WIN32窗口程序

// Win32.cpp : 定义应用程序的入口点。

//

#include "stdafx.h"

#include "Win32.h"

void TRACE(LPCTSTR lpszFmt, ...);//调试信息

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);//消息处理函数

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,

                     _In_opt_ HINSTANCE hPrevInstance,

                     _In_ LPTSTR    lpCmdLine,

                     _In_ int       nCmdShow)

{

    //定义窗口类

    TCHAR *ClassName = _T("WIN32窗口程序");

    WNDCLASS wndclass = {};

    wndclass.hbrBackground = (HBRUSH)COLOR_MENU;

    wndclass.lpfnWndProc = WindowProc;

    wndclass.lpszClassName = ClassName;

    wndclass.hInstance = hInstance;

    //注册窗口类

    RegisterClass(&wndclass);

    HWND hwnd = CreateWindow(

        ClassName,

        _T("第一个窗口"),

        WS_OVERLAPPEDWINDOW,

        ,

        ,

        ,

        ,

        NULL,

        NULL,

        hInstance,

        NULL

        );

    if (hwnd ==NULL)

    {

        return ;

    }

    //显示窗口

    ShowWindow(hwnd, SW_SHOW);

    //消息循环

    MSG msg;

    while (GetMessage(&msg, NULL, , ))

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    //TRACE(_T("%d  %s"), 1243, a);

    return ;

}

//调试信息输出

void TRACE(LPCTSTR lpszFmt, ...)

{

    va_list args;

    va_start(args, lpszFmt);

    int len = _vsctprintf(lpszFmt, args) + ;

    TCHAR *lpszBuf = (TCHAR*)_alloca(len*sizeof(TCHAR));//栈中分配, 不需要释放

    _vstprintf_s(lpszBuf, len, lpszFmt, args);

    va_end(args);

    OutputDebugString(lpszBuf);

}

//消息回调函数

LRESULT CALLBACK WindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)

{

    return DefWindowProc(hwnd, uMsg, wParam, lParam);

}