求用c++封装的窗口类，最简单的那种,该如何处理

求用c++封装的窗口类，最简单的那种
LRESULT CALLBACK MainProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);


int APIENTRY WinMain(HINSTANCE hInstance,
  HINSTANCE hPrevInstance,
  LPSTR lpCmdLine,
  int nCmdShow)
{
  // TODO: Place code here.

WNDCLASS wc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wc.hCursor = LoadCursor(NULL,IDC_ARROW);
wc.hIcon = NULL;
wc.hInstance = hInstance;
wc.lpfnWndProc = MainProc;
wc.lpszClassName = TEXT("Window");
wc.lpszMenuName = NULL;
wc.style = CS_HREDRAW | CS_VREDRAW;

RegisterClass(&wc);

HWND hwnd = CreateWindow(TEXT("Window"),"text",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
NULL,NULL,hInstance,NULL);

ShowWindow(hwnd,SW_SHOWNORMAL);

MSG msg;
while(GetMessage(&msg,NULL,0,0))
{
DispatchMessage(&msg);
}

return 0;
}



LRESULT CALLBACK MainProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_CLOSE:
{
DestroyWindow(hwnd);
}
break;

case WM_DESTROY:
{
PostQuitMessage(0);
}
break;
}
return DefWindowProc(hwnd,uMsg,wParam,lParam);

}

以上代码是我用API写的，最简单的只有一个窗口的代码，现在要把它用C++封装成一个窗口类，不要用MFC的那种，就自己封装的，求高手指教！
谢谢！

------解决方案--------------------

C/C++ code

//MyWnd.h
#pragma once

#include "windows.h"
class CMyWnd
{
public:
    CMyWnd();
    virtual ~CMyWnd();
    HWND CreateEx(HINSTANCE hInst,DWORD dwExStyle,LPCTSTR lpText,DWORD dwStyle,LPRECT lprcWnd,HWND hParent,int nMenuID,int nIconID);
    HWND CreateEx(DWORD dwStyle,int x,int y,int nWidth,int nHeight,HWND hParent);
    void Destroy();
    HWND GetWnd();
    BOOL Show(int nCmd);
protected:
    virtual BOOL PreProcessMsg(HWND hWnd,UINT nMsg,WPARAM wParam,LPARAM lParam,LRESULT *pResult);
    virtual LRESULT OnCreate(HWND hWnd);
    virtual BOOL OnDestroy();
    virtual BOOL OnCommand(int nCmdID);
    virtual BOOL OnClose();
protected:
    BOOL CheckClass(LPCTSTR lpClassName);
    static LRESULT CALLBACK WndProc(HWND hWnd,UINT nMsg,WPARAM wParam,LPARAM lParam);
public:
    HWND m_hWnd;
protected:
    HICON m_hIcon;
    HMENU m_hMenu;
    HINSTANCE m_hInstance;
};

------解决方案--------------------
为何不用WTL？

------解决方案--------------------

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