_hwnd, GWLP_USERDATA, NULL);
|
||||
|
||||
SCROLLINFO sinfo;
|
||||
ZeroMemory(&sinfo, sizeof(sinfo));
|
||||
sinfo.cbSize = sizeof(sinfo);
|
||||
sinfo.fMask = SIF_POS | SIF_PAGE | SIF_RANGE;
|
||||
SetScrollInfo(m_hwnd, SB_HORZ, &sinfo, FALSE);
|
||||
SetScrollInfo(m_hwnd, SB_VERT, &sinfo, FALSE);
|
||||
SetWindowLong(m_hwnd, GWL_STYLE, m_lOldStyle);
|
||||
|
||||
InvalidateRect(m_hwnd, NULL, TRUE);
|
||||
InitVars();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param hFile - file handle.
|
||||
*/
|
||||
void CHexView::SetFile(HANDLE hFile)
|
||||
{
|
||||
_ASSERTE(hFile != INVALID_HANDLE_VALUE);
|
||||
_ASSERTE(m_hFile == INVALID_HANDLE_VALUE);
|
||||
_ASSERTE(m_hwnd != NULL);
|
||||
m_hFile = hFile;
|
||||
SetFilePointer(hFile, 0, NULL, FILE_BEGIN);
|
||||
LoadCache();
|
||||
ResizeHexView(TRUE);
|
||||
InvalidateRect(m_hwnd, NULL, FALSE);
|
||||
}
|
||||
|
||||
void CHexView::ResetFile(void)
|
||||
{
|
||||
m_hFile = INVALID_HANDLE_VALUE;
|
||||
m_dwFirstCachedLine = m_dwFileSize = 0;
|
||||
delete[] m_pbCache;
|
||||
m_pbCache = NULL;
|
||||
}
|
||||
|
||||
void CHexView::LoadCache(void)
|
||||
{
|
||||
_ASSERTE(m_hFile != INVALID_HANDLE_VALUE);
|
||||
m_dwFileSize = GetFileSize(m_hFile, NULL);
|
||||
m_dwFirstCachedLine = 0;
|
||||
DWORD dwCacheSize = min(m_dwFileSize, CACHE_SIZE);
|
||||
m_pbCache = new BYTE[dwCacheSize];
|
||||
if (m_pbCache == NULL)
|
||||
{
|
||||
ResetFile();
|
||||
goto end;
|
||||
}
|
||||
DWORD dwNumRead = 0;
|
||||
ReadFile(m_hFile, m_pbCache, dwCacheSize, &dwNumRead, NULL);
|
||||
|
||||
end:
|
||||
ResizeHexView(TRUE);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param dwCachedLineNum - index of cached line.
|
||||
*/
|
||||
void CHexView::CacheLine(DWORD dwCachedLineNum)
|
||||
{
|
||||
DWORD dwCacheSize = min(m_dwFileSize, CACHE_SIZE);
|
||||
DWORD dwNumCachedLines = dwCacheSize / LINE_WIDTH;
|
||||
if (dwCacheSize % LINE_WIDTH)
|
||||
++dwNumCachedLines;
|
||||
if (dwCachedLineNum >= m_dwFirstCachedLine && dwCachedLineNum < m_dwFirstCachedLine + dwNumCachedLines)
|
||||
return;
|
||||
|
||||
DWORD dwFirstCachedLine = dwCachedLineNum > NUMBER_OF_CACHED_LINES / 2 ? dwCachedLineNum - NUMBER_OF_CACHED_LINES / 2 : 0;
|
||||
DWORD dwFirstMappedLine, dwNumMappedLines, dwFirstLoadedLine, dwNumLoadedLines, dwFromMemOffset, dwToMemOffset, dwLoadOffset;
|
||||
if (m_dwFirstCachedLine <= dwFirstCachedLine && dwFirstCachedLine < m_dwFirstCachedLine + dwNumCachedLines)
|
||||
{
|
||||
dwFirstMappedLine = dwFirstCachedLine;
|
||||
dwNumMappedLines = dwNumCachedLines - (dwFirstCachedLine - m_dwFirstCachedLine);
|
||||
dwFirstLoadedLine = dwFirstMappedLine + dwNumMappedLines;
|
||||
dwNumLoadedLines = dwNumCachedLines - dwNumMappedLines;
|
||||
dwFromMemOffset = (dwFirstMappedLine - m_dwFirstCachedLine) * LINE_WIDTH;
|
||||
dwToMemOffset = 0;
|
||||
dwLoadOffset = dwNumMappedLines * LINE_WIDTH;
|
||||
}
|
||||
else if (dwFirstCachedLine <= m_dwFirstCachedLine && m_dwFirstCachedLine < dwFirstCachedLine + dwNumCachedLines)
|
||||
{
|
||||
dwFirstMappedLine = m_dwFirstCachedLine;
|
||||
dwNumMappedLines = dwNumCachedLines - (m_dwFirstCachedLine - dwFirstCachedLine);
|
||||
dwFirstLoadedLine = dwFirstCachedLine;
|
||||
dwNumLoadedLines = dwNumCachedLines - dwNumMappedLines;
|
||||
dwFromMemOffset = (dwFirstMappedLine - m_dwFirstCachedLine) * LINE_WIDTH;
|
||||
dwToMemOffset = dwNumLoadedLines * LINE_WIDTH;
|
||||
dwLoadOffset = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
dwFirstMappedLine = dwNumMappedLines = dwFromMemOffset = dwToMemOffset = 0;
|
||||
dwFirstLoadedLine = dwFirstCachedLine;
|
||||
dwNumLoadedLines = dwNumCachedLines;
|
||||
dwLoadOffset = 0;
|
||||
}
|
||||
|
||||
_ASSERTE(m_pbCache != NULL);
|
||||
if (dwNumMappedLines > 0)
|
||||
MoveMemory(m_pbCache + dwToMemOffset, m_pbCache + dwFromMemOffset, dwNumMappedLines * LINE_WIDTH);
|
||||
|
||||
if (dwNumLoadedLines > 0)
|
||||
{
|
||||
SetFilePointer(m_hFile, dwFirstLoadedLine * LINE_WIDTH, NULL, FILE_BEGIN);
|
||||
DWORD dwNumRead = 0;
|
||||
ReadFile(m_hFile, m_pbCache + dwLoadOffset, dwNumLoadedLines * LINE_WIDTH, &dwNumRead, NULL);
|
||||
}
|
||||
|
||||
m_dwFirstCachedLine = dwFirstCachedLine;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue