使用ATL::CWindowImpl实现Win32窗口

开发大型GUI界面程序MFC当仁不让，但如果是开发图形应用程序，并不需要大规模界面控件，没有必要链接庞大的MFC库，直接使用platform sdk会很麻烦，这时ATL中的关于Windows的封装就是最好的选择

#include <atlbase.h>#include <atlwin.h>class CMyWindow: public CWindowImpl<CMyWindow, CWindow, CWinTraits<WS_OVERLAPPEDWINDOW, 0> >{public:DECLARE_WND_CLASS(_T("CMyWindow")) BEGIN_MSG_MAP(CMyWindow)MESSAGE_HANDLER(WM_PAINT, OnPaint)END_MSG_MAP()LRESULT OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL & bHandled){PAINTSTRUCT ps;::BeginPaint(m_hWnd, &ps);::EndPaint(m_hWnd, &ps);bHandled = TRUE;return 0;}void OnFinalMessage(HWND hwnd){::PostQuitMessage(0);}};int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow){CMyWindow myWnd;myWnd.Create(NULL, CMyWindow::rcDefault, _T("Hello, world"));myWnd.ShowWindow(nCmdShow);myWnd.UpdateWindow();MSG msg;msg.message = ~(UINT)WM_QUIT;while(msg.message != WM_QUIT){if(::GetMessage(&msg, NULL, 0, 0)){TranslateMessage(&msg);DispatchMessage(&msg);}}return (int)msg.wParam;}