C / C++ / MFC

trioum wrote:

lf.lfHeight giving the arbitrary wrong negative values

lfHeight = -MulDiv(PointSize, GetDeviceCaps(hDC, LOGPIXELSY), 72);

int GetFontPointSize(int nHeight)
{
    HDC hdc = ::CreateDC(_T("DISPLAY"), NULL, NULL, NULL);
    ASSERT(hdc);
    int cyPixelsPerInch = ::GetDeviceCaps(hdc, LOGPIXELSY);
    ::DeleteDC(hdc);
    int nPointSize = MulDiv(nHeight, 72, cyPixelsPerInch);
    if (nPointSize < 0)
        nPointSize = -nPointSize;
    return nPointSize;
}

int GetFontHeight(int nPointSize)
{
	HDC hdc = ::CreateDC(_T("DISPLAY"), NULL, NULL, NULL);
	ASSERT(hdc);
	int cyPixelsPerInch = ::GetDeviceCaps(hdc, LOGPIXELSY);
	::DeleteDC(hdc);
	int nHeight = -MulDiv(nPointSize, cyPixelsPerInch, 72);
	return nHeight;
}

josip cagalj wrote:

Also, forget to mention I'm on HP.

      toAscii[0] = 1;
00401DED   mov         eax,[toAscii (004167c0)] // copy 4 bytes from the memory pointer by 004167c0
                                                // which is actually the content of first 4 bytes of the array
//
00401DF2   mov         byte ptr [eax],1         // now set 1 to the memory pointed by eax. 
                                                // which will be an invalid memory

      toAscii[0] = 1;
00401DED   mov         byte ptr [toAscii (004167c0)],1