C / C++ / MFC

CBitmap bmpCap;
CBitmap *pBmpOld = NULL;
CWnd* pWnd = GetDlgItem(IDC_SUCN_CHART);
pWnd->GetWindowRect(&rect);
ScreenToClient(rect);
CDC* pdcScreen = pWnd->GetDC();
CDC memDC;
memDC.CreateCompatibleDC(pdcScreen);
bmpCap.CreateCompatibleBitmap(pdcScreen, rect.Width(), rect.Height());
pBmpOld = memDC.SelectObject(&bmpCap); 
pWnd->PrintClient(&memDC,PRF_NONCLIENT|PRF_CHILDREN);
/*
	Do something with it.
*/
memDC.SelectObject(pBmpOld);
pWnd->ReleaseDC(pdcScreen);
bmpCap.DeleteObject();
memDC.DeleteDC();

Larry Mills Sr wrote:

I checked out some DILL articles. Nowhere is it explained whether a DILL can contain it's own resources. Can someone explain whether your DILL can contain Dialogs; and if so how can this be provided for linkage in a program.?

Larry Mills Sr wrote:

Since I don't know C#, or use the #include <windows.h> (because I use MFC exclusively), the articles you provided are useless to me. Thanks anyway.

a.cpp(14) : error C2065: 'bitset' : undeclared identifier

// SieveOfErathostenes.cpp : main project file.

#include <bitset>
#include <iostream>
#include <ctime>

using namespace System;
using namespace std;

int main(array<System::String ^> ^args)
{
    const int N = 2000000;
    clock_t cstart = clock();

    std::bitset<N + 1> b;
    int count = 0;
    int i;
    for (i = 2; i <= N; i++)
        b.set(i);
    i = 2;

    while (i * i <= N)
    {
        if (b.test(i))
        {
            count++;
            int k = 2 * i;
            while (k <= N)
            {
                b.reset(k);
                k += i;
            }
        }
        i++;
    }

    while (i <= N)
    {
        if (b.test(i))  count++;
        i++;
    }

    clock_t cend = clock();
    double millis = 1000.0 * (cend - cstart) / CLOCKS_PER_SEC;

    cout << count << " primes \n" << millis << " milliseconds\n";

    return 0;
}

Sieve.h
#pragma once
#include <iostream>

int main(array<System::String ^> ^args);

jon_80 wrote:

C1010 - unexpected eof. Says it needs a header file, but I "forgot" what to include. Afiak the header file includes:

sawerr wrote:

We know that, WinMain is buried in the MFC Framework. OK but how can Windows call it?

sawerr wrote:

If i import a dll and although i do not use one of the imported function in that dll, OS can still call that function? Or OS can only call imported dll functions which are used by exe?? If the function doesn't import by exe, it is never be called?