Print Preview Without MFC

1. CreateCompatibleBitmap
2. CreateCompatibleDC
3. GetDeviceCaps
4. GetTextExtent

void CDlgAneh::OnButton1() 
{
// TODO: Add your control notification handler code here
//
//
// Design and implementation cinoban@yahoo.com 
// 13 Jan 2000 15:14
//

CString strWords;

// This is a rectangle control
CWnd* pWnd = GetDlgItem(IDC_STATIC_PREVIEW); 

CDC* dc;
CDC memoriDC;
CBitmap memBMP;
CBitmap* pOldBMP;
CFont fnt;
CFont* pOldFnt;
CRect rect;
CRect rectMemory;
CSize zMetrix;

//
//
//
CPrintDialog pdlg(FALSE);
DOCINFO di;
CDC prnDC;

di.cbSize = sizeof(DOCINFO);
di.lpszDocName = "This string will appear in Printer
Queue";
di.lpszOutput = NULL;     
di.lpszDatatype = NULL;
di.fwType = 0;

//
// Get current printer setting
//
pdlg.GetDefaults();


//
dc = pWnd->GetDC();
pWnd->GetClientRect(&rect);

// DC printer???
if( !prnDC.Attach(pdlg.GetPrinterDC()) )
AfxMessageBox("Invalid Printer DC");
memoriDC.CreateCompatibleDC(&prnDC); // Create DC for
Preview

//
// Get the resolution of Screen and Current Default
Printer
//
int iPrnX = prnDC.GetDeviceCaps(HORZRES);
int iPrnY = prnDC.GetDeviceCaps(VERTRES);
int iMonX = dc->GetDeviceCaps(HORZRES); // Device
Target is Monitor
int iMonY = dc->GetDeviceCaps(VERTRES);


rectMemory.top = 0;
rectMemory.left = 0;
rectMemory.bottom = iPrnY;
rectMemory.right = iPrnX;

//
// Create a Memory Bitmap that is compatible with the
Printer DC
// then select or make the bitmap as current GDI
active object
//
memBMP.CreateCompatibleBitmap(&prnDC,
rectMemory.Width(), rectMemory.Height());
pOldBMP = memoriDC.SelectObject(&memBMP);

//
// Clear memory DC or in other words
// paint the bitmap with white colour and transparent
text
//
memoriDC.SetBkMode(TRANSPARENT);
memoriDC.SetTextColor(RGB(0, 0, 0));
memoriDC.PatBlt(0, 0, rectMemory.Width(),
rectMemory.Height(), WHITENESS);

//
// Prepare the font
//
int iPointz = 100;
fnt.CreatePointFont(iPointz, "OCR A", &memoriDC);
strWords.Format("This is line number    ");        //
Test string
pOldFnt = memoriDC.SelectObject(&fnt);
zMetrix = memoriDC.GetTextExtent(strWords);
int iPos = 0;

//
// Write string or Paint something
//
int iMaksimal = 0;
int iLineHeight = 1;
int iLoop;
CString strPuncak;

//
// Calculate how many lines we could fit
//
for(iLoop = 1; iLoop < 100; iLoop++)
{
if( ((zMetrix.cy+iLineHeight)*iLoop) < iPrnY )
iMaksimal++;
}

strPuncak.Format("Maximum Amount of line(s) for %d
points are %d lines", iPointz, iMaksimal);

//
//
//
for(iLoop = 0; iLoop < iMaksimal; iLoop++)
{
strWords.Format("This is line %d", iLoop);
memoriDC.TextOut(0, iLoop*(zMetrix.cy+iLineHeight),
strWords);
}

//
// Reseting font
//
memoriDC.SelectObject(pOldFnt);

//
// Calculate ratio
//
float fXRatio = (float) iMonX/iPrnX;
float fYRatio = (float) iMonY/iPrnY;


//  iLebar = Width
//  iTinggi = Height
//  iXPosisiPreview = horisontal location of preview
//  iYPosisiPreview = vertical location of preview
//
int iLebar = rect.Width()*fXRatio;
int iTinggi = rect.Height()*fYRatio;
int iXPosisiPreview = (rect.Width() - iLebar)/2;
int iYPosisiPreview = (rect.Height() - iTinggi)/2;
CPen pen(PS_SOLID, 2, RGB(255, 0, 0));
CPen* pOldPen;

//
// Create an outline
// 
pOldPen = dc->SelectObject(&pen);
dc->Rectangle(iXPosisiPreview, iYPosisiPreview ,
iXPosisiPreview + iLebar + 2 , iYPosisiPreview +
iTinggi + 2);
dc->SelectObject(pOldPen);

//
// Put in the box
//
dc->StretchBlt(iXPosisiPreview , iYPosisiPreview ,
iLebar, iTinggi,
&memoriDC, 0, 0, rectMemory.Width(),
rectMemory.Height(), SRCCOPY);

//
// Cleaning Up
//
fnt.DeleteObject();
memoriDC.SelectObject(pOldBMP);
memoriDC.DeleteDC();
memBMP.DeleteObject();
prnDC.Detach();

//
pWnd->ReleaseDC(dc);
}