win32 Application 模板 建立 MFC程序

#include <Afxwin.h>
class CMyApp:public CWinApp
{
 BOOL InitInstance();
};
class CMyWindow:public CFrameWnd
{
//  public:
//   CMyWindow();
//  ~CMyWindow();
 //afx_msg void OnPaint();
public:
 void OnPaint();
 afx_msg void OnNcPaint( );
 DECLARE_MESSAGE_MAP();
};
#include "hello.h"
CMyApp theApp;
BEGIN_MESSAGE_MAP(CMyWindow,CFrameWnd)
 ON_WM_PAINT()
 ON_WM_NCPAINT()
END_MESSAGE_MAP()
CMyApp::InitInstance()
{
 CMyWindow *MainWnd = new CMyWindow;
 MainWnd->Create(NULL,"llsls");
 m_pMainWnd = MainWnd;
    m_pMainWnd->ShowWindow(m_nCmdShow);
 m_pMainWnd->UpdateWindow();
// ::MessageBox(0,"Hello","Simple MFC",MB_OK);
 return true;
}
void CMyWindow::OnPaint()
{
 CClientDC pDC(this);

 CRect rc;
 GetClientRect(&rc);
 PAINTSTRUCT ps;
    //BeginPaint(&ps);
 //pDC.SetBkColor(TRANSPARENT);
 //pDC.Rectangle(CRect(0, 0, 100, 100));
 
 pDC.DrawText(_T("hello,world"),&rc,DT_SINGLELINE   | DT_CENTER | DT_VCENTER );
// EndPaint(&ps);
// ReleaseDC(pDC);
 CFrameWnd::OnPaint();

}
void CMyWindow::OnNcPaint()
{
//  CDC *pDC = GetWindowDC();
//  CRect rc;
// // GetClientRect(&rc);
//  pDC->Rectangle(CRect(0, 0, 100, 100));
//  ReleaseDC(pDC);
 //dc.DrawText(_T("hello,world"),&rc,DT_SINGLELINE   | DT_CENTER | DT_VCENTER );
 
 
 
}
// CMyWindow::CMyWindow()
// {
//
//
// }