HelloWin程序

新建一个空白project,

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在Project中,新建一个HelloWin.cpp文件：

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在HelloWin中填入如下内容：

/*−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
HELLOWIN.C −− Displays "Hello, Windows 98!" in client area
(c) Charles Petzold, 1998
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−*/
#include <windows.h>
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
    PSTR szCmdLine, int iCmdShow)
{
    static TCHAR szAppName[] = TEXT("HelloWin");
    HWND hwnd;
    MSG msg;
    WNDCLASS wndclass;
    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc = WndProc;
    wndclass.cbClsExtra = 0;
    wndclass.cbWndExtra = 0;
    wndclass.hInstance = hInstance;
    wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName = NULL;
    wndclass.lpszClassName = szAppName;
    if (!RegisterClass(&wndclass))
    {
        MessageBox(NULL, TEXT("This program requires Windows NT!"),
            szAppName, MB_ICONERROR);
        return 0;
    }
    hwnd = CreateWindow(szAppName, // window class name
        TEXT("The Hello Program"), // window caption
        WS_OVERLAPPEDWINDOW, // window style
        CW_USEDEFAULT, // initial x position
        CW_USEDEFAULT, // initial y position
        CW_USEDEFAULT, // initial x size
        CW_USEDEFAULT, // initial y size
        NULL, // parent window handle
        NULL, // window menu handle
        hInstance, // program instance handle
        NULL); // creation parameters
    ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd);
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    RECT rect;
    switch (message)
    {
    case WM_CREATE:
        //PlaySound(TEXT("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC);
        return 0;
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        GetClientRect(hwnd, &rect);
        DrawText(hdc, TEXT("Hello, Windows 98!"), -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
        EndPaint(hwnd, &ps);
        return 0;
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

按F5编译运行：

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这段程序来自Charles Petzold的Programming Windows 5th Edition一书。
20年前书中的例子，现在拿过来直接能运行，不得不佩服Windows程序的向前兼容，做的有多么的好！

如果希望窗口打开的时候，听到书中例子的声音。把下面这行的注释去掉：

PlaySound(TEXT("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC);

然后， 选中HelloWin Properties...

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在linker中加入winmm.lib

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从这个网址下载hellowin.wav,
https://resources.oreilly.com/examples/9781572319950/tree/master/cd_contents/Chap03/HelloWin

下载后放在HelloWin目录下：

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再次按F5编译运行，就可以听到声音了。