高分求高分求“对话框打印”源码，大家帮我看看我的为什么不行？

[NothingRemained]

我建了一个基于对话框的程序，我想点击一个按钮然后就将对话框及其上面的所有东西都打印出来。。。

我的程序如下：可打印出来的结果成为很小的一块，我想这是由于MM_TEXT模式下
Each logical unit is converted to 1 device pixel的关系，然后我试着改了一些其它模式，调整了坐标点，可是，依然不能实现“所见既所得”的效果，
大家认为该怎么办？能给我一份相关源码吗？找了n多地方，可就是找不到怎么做。。，

CRect rect;
GetClientRect(&rect);


CPrintDialog dlgPrint(FALSE,PD_NOPAGENUMS,this);
if (!dlgPrint.GetDefaults ())
return FALSE;

CDC dc;
dc.Attach (dlgPrint.GetPrinterDC ());

DOCINFO di;
ZeroMemory(&di,sizeof(DOCINFO));
di.cbSize = sizeof(DOCINFO);

CPrintInfo pi;
pi.m_rectDraw .SetRect (0,0,rect.Width (),rect.Height ());

StartDoc(dc,&di);
StartPage(dc);

Print(&dc,PRF_OWNED | PRF_CLIENT | PRF_CHILDREN );


EndPage(dc);
EndDoc(dc);

DeleteDC(dc);

关键，怎么才能实现屏幕看到的跟打印机打出来的一样大小？

[cadinfo]

大小的设置在于设备映射方式的更改，我给你贴一段代码，也是csdn上一个朋友发的，没有具体看，你瞅瞅是否有用：
------------------------------------------------------------
AfxGetApp()->BeginWaitCursor();

UpdateData( true );
if(m_Method==0) //对角线法
{
Calculate( ) ;
DataSet( INPUT::m_column );
}
else// 方格法
CalculateRect();

mcbCalcStd->GetWindowText(tempstr);
Grade(tempstr);

CDC dc;
CPrintDialog printDlg(FALSE);
if(m_printDirect==1) //是否显示打印对话框
printDlg.GetDefaults();
else
if(printDlg.DoModal()==IDCANCEL)return; //显示对话框 ,Get printer settings from user

HDC hdcPrntDC=printDlg.GetPrinterDC();
ASSERT(hdcPrntDC);
dc.Attach(hdcPrntDC); // Attach a printer DC
dc.m_bPrinting = TRUE;

CString strTitle; // Get the application title
strTitle.LoadString(AFX_IDS_APP_TITLE);

DOCINFO di; // Initialise print document details
::ZeroMemory (&di, sizeof (DOCINFO));
di.cbSize = sizeof (DOCINFO);
di.lpszDocName = strTitle;

BOOL bPrintingOK = dc.StartDoc(&di); // Begin a new print job

// Get the printing extents and store in the m_rectDraw field of a CPrintInfo object
CPrintInfo Info;
CSize PrtSize(Info.m_rectDraw.right-Info.m_rectDraw.left,Info.m_rectDraw.bottom-Info.m_rectDraw.top );
Info.m_rectDraw.SetRect(0,0, dc.GetDeviceCaps(HORZSIZE), dc.GetDeviceCaps(VERTSIZE));

Info.m_pPD->m_pd.nMaxPage=1;

ASSERT(&dc);
ASSERT(&Info);

OnBeginPrinting(&dc, &Info); // Call your "Init printing" funtion

{
dc.StartPage(); // begin new page
Info.m_nCurPage = 1;

if(m_bPRT4Check== FALSE) // 正常打印
OnPrint(&dc, &Info, 1); // Call your "Print page" function
else// 打印检修数据
MyPrint4Check(&dc, &Info);

bPrintingOK = (dc.EndPage() > 0); // end page
}
OnEndPrinting(&dc, &Info); // Call your "Clean up" funtion

if (bPrintingOK)dc.EndDoc(); // end a print job
else dc.AbortDoc(); // abort job.
GlobalFree(dc.m_hDC);
dc.Detach(); // detach the printer DC

m_pMyEdit[0][0]->SetFocus();
m_pMyEdit[0][0]->SetSel((DWORD)0XFF00,TRUE);

// m_bSaveAfterPRT;

if(m_bPRT4Check==FALSE)
{
if(m_bAddAfterPrt && m_CertNo.GetLength())
{
StrNumAutoAdd(&m_CertNo);
UpdateData(FALSE);
}
}
AfxGetApp()->EndWaitCursor();

[NothingRemained]

原来是要设置模式。。，更新后的源码如下：

CPrintDialog dlgPrint(FALSE,PD_NOPAGENUMS,this);
if (!dlgPrint.GetDefaults ())
return FALSE;

CDC dc;
dc.Attach (dlgPrint.GetPrinterDC ());

DOCINFO di;
ZeroMemory(&di,sizeof(DOCINFO));
di.cbSize = sizeof(DOCINFO);

CPrintInfo pi;

StartDoc(dc,&di);
StartPage(dc);

dc.SetMapMode(MM_ANISOTROPIC);
CSize size = CSize(800, 600);
dc.SetWindowExt(size);

int xLogPixPerInch = dc.GetDeviceCaps(LOGPIXELSX);
int yLogPixPerInch = dc.GetDeviceCaps(LOGPIXELSY);


long xExt = (long)size.cx * xLogPixPerInch/96 ;
long yExt = (long)size.cy * yLogPixPerInch/96 ;
dc.SetViewportExt((int)xExt, (int)yExt);

Print(&dc,PRF_OWNED | PRF_CLIENT | PRF_CHILDREN );


EndPage(dc);
EndDoc(dc);

DeleteDC(dc);