印度钦奈天气:如何使用MFC将CListCtrl中内容输出到打印机

//该结构用于存储各列的信息
typedef   struct   tagColAtt
{
int   nColIndex;
CString   strColText;
int   nPrintX;
int   nSubItemIndex;
}COLATT;

BOOL   PrintListCtrl(CListCtrl   &list)
{

PRINTDLG   pd;
pd.lStructSize   =   sizeof(PRINTDLG);
pd.Flags   =   PD_RETURNDC;
pd.hDC   =   NULL;
pd.hwndOwner   =   NULL;
pd.hInstance   =   NULL;
pd.nMaxPage   =   1;
pd.nMinPage   =   1;
pd.nFromPage   =   1;
pd.nToPage     =   1;
pd.nCopies   =   1;
pd.hDevMode   =   NULL;
pd.hDevNames   =   NULL;

//显示打印对话框，由用户来设定纸张大小等。
if(!PrintDlg(&pd))   return   FALSE;  
ASSERT(pd.hDC!=NULL);

int   nHorRes   =   GetDeviceCaps(pd.hDC,   HORZRES);
int   nVerRes   =   GetDeviceCaps(pd.hDC,   VERTRES);
int   nXMargin   =   2;
int   nYMargin   =   2;
TEXTMETRIC   tm;
GetTextMetrics(pd.hDC,   &tm);
int   nCharHeight   =   tm.tmHeight;
int   nCharWidth   =   tm.tmAveCharWidth;


CHeaderCtrl*   pHeader   =   list.GetHeaderCtrl();
//获得行，列的个数
int   nColCount   =   pHeader-> GetItemCount();
int   nLineCount   =   list.GetItemCount();

int   ColOrderArray[100];
COLATT   ca[100];
list.GetColumnOrderArray(ColOrderArray,   nColCount);
int   nColX   =nXMargin*nCharWidth;

//检索各列的信息，确定列标题的内容长度。
for(int   i   =0   ;   i <   nColCount;   i++)
{
ca[i].nColIndex   =   ColOrderArray[i];
LVCOLUMN   lvc;
char   text[100];
lvc.mask   =   LVCF_TEXT|LVCF_SUBITEM;
lvc.pszText   =   text;
lvc.cchTextMax   =   100;
list.GetColumn(ca[i].nColIndex,   &lvc);
ca[i].strColText   =   lvc.pszText;
ca[i].nSubItemIndex   =   lvc.iSubItem;
ca[i].nPrintX   =   nColX;
nColX   +=   nCharWidth   *   strlen(ca[i].strColText);

if(nColX   >   nHorRes)  
{
DeleteDC(pd.hDC);
AfxMessageBox( "字段太多，无法在一行内打印，请试用较大的纸，或横向打印。 ");
return   FALSE;
}

   
}

DOCINFO   di;
di.cbSize   =   sizeof(DOCINFO);
di.lpszDocName   =   "ListCtrl   Data   Printing ";  
di.lpszOutput   =   (LPTSTR)   NULL;  
di.lpszDatatype   =   (LPTSTR)   NULL;  
di.fwType   =   0;  
StartDoc(pd.hDC,   &di);
StartPage(pd.hDC);

//调整各列的宽度，以使各列在后面的打印输出时更均匀的打印在纸上。
int   space   =   (nHorRes-nXMargin*nCharWidth-nColX)   /   (nColCount   -1);
for(i   =1;   i {
ca[i].nPrintX   +=   i*space;
}

//输出列标题
for(i   =0;   i TextOut(pd.hDC,   ca[i].nPrintX,   nYMargin,  
ca[i].strColText,   strlen(ca[i].strColText));

int   nMaxLinePerPage   =   nVerRes/nCharHeight   -3;
int   nCurPage   =1;
//输出各列的数据
for(i   =0;   i {
for(int   j   =0;   j {
if(i+1-(nCurPage-1)*nMaxLinePerPage   >   nMaxLinePerPage)
{
//新的一页
EndPage(pd.hDC);
StartPage(pd.hDC);
nCurPage   ++;
}
CString   subitem   =   list.GetItemText(i,   ca[j].nSubItemIndex);
TextOut(pd.hDC,   ca[j].nPrintX,  
nYMargin+(i+1-(nCurPage-1)*nMaxLinePerPage)*nCharHeight,  
subitem,   strlen(subitem));
}
}

EndPage(pd.hDC);
EndDoc(pd.hDC);
//打印结束
DeleteDC(pd.hDC);
return   TRUE;
}