<div>
pWnd-&gt;GetWindowRect(&amp;rect); &nbsp; &nbsp;//NOTE THE &amp;
</div>

<div>
hi AndyAinScow, 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Now I have modified code like 
&nbsp; &nbsp; &nbsp;pWnd-&gt;GetWindowRect(&amp;rect); 
 
&nbsp; &nbsp; &nbsp; &nbsp; But same Run-Time error is coming 
 
&nbsp; &nbsp; &nbsp;Please help me to clear my doubts. 
 
&nbsp; &nbsp; &nbsp;With regards. 
&nbsp; &nbsp; &nbsp;-Mahesh
</div>

<div>
Good point from jimbucci - this also means the following line should fail 
WriteWindowToDIB(&quot;.\\test.bmp&quot;, pWnd); 
Do you have the link to the original question you got this code from?
</div>

<div>
The code snippet is also missing a 
delete pWnd; 
to stop memory leaks.
</div>

<div>
CWnd *pWnd=new CWnd; 
pWnd-&gt;GetWindowRect(rect); 
 
This is wrong. CWnd object exists, but window itself is not created. To create window you need to call CWnd::Create function, only after this you can call GetWindowRect. However, I don't beleive you need new CWnd object here. Try this: 
 
void CCheckView::OnFileSave() 
{ 
&nbsp; &nbsp; &nbsp;// TODO: Add your command handler code here 
&nbsp; &nbsp; &nbsp;CDC * pdcMemory = new CDC; 
&nbsp; &nbsp; &nbsp;CRect &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;rect; 
&nbsp; &nbsp; &nbsp;GetWindowRect(rect); 
&nbsp; &nbsp; &nbsp;CBitmap * pBitmap = new CBitmap; 
&nbsp; &nbsp; &nbsp;if (pdcMemory-&gt;GetSafeHdc() == NULL) { 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CClientDC dc(this); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; OnPrepareDC(&amp;dc); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pBitmap-&gt;CreateCompatibleBitmap(&amp;dc, 300, 300); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pdcMemory-&gt;CreateCompatibleDC(&amp;dc); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pdcMemory-&gt;SelectObject(pBitmap); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pdcMemory-&gt;FillSolidRect(0, 0, 300,300,RGB(255, 255, 255)); // manully paint it white 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; OnDraw(pdcMemory); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WriteWindowToDIB(&quot;.\\test.bmp&quot;, this); 
&nbsp; &nbsp; &nbsp;} 
&nbsp; &nbsp; &nbsp;delete pdcMemory; 
&nbsp; &nbsp; &nbsp;delete pBitmap; 
} 

</div>

<div>
hi all, 
 
&nbsp; &nbsp;Thanks for everybody. Now it is working fine. 
 
&nbsp; &nbsp;-Mahesh 
 
I have pasted my code below. It may helps to others in future. 
void XYchartView::OnFileSave() 
{ 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your command handler code here 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UpdateData(); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;char strFilter[] = { &quot;BMP Files (*.bmp)|*.bmp||&quot; }; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CFileDialog FileDlg(FALSE, &quot;.bmp&quot;, NULL, 0, strFilter); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if( FileDlg.DoModal() == IDOK ) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{ 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; char fileName[100]; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; strcpy(fileName,FileDlg.GetPathName()); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int i=0; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; while(fileName[i] != '\0') 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; { 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;if(fileName[i] == '\\') 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fileName[i] = '/'; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;++i; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WriteWindowToDIB(fileName, this); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;else 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return; 
 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UpdateData(FALSE); 
} 
 
 
BOOL XYchartView::WriteWindowToDIB( LPTSTR szFile, CWnd *pWnd ) 
{ 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CBitmap &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bitmap; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CWindowDC &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dc(pWnd); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CDC &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;memDC; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CRect &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rect; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;memDC.CreateCompatibleDC(&amp;dc); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pWnd-&gt;GetWindowRect(rect); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bitmap.CreateCompatibleBitmap(&amp;dc, rect.Width(),rect.Height() ); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CBitmap* pOldBitmap = memDC.SelectObject(&amp;bitmap); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;memDC.BitBlt(0, 0, rect.Width(),rect.Height(), &amp;dc, 0, 0, SRCCOPY); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Create logical palette if device support a palette 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CPalette pal; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if( dc.GetDeviceCaps(RASTERCAPS) &amp;&nbsp;RC_PALETTE ) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{ 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UINT nSize = sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * 256); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;LOGPALETTE *pLP = (LOGPALETTE *) new BYTE[nSize]; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pLP-&gt;palVersion = 0x300; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pLP-&gt;palNumEntries = 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GetSystemPaletteEntries( dc, 0, 255, pLP-&gt;palPalEntry ); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Create the palette 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pal.CreatePalette( pLP ); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delete[] pLP; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;memDC.SelectObject(pOldBitmap); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Convert the bitmap to a DIB 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HANDLE hDIB = DDBToDIB( bitmap, BI_RGB, &amp;pal ); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if( hDIB == NULL ) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return FALSE; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Write it to file 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WriteDIB( szFile, hDIB ); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Free the memory allocated by DDBToDIB for the DIB 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GlobalFree( hDIB ); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return TRUE; 
} 
 
 
 
// WriteDIB &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- Writes a DIB to file 
// Returns &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- TRUE on success 
// szFile &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- Name of file to write to 
// hDIB &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- Handle of the DIB 
BOOL XYchartView::WriteDIB( LPTSTR szFile, HANDLE hDIB) 
{ 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BITMAPFILEHEADER &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hdr; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;LPBITMAPINFOHEADER &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lpbi; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (!hDIB) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return FALSE; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CFile file; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if( !file.Open( szFile, CFile::modeWrite|CFile::modeCreate) ) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return FALSE; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lpbi = (LPBITMAPINFOHEADER)hDIB; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int nColors = 1 &lt;&lt;&nbsp;lpbi-&gt;biBitCount; 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Fill in the fields of the file header 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hdr.bfType &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= ((WORD) ('M' &lt;&lt;&nbsp;8) | 'B'); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// is always &quot;BM&quot; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hdr.bfSize &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= GlobalSize (hDIB) + sizeof( hdr ); 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hdr.bfReserved1 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 0; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hdr.bfReserved2 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 0; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;hdr.bfOffBits &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= (DWORD) (sizeof( hdr ) + lpbi-&gt;biSize + 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nColors * sizeof(RGBQUAD)); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Write the file header 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;file.Write( &amp;hdr, sizeof(hdr) ); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// Write the DIB header and the bits 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;file.Write( lpbi, GlobalSize(hDIB) ); 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return TRUE; 
} 
 
/*///////////////////////////////////////////////////////////////// 
Function Name :HANDLE DDBToDIB(CBitmap &amp;bitmap, 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;DWORD dwCompression, 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;CPalette *pPal) 
Parameters: 
&nbsp; CBitmap &amp;bitmap : Compatible Device Dependent Bitmap 
&nbsp; DWORD dwCompression : Compression format for Bitmap must not be 
&nbsp; BI_BITFIELDS in this case. 
&nbsp; CPalette *pPal : Pointer to Palette. If this is NULL, the 
&nbsp; default system palette will be used. 
 
/////////////////////////////////////////////////////////////////*/ 
HANDLE XYchartView::DDBToDIB(CBitmap &amp;bitmap, DWORD dwCompression, CPalette *pPal) 
{ 
 
&nbsp; BITMAP &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;bm; 
&nbsp; BITMAPINFOHEADER &nbsp; &nbsp;bi; 
&nbsp; LPBITMAPINFOHEADER &nbsp;lpbi; 
&nbsp; DWORD &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dwLen; 
&nbsp; HANDLE &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;hDIB; 
&nbsp; HANDLE &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;handle; 
&nbsp; HDC &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hDC; 
&nbsp; HPALETTE &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;hPal; 
 
 
&nbsp; ASSERT( bitmap.GetSafeHandle() ); 
 
&nbsp; // The function has no arg for bitfields 
&nbsp; if( dwCompression == BI_BITFIELDS ) 
&nbsp; &nbsp; return NULL; 
 
&nbsp; // If a palette has not been supplied, use default palette 
&nbsp; hPal = (HPALETTE) pPal-&gt;GetSafeHandle(); 
&nbsp; if (hPal==NULL) 
&nbsp; &nbsp; hPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE); 
 
&nbsp; // Get bitmap information 
&nbsp; bitmap.GetObject(sizeof(bm),(LPSTR)&amp;bm); 
 
&nbsp; // Initialize the bitmap infoheader 
&nbsp; bi.biSize &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= sizeof(BITMAPINFOHEADER); 
&nbsp; bi.biWidth &nbsp; &nbsp; &nbsp; &nbsp; = bm.bmWidth; 
&nbsp; bi.biHeight &nbsp; &nbsp; &nbsp; &nbsp;= bm.bmHeight; 
&nbsp; bi.biPlanes &nbsp; &nbsp; &nbsp; &nbsp;= 1; 
&nbsp; bi.biBitCount &nbsp; &nbsp; &nbsp;= bm.bmPlanes * bm.bmBitsPixel; 
&nbsp; &nbsp; //bm.bmPlanes &nbsp; &nbsp;* bm.bmBitsPixel; 
&nbsp; bi.biCompression &nbsp; = dwCompression; 
&nbsp; bi.biSizeImage &nbsp; &nbsp; = 0; 
&nbsp; bi.biXPelsPerMeter = 0; 
&nbsp; bi.biYPelsPerMeter = 0; 
&nbsp; bi.biClrUsed &nbsp; &nbsp; &nbsp; = 0; 
&nbsp; bi.biClrImportant &nbsp;= 0; 
 
&nbsp; // Compute the size of the infoheader and the color table 
&nbsp; int nColors = (1 &lt;&lt;&nbsp;bi.biBitCount); 
&nbsp; if( nColors &gt;&nbsp;256 ) 
&nbsp; &nbsp; nColors = 0; 
&nbsp; dwLen &nbsp;= bi.biSize + nColors * sizeof(RGBQUAD); 
 
&nbsp; // We need a device context to get the DIB from 
&nbsp; hDC = ::GetDC(NULL); 
&nbsp; hPal = SelectPalette(hDC,hPal,FALSE); 
&nbsp; RealizePalette(hDC); 
 
&nbsp; // Allocate enough memory to hold bitmap infoheader and 
&nbsp; // color table 
&nbsp; hDIB = GlobalAlloc(GMEM_FIXED,dwLen); 
 
&nbsp; if (!hDIB){ 
&nbsp; &nbsp; SelectPalette(hDC,hPal,FALSE); 
&nbsp; &nbsp; ::ReleaseDC(NULL,hDC); 
&nbsp; &nbsp; return NULL; 
&nbsp; } 
 
&nbsp; lpbi = (LPBITMAPINFOHEADER)hDIB; 
 
&nbsp; *lpbi = bi; 
 
&nbsp; // Call GetDIBits with a NULL lpBits param, so the device 
&nbsp; // driver will calculate the biSizeImage field 
&nbsp; GetDIBits(hDC, (HBITMAP)bitmap.GetSafeHandle(), 0L, 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(DWORD)bi.biHeight, 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(LPBYTE)NULL, (LPBITMAPINFO)lpbi, 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(DWORD)DIB_RGB_COLORS); 
 
&nbsp; bi = *lpbi; 
 
&nbsp; // If the driver did not fill in the biSizeImage field, then 
&nbsp; // compute it 
&nbsp; // Each scan line of the image is aligned on a DWORD (32bit) 
&nbsp; // boundary 
&nbsp; if (bi.biSizeImage == 0){ 
&nbsp; &nbsp; bi.biSizeImage = ((((bi.biWidth * bi.biBitCount) + 31) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &amp;&nbsp;~31) / 8) * bi.biHeight; 
 
&nbsp; &nbsp; // If a compression scheme is used, the result may in fact 
&nbsp; &nbsp; // be larger 
&nbsp; &nbsp; // Increase the size to account for this. 
&nbsp; &nbsp; if (dwCompression != BI_RGB) 
&nbsp; &nbsp; &nbsp; bi.biSizeImage = (bi.biSizeImage * 3) / 2; 
&nbsp; } 
 
&nbsp; // Realloc the buffer so that it can hold all the bits 
&nbsp; dwLen += bi.biSizeImage; 
&nbsp; if (handle = GlobalReAlloc(hDIB, dwLen, GMEM_MOVEABLE)) 
&nbsp; &nbsp; hDIB = handle; 
&nbsp; else{ 
&nbsp; &nbsp; GlobalFree(hDIB); 
 
&nbsp; &nbsp; // Reselect the original palette 
&nbsp; &nbsp; SelectPalette(hDC,hPal,FALSE); 
&nbsp; &nbsp; ::ReleaseDC(NULL,hDC); 
&nbsp; &nbsp; return NULL; 
&nbsp; } 
 
&nbsp; // Get the bitmap bits 
&nbsp; lpbi = (LPBITMAPINFOHEADER)hDIB; 
 
&nbsp; // FINALLY get the DIB 
&nbsp; BOOL bGotBits = GetDIBits( hDC, (HBITMAP)bitmap.GetSafeHandle(), 
&nbsp; &nbsp; &nbsp; &nbsp; 0L, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;// Start scan line 
&nbsp; &nbsp; &nbsp; &nbsp; (DWORD)bi.biHeight, &nbsp; &nbsp; &nbsp; &nbsp;// # of scan lines 
&nbsp; &nbsp; &nbsp; &nbsp; (LPBYTE)lpbi &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // address for bitmap bits 
&nbsp; &nbsp; &nbsp; &nbsp; + (bi.biSize + nColors * sizeof(RGBQUAD)), 
&nbsp; &nbsp; &nbsp; &nbsp; (LPBITMAPINFO)lpbi, &nbsp; &nbsp; &nbsp; &nbsp;// address of bitmapinfo 
&nbsp; &nbsp; &nbsp; &nbsp; (DWORD)DIB_RGB_COLORS); &nbsp; &nbsp;// Use RGB for color table 
 
&nbsp; if( !bGotBits ) 
&nbsp; { 
&nbsp; &nbsp; GlobalFree(hDIB); 
 
&nbsp; &nbsp; SelectPalette(hDC,hPal,FALSE); 
&nbsp; &nbsp; ::ReleaseDC(NULL,hDC); 
&nbsp; &nbsp; return NULL; 
&nbsp; } 
 
&nbsp; SelectPalette(hDC,hPal,FALSE); 
&nbsp; ::ReleaseDC(NULL,hDC); 
 
&nbsp; return hDIB; 
 
//End of the function 
} 
 

</div>

<div>
I tried your code (exactly as posted) and the file is created, and 
the bitmap has the proper dimensions, but it is blank (all pixels white). 
Do you have an idea what I did wrong? 
 
Tullhead
</div>

<div>
<div class="content wysiwyg-content">
Dear Friends, 
 
&nbsp; &nbsp; I got following code from expert-exchange.com for convert displayed drawing from OnDraw(CDC *pDC) to BMP file 
 
void CCheckView::OnFileSave() 
{ 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your command handler code here 
&nbsp; &nbsp; &nbsp;CDC * pdcMemory = new CDC; 
&nbsp; &nbsp; &nbsp;CWnd *pWnd=new CWnd; 
&nbsp; &nbsp; &nbsp;CRect &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;rect; 
&nbsp; &nbsp; &nbsp;pWnd-&gt;GetWindowRect(rect); 
&nbsp; &nbsp; &nbsp;CBitmap * pBitmap = new CBitmap; 
&nbsp; &nbsp; &nbsp;if (pdcMemory-&gt;GetSafeHdc() == NULL) { 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CClientDC dc(this); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; OnPrepareDC(&amp;dc); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pBitmap-&gt;CreateCompatibleBitmap(&amp;dc, 300, 300); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pdcMemory-&gt;CreateCompatibleDC(&amp;dc); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pdcMemory-&gt;SelectObject(pBitmap); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pdcMemory-&gt;FillSolidRect(0, 0, 300,300,RGB(255, 255, 255)); // manully paint it white 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; OnDraw(pdcMemory); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WriteWindowToDIB(&quot;.\\test.bmp&quot;, pWnd); 
&nbsp; &nbsp; &nbsp;} 
&nbsp; &nbsp; &nbsp;delete pdcMemory; 
&nbsp; &nbsp; &nbsp;delete pBitmap; 
} 
 
&nbsp; &nbsp; In the above code, while running pWnd-&gt;GetWindowRect(rect); giving run-time error. 
&nbsp; 
&nbsp; &nbsp; Please help me to clear my doubts. 
&nbsp; &nbsp; With warm regards 
&nbsp; &nbsp; -Mahesh
</div>
</div>

Dear Friends,

    I got following code from expert-exchange.com for convert displayed drawing from OnDraw(CDC *pDC) to BMP file

void CCheckView::OnFileSave() 
{
	// TODO: Add your command handler code here
     CDC * pdcMemory = new CDC;
     CWnd *pWnd=new CWnd;
     CRect          rect;
     pWnd->GetWindowRect(rect);
     CBitmap * pBitmap = new CBitmap;
     if (pdcMemory->GetSafeHdc() == NULL) {
          CClientDC dc(this);
          OnPrepareDC(&dc);
          pBitmap->CreateCompatibleBitmap(&dc, 300, 300);
          pdcMemory->CreateCompatibleDC(&dc);
          pdcMemory->SelectObject(pBitmap);
          pdcMemory->FillSolidRect(0, 0, 300,300,RGB(255, 255, 255)); // manully paint it white
          OnDraw(pdcMemory);
          WriteWindowToDIB(".\\test.bmp", pWnd);
     }
     delete pdcMemory;
     delete pBitmap;
}

    In the above code, while running pWnd->GetWindowRect(rect); giving run-time error.
 
    Please help me to clear my doubts.
    With warm regards
    -Mahesh

Convert drawing from OnDraw(CDC *pDC) to BMP file

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