C语言+win32api写窗体应用程序

#include <windows.h>#include<tchar.h>LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);int WINAPI _tWinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR szCmdLine, int nCmdShow){    WNDCLASS wc;    wc.style = CS_HREDRAW | CS_VREDRAW;    wc.lpfnWndProc = WindowProc;    wc.cbClsExtra = 0;    wc.cbWndExtra = 0;    wc.hInstance = hInstance;    wc.hIcon = NULL;    wc.hCursor = LoadCursor(NULL,IDC_ARROW);    wc.hbrBackground = (HBRUSH)COLOR_WINDOW;//(HBRUSH)GetStockObject();    wc.lpszMenuName = NULL;    wc.lpszClassName = _T("MyWindowClass");    if (!RegisterClass(&wc))    {        MessageBox (NULL, _T("无法注册窗口类"), _T("错误"), MB_OK);        return 0 ;    }    HWND newWindow = CreateWindow(                                        _T("MyWindowClass"),                                         _T("我的第一个winapi程序"),                                         WS_OVERLAPPEDWINDOW,                                         0,                                         0,                                         CW_USEDEFAULT,                                         CW_USEDEFAULT,                                         NULL,                                         NULL,                                         hInstance,                                         NULL                                    );    if (NULL == newWindow)    {        MessageBox (NULL, _T("无法创建窗体"), _T("错误"), MB_OK);        return 0;    }    ShowWindow(newWindow, nCmdShow);    UpdateWindow(newWindow);    MSG msg;    while(GetMessage(&msg, NULL, 0, 0))    {        TranslateMessage(&msg);        DispatchMessage(&msg);    }}    LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)    {        switch (uMsg)        {            case WM_DESTROY:            {                PostQuitMessage(0);                break;            }            default :                return DefWindowProc(hwnd, uMsg, wParam, lParam);        }        return 0;    }