visual 绘制五角星

可以使用以下代码在 Visual Studio 中绘制五角星：

#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("FiveStar");
    HWND hwnd;
    MSG msg;
    WNDCLASS wndclass;

    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc = WndProc;
    wndclass.cbClsExtra = ;
    wndclass.cbWndExtra = ;
    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 ;
    }

    hwnd = CreateWindow(szAppName, TEXT("FiveStar"),
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd);

    while (GetMessage(&msg, NULL, , ))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static POINT aptStar[5] = { {,-100},{95,-31},{-59,-81},{59,-81},{-95,-31} };
    static BOOL fAlternate = FALSE;
    HDC hdc;
    PAINTSTRUCT ps;
    int i;
    switch (message)
    {
    case WM_CREATE:
        return ;

    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        SetPolyFillMode(hdc, fAlternate ? WINDING : ALTERNATE);
        Polygon(hdc, aptStar, 5);
        EndPaint(hwnd, &ps);
        return ;

    case WM_KEYDOWN:
        if (wParam == VK_SPACE)
        {
            fAlternate = !fAlternate;
            InvalidateRect(hwnd, NULL, TRUE);
        }
        return ;

    case WM_DESTROY:
        PostQuitMessage();
        return ;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}