helloworld.cpp

c++从入门到精通

#include <afxwin.h>
#include "helloworld.h"

CMyApp myApp;

/////////////////////////////////////////////////////////////////////////
// CMyApp member functions

BOOL CMyApp::InitInstance ()
{
    m_pMainWnd = new CMainWindow;
    m_pMainWnd->ShowWindow (m_nCmdShow);
    m_pMainWnd->UpdateWindow ();
    return TRUE;
}

/////////////////////////////////////////////////////////////////////////
// CMainWindow message map and member functions

BEGIN_MESSAGE_MAP (CMainWindow, CFrameWnd)
    ON_WM_PAINT ()
END_MESSAGE_MAP ()

CMainWindow::CMainWindow ()
{
    Create (NULL, _T ("The Hello World Application"));
}

void CMainWindow::OnPaint ()
{
    CPaintDC dc (this);
    
    CRect rect;
    GetClientRect (&rect);
	dc.TextOut(rect.Width()/2-36,rect.Height()/2,"Hello World");
   
}