用MFC生成的文档应该怎样打印出来?
我用list视图创建了一个SDI程序,往里面添加了一些项后,想打印出来,可是按"文件"->"打印预览"后却发现是一片空白,请问怎样才能"所见即所得"呢? 问题点数：20、回复次数：6Top
1 楼zhangyiheng（傻瓜）回复于 2006-03-04 22:43:47 得分 0
是不是打印的代码要重新写过?Top
2 楼Mackz（在相互）回复于 2006-03-05 02:02:36 得分 0
是的。
网上有个ListCtrl的打印程序，可以找找。我也正好做过一个，需要可以提供。Top
3 楼Mackz（在相互）回复于 2006-03-05 02:04:10 得分 0
int PrintListCtrl(CDC *pDC, CListCtrl *pPrintList, int nPage, CRect *prcPrint)
{
static CArray<int, int> aPageItem;
if (!pDC)
{
aPageItem.RemoveAll();
aPageItem.Add(0);
return 0;
}
CFont *pFont = pPrintList->GetFont();
LOGFONT lgFont;
pFont->GetLogFont(&lgFont);
//lstrcpy(lgFont.lfFaceName, _T("黑体"));
lgFont.lfWeight = FW_BOLD;
pFont = new CFont;
pFont->CreateFontIndirect(&lgFont);
CFont *pFontOld = pDC->SelectObject(pFont);
CPoint ptOrg = pDC->GetWindowOrg();
CHeaderCtrl *pHeader = pPrintList->GetHeaderCtrl();
TEXTMETRIC /*tmCtl, */tmDC;
//pPrintList->GetDC()->GetTextMetrics(&tmCtl);
pDC->GetTextMetrics(&tmDC);
int nWidth = 0, nMargin = tmDC.tmHeight, nHeight = tmDC.tmHeight + tmDC.tmExternalLeading + nMargin;
//double dRatio = (double)tmDC.tmHeight / (double)tmCtl.tmHeight;
HDITEM hiItem = {0};
TCHAR lpBuffer[256] = {0};
hiItem.mask = HDI_TEXT | HDI_WIDTH;
hiItem.pszText = lpBuffer;
hiItem.cchTextMax = 250;
int nColumn = pHeader->GetItemCount();
CRect *prcItem = new CRect[nColumn];
CString *pstrItem = new CString[nColumn];
for (int i = 0; i < nColumn; i++)
{
pHeader->GetItem(i, &hiItem);
prcItem[i].SetRect(nWidth, 0, nWidth + hiItem.cxy, tmDC.tmHeight);
nWidth += hiItem.cxy;
pstrItem[i] = hiItem.pszText;
prcItem[i].bottom = prcItem[i].top +
pDC->DrawText(pstrItem[i], prcItem[i], DT_CENTER | DT_WORDBREAK | DT_CALCRECT);
prcItem[i].right = prcItem[i].left + hiItem.cxy;
if (prcItem[i].Height() > nHeight)
nHeight = prcItem[i].Height() + nMargin;
}
CSize szArea = pDC->GetWindowExt();
int nWidthArea = abs(szArea.cx);
if (nWidth > nWidthArea)
{
double dRatioWidth = (double)szArea.cx / (double)nWidth;
prcItem[0].right = prcItem[0].left + int(prcItem[0].Width() * dRatioWidth);
nWidth = prcItem[0].Width();
for (int i = 1; i < nColumn; i++)
{
prcItem[i].right = prcItem[i - 1].right + int(prcItem[i].Width() * dRatioWidth);
prcItem[i].left = prcItem[i - 1].right;
nWidth += prcItem[i].Width();
}
}
pDC->SetWindowOrg((nWidth - nWidthArea) / 2, ptOrg.y);
for (int iCol = 0; iCol < nColumn; iCol++)
{
CRect rcBorder(prcItem[iCol]);
rcBorder.bottom = rcBorder.top + nHeight;
pDC->Rectangle(rcBorder);
prcItem[iCol].OffsetRect(0, (nHeight - prcItem[iCol].Height()) / 2);
pDC->DrawText(pstrItem[iCol], prcItem[iCol], DT_CENTER | DT_WORDBREAK);
}
pDC->SelectObject(pFontOld);
pFont->DeleteObject();
delete pFont;
pDC->GetTextMetrics(&tmDC);
nMargin = tmDC.tmHeight;
nHeight = tmDC.tmHeight + tmDC.tmExternalLeading + nMargin;
int nTop = nHeight;
int iRow = 0;
for (iRow = aPageItem[nPage - 1]; iRow < pPrintList->GetItemCount(); iRow++)
{
nHeight = tmDC.tmHeight + nMargin;
for (int iCol = 0; iCol < nColumn; iCol++)
{
pstrItem[iCol] = pPrintList->GetItemText(iRow, iCol);
prcItem[iCol].top = nTop;
prcItem[iCol].bottom = nTop + tmDC.tmHeight;
nWidth = prcItem[iCol].Width();
prcItem[iCol].bottom = prcItem[iCol].top +
pDC->DrawText(pstrItem[iCol], prcItem[iCol], DT_CENTER | DT_WORDBREAK | DT_CALCRECT);
prcItem[iCol].right = prcItem[iCol].left + nWidth;
if (prcItem[iCol].Height() > nHeight)
nHeight = prcItem[iCol].Height() + nMargin;
}
nTop += nHeight;
nWidth = prcItem[iCol - 1].right;
for (int iCol = 0; iCol < nColumn; iCol++)
{
CRect rcBorder(prcItem[iCol]);
rcBorder.bottom = rcBorder.top + nHeight;
pDC->Rectangle(rcBorder);
prcItem[iCol].OffsetRect(0, (nHeight - prcItem[iCol].Height()) / 2);
pDC->DrawText(pstrItem[iCol], prcItem[iCol], DT_CENTER | DT_WORDBREAK);
}
if (nTop + ptOrg.y - pDC->GetWindowOrg().y > szArea.cy - 160)
break;
}
aPageItem.Add(iRow);
delete []pstrItem;
delete []prcItem;
if (prcPrint)
prcPrint->SetRect(ptOrg.x - pDC->GetWindowOrg().x, ptOrg.y - pDC->GetWindowOrg().y,
nWidth + ptOrg.x - pDC->GetWindowOrg().x, nTop + ptOrg.y - pDC->GetWindowOrg().y);
pDC->SetWindowOrg(ptOrg);
return iRow;
}
Top
4 楼zhangyiheng（傻瓜）回复于 2006-03-05 10:13:36 得分 0
上面这段程序是不是要在classwizard里面添加的?Top
5 楼zxw2844（赵轩）回复于 2006-03-10 11:46:40 得分 0
本人也是這個問題..
建立了個SDI程序,..建工程時,已經加入了打印功能,
我加入個畫圖事件,每次畫的圖都不一樣, 可是在我打印預覽時,是空白,---我又將畫圖的代碼加到OnDraw(CDC* pDC)中去,印預覽時,也是空白,......Top
6 楼Mackz（在相互）回复于 2006-03-10 12:56:17 得分 0
PrintListCtrl是一个全局函数。当然也可以作为成员函数使用。Top
