Introduction To MFC

#include <afxwin.h>
#include <atlbase.h>
#include <afxtempl.h>

class CSampleWindow : public CFrameWnd {
public:
    CSampleWindow();
protected:
    int OnCreate(LPCREATESTRUCT lpCreateStruct);
    void OnClose();

    DECLARE_MESSAGE_MAP();
};

BEGIN_MESSAGE_MAP(CSampleWindow, CFrameWnd)
        ON_WM_CREATE()
        ON_WM_CLOSE()
END_MESSAGE_MAP()

CSampleWindow::COpenGLWindow() {
    Create(NULL, "Sample MFC Window", WS_OVERLAPPEDWINDOW, rectDefault);
}

int CSampleWindow::OnCreate(LPCREATESTRUCT lpCreateStruct) {
    if(CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1;

    ShowWindow(SW_SHOW);
    return 0;
}

void CSampleWindow::OnClose() {
    DestroyWindow();
}

BEGIN_MESSAGE_MAP(CSampleWindow, CFrameWnd)
        ON_WM_CREATE()
        ON_WM_CLOSE()
END_MESSAGE_MAP()

#include <afxwin.h>
#include <atlbase.h>
#include <afxtempl.h>

class CSampleWindow : public CFrameWnd {
public:
    CSampleWindow();
protected:
    int OnCreate(LPCREATESTRUCT lpCreateStruct);
    void OnClose();

    DECLARE_MESSAGE_MAP();
};

BEGIN_MESSAGE_MAP(CSampleWindow, CFrameWnd)
        ON_WM_CREATE()
        ON_WM_CLOSE()
END_MESSAGE_MAP()

CSampleWindow::COpenGLWindow() {
    Create(NULL, "Sample MFC Window", WS_OVERLAPPEDWINDOW, rectDefault);
}

int CSampleWindow::OnCreate(LPCREATESTRUCT lpCreateStruct) {
    if(CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1;

    ShowWindow(SW_SHOW);
    return 0;
}

void CSampleWindow::OnClose() {
    DestroyWindow();
}

/////////////////////////////////////////

class CSampleApp : public CWinApp {
public:
    virtual BOOL InitInstance();
};

BOOL CSampleApp::InitInstance() {
    m_pMainWnd = new CSampleWindow();
    return TRUE;
}

CSampleApp sampleApp;