::SetPixelV help please

[posty68]

Hi
Why when i use this code is my bitmap the right size but im trying to set just one pixel a certain color
but with this code the whole line gets turned into that colour
always my y co ordinate ??

Any ideas ?

say the RGB values are 128,128,128 instead of just getting a color dot at position x,y
i get a colored line at position x but all the way down line y ??

	CPen Pen1;
	LOGPEN lp;
	lp.lopnStyle = PS_SOLID;
	lp.lopnWidth.x = 0;
	lp.lopnColor = RGB(0,0,0);
	Pen1.CreatePenIndirect(&lp);

	// Create a brush
	CBrush brush1;
	brush1.CreateSolidBrush(RGB(0,0,0));

	CBrush* pOldBrush = m_pDCNew->SelectObject(&brush1);
	CPen* pOldPen = m_pDCNew->SelectObject(&Pen1);

	// declare a AFPDibSection
	AFPDibSection dib(nWidthInPixels, nHeightInPixels);

	// call the Rectangle function and draw a rectangle for the size of the bitmap in the AFPDibSection
	::Rectangle(dib.getDC(), 0, 0, nWidthInPixels, nHeightInPixels);

	int x = 0, y = 0;

	// The amount of bits allowed in the line is as long as the width of the bitmap
	int bits_per_line = nWidthInPixels;


//******************** End *************************************************//

		for (int n = 0; n < strRawData.GetLength(); n += bits_per_line)	// loop through all the data
		{
			for (int j = 0; j <= bits_per_line; j++) // loop through and get values from array
			{
				CString strRDRed, strRDGreen, strRDBlue; 
				int nrdRed, nrdGreen, nrdBlue;

				// break up rawdata string into 2 chars
				CString strTwoChars = strRawData.Mid(nStartingPosition,nTwoChars);
				int nValue = HexToDec(strTwoChars);
				CString strRGBColor = colorTable.GetAt(nValue);

				// pull out colors
				strRDRed   = strRGBColor.Mid(0,3);
				strRDGreen = strRGBColor.Mid(3,3);
				strRDBlue  = strRGBColor.Mid(6,3);

				nrdRed   = _ttoi(strRDRed);
				nrdGreen = _ttoi(strRDGreen);
				nrdBlue  = _ttoi(strRDBlue);

				COLORREF clr = RGB(nrdRed, nrdGreen, nrdBlue);

				// need to set pixel color
				::SetPixelV(dib.getDC(), x, y , clr);

				nStartingPosition += nTwoChars;

				x++;
			}
			nStartingPosition = 0;
			x = 0;
			y++;
		}

Thanks

P

[Marc G]

Use the debugger to step through your code and check the values of strTwoChars and strRGBColor in the debugger.