BOOL PolyBezier(

    HDC hdc,            // 设备环境句柄

    CONST POINT* lppt,  // 端点和控制点（顺序是开始点、第一控点、第二控点、终点）

    DWORD cPoints       // 端点和控点的总数量

);

BOOL PolyBezierTo(

    HDC hdc,            // 设备环境句柄

    CONST POINT *lppt,  // 端点和控制点（顺序是第一控点、第二控点、终点）

    DWORD cCount        // 端点和控点的总数量

);

#include <windows.h>

void DrawBezier(HDC hdc, POINT apt[]) {

    PolyBezier(hdc, apt, );

    MoveToEx(hdc, apt[].x, apt[].y, NULL);

    LineTo(hdc, apt[].x, apt[].y);

    MoveToEx(hdc, apt[].x, apt[].y, NULL);

    LineTo(hdc, apt[].x, apt[].y);

}

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

    HDC hdc;

    PAINTSTRUCT ps;

    static int cxClient, cyClient;

    static POINT apt[];

    switch (message) {

    case WM_SIZE:

        cxClient = LOWORD(lParam);

        cyClient = HIWORD(lParam);

        apt[].x = cxClient / ;

        apt[].y = cyClient / ;

        apt[].x = cxClient *  / ;

        apt[].y = cyClient / ;

        apt[].x = cxClient *  / ;

        apt[].y = cyClient *  / ;

        apt[].x = cxClient *  / ;

        apt[].y = cyClient / ;

        return ;

    case WM_LBUTTONDOWN:

    case WM_RBUTTONDOWN:

    case WM_MOUSEMOVE:

        if (wParam & MK_LBUTTON || wParam & MK_RBUTTON) {

            hdc = GetDC(hwnd);

            SelectObject(hdc, GetStockObject(BLACK_PEN));

            DrawBezier(hdc, apt);

            if (wParam & MK_LBUTTON) {

                apt[].x = LOWORD(lParam);

                apt[].y = HIWORD(lParam);

             }

            if (wParam & MK_RBUTTON) {

                apt[].x = LOWORD(lParam);

                apt[].y = HIWORD(lParam);

            }

            SelectObject(hdc, GetStockObject(WHITE_PEN));

            DrawBezier(hdc, apt);

            ReleaseDC(hwnd, hdc);

        }

        return ;

    case WM_PAINT:

        InvalidateRect(hwnd, NULL, TRUE);

        hdc = BeginPaint(hwnd, &ps);

        SelectObject(hdc, GetStockObject(WHITE_PEN));

        DrawBezier(hdc, apt);

        EndPaint(hwnd, &ps);

        return ;

    case WM_DESTROY:

        PostQuitMessage();

        return ;

    }

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

}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {

    LPCTSTR lpszClassName = TEXT("BezierDemo");

    LPCTSTR lpszWindowName = TEXT("Bezier Demo");

    WNDCLASS wndclass;

    HWND hwnd;

    MSG msg;

    wndclass.cbClsExtra = ;

    wndclass.cbWndExtra = ;

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

    wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);

    wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);

    wndclass.hInstance = hInstance;

    wndclass.lpfnWndProc = WndProc;

    wndclass.lpszClassName = lpszClassName;

    wndclass.lpszMenuName = lpszWindowName;

    wndclass.style = CS_HREDRAW | CS_VREDRAW;

    if (!RegisterClass(&wndclass)) {

        MessageBox(NULL, TEXT("This program requires Windows NT!"), lpszWindowName, MB_ICONERROR);

        return ;

    }

    hwnd = CreateWindow(

        lpszClassName,

        lpszWindowName,

        WS_OVERLAPPEDWINDOW,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        NULL,

        NULL,

        hInstance,

        NULL

    );

    ShowWindow(hwnd, nCmdShow);

    UpdateWindow(hwnd);

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

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return msg.wParam;

}