#include <windows.h>

#include <math.h>

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);

#define R 200

#define PI 3.1415926

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)

{

    //声明全局数据：类名

    static TCHAR szClassName[] = TEXT("MyWindows");

    HWND hwnd;

    MSG msg;

    //注册窗口类

    WNDCLASS wndclass;

    wndclass.hInstance = hInstance;

    wndclass.lpszClassName = szClassName;

    wndclass.cbClsExtra = ;

    wndclass.cbWndExtra = ;

    wndclass.lpfnWndProc = WndProc;

    wndclass.lpszMenuName = NULL;

    wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);

    wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);

    wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

    wndclass.style = CS_HREDRAW;

    if (!RegisterClass(&wndclass))

    {

        MessageBox(NULL, TEXT("this program must run in Windows NT!"), szClassName, MB_ICONERROR);

        return ;

    }

    hwnd = CreateWindow(

        szClassName,

        TEXT("MyFirstPractice"),

        WS_OVERLAPPEDWINDOW,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        NULL,

        NULL,

        hInstance,

        NULL

        );

    ShowWindow(hwnd, nShowCmd);

    UpdateWindow(hwnd);

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

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return msg.wParam;

}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

    HDC hdc;

    PAINTSTRUCT ps;

    RECT rect;

    static HBRUSH hBrush, hOldBrush;

//    绘制一个多边形，可填充是需要顶点的个数polygon

    POINT apt1[] = { , , , , , ,,  };

//    绘制一个封闭多边形polyline需要顶点数+1    注意：用线绘制的封闭图像不具有填充能力

//    POINT apt2[5] = { 400, 200, 500, 100, 600, 200, 500, 300, 400, 200 };

    POINT apt2[];

    int cxClient, cyClient;    //星星的中心位置

    switch (message)

    {

    case WM_PAINT:

        hdc = BeginPaint(hwnd, &ps);

        GetClientRect(hwnd, &rect);

        cxClient = rect.right / ;

        cyClient = rect.bottom / ;

        //获取五个顶点

        //左上顶点

        apt2[].x = cxClient - (int)(R*cos(PI / ));

        apt2[].y = cyClient - (int)(R*sin(PI / ));

        //右上顶点

        apt2[].x = cxClient + (int)(R*cos(PI / ));

        apt2[].y = cyClient - (int)(R*sin(PI / ));

        //左下顶点

        apt2[].x = cxClient - (int)(R*cos(PI / ));

        apt2[].y = cyClient + (int)(R*sin(PI / ));

        //上顶点

        apt2[].x = cxClient;

        apt2[].y = cyClient - R;

        //右下顶点

        apt2[].x = cxClient + (int)(R*cos(PI / ));

        apt2[].y = cyClient + (int)(R*sin(PI / ));

         hBrush = CreateSolidBrush(RGB(,,));

         hOldBrush = SelectObject(hdc, hBrush);

//        SetPolyFillMode(hdc, ALTERNATE);    //交替填充

        SetPolyFillMode(hdc, WINDING);    //螺旋填充，填充所有能够一笔完成的图形

//

         Polygon(hdc, apt2, );

//         Polyline(hdc, apt2, 5);

//

         SelectObject(hdc, hOldBrush);

         DeleteObject(hOldBrush);

        EndPaint(hwnd, &ps);

        break;

    case WM_DESTROY:

        PostQuitMessage();

        return ;

    }

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

}