C / C++ / MFC

std::ofstream f(sPath.GetBuffer(0), std::ios::binary);

#include <iostream>
#include <fstream>

int main(int, char**)
{
   std::ofstream f("a.a", std::ios::binary);
   if (!f.is_open())
   {
      std::cerr << "File open failed" << std::endl;
   }
   else
   {
      f << "Hello";
      f.close();
   }
}

josip cagalj wrote:

I also include 'iostream.h'

m_slider1.GetThumbRect(&rect1);
m_slider2.GetThumbRect(&rect2);

m_slider1.ClientToScreen(&rect1);
m_slider2.ClientToScreen(&rect2);

ScreenToClient(&rect1);
ScreenToClient(&rect2);

<span style="color:blue">int</span> x1 = rect1.left + ((rect1.right - rect1.left) / 2);
<span style="color:blue">int</span> y1 = rect1.bottom;
<span style="color:blue">int</span> x2 = x1;
<span style="color:blue">int</span> y2 = rect2.top;

CDC* pDC = GetDC();

CPen pen(PS_SOLID, 1, RGB(0, 0, 0));
pDC->SelectObject(&pen);

pDC->MoveTo(x1, y1);
pDC->LineTo(x2, y2);

ReleaseDC(pDC);

1. How are you calling CHttpFile::Read?
2. Have you tried single-stepping through the CHttpFile::Read function (you will be able to if you've got the MFC source installed) to see what underlying function causes the exception to be thrown?

unsigned __int64 totalRead(0);
while (1)
{
   const DWORD toRead = 1<<20;
   const DWORD nRead = httpFile->Read(pData + totalRead, toRead);
   totalRead += nRead;
   if (nRead != dwRemoteSize) break;
}
_ASSERTE(totalRead == dwRemoteSize);