看看咱都编的啥？

//

#include "stdafx.h"
#include "22222.h"
#include "math.h"

#define MAX_LOADSTRING 100

int xa=100,ya=100,xb=300,yb=100,xc=300,yc=200;// 全局变量:
RECT rect;

HINSTANCE hInst;        // 当前实例
TCHAR szTitle[MAX_LOADSTRING];     // 标题栏文本
TCHAR szWindowClass[MAX_LOADSTRING];   // 主窗口类名

// 此代码模块中包含的函数的前向声明:
ATOM    MyRegisterClass(HINSTANCE hInstance);
BOOL    InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
 UNREFERENCED_PARAMETER(hPrevInstance);
 UNREFERENCED_PARAMETER(lpCmdLine);

  // TODO: 在此放置代码。
 MSG msg;
 HACCEL hAccelTable;

 // 初始化全局字符串
 LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
 LoadString(hInstance, IDC_MY10060433, szWindowClass, MAX_LOADSTRING);
 MyRegisterClass(hInstance);

 // 执行应用程序初始化:
 if (!InitInstance (hInstance, nCmdShow))
 {
  return FALSE;
 }

 hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_MY10060433));

 // 主消息循环:
 while (GetMessage(&msg, NULL, 0, 0))
 {
  if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
  {
   TranslateMessage(&msg);
   DispatchMessage(&msg);
  }
 }

 return (int) msg.wParam;
}

//
//  函数: MyRegisterClass()
//
//  目的: 注册窗口类。
//
//  注释:
//
//    仅当希望
//    此代码与添加到 Windows 95 中的“RegisterClassEx”
//    函数之前的 Win32 系统兼容时，才需要此函数及其用法。调用此函数十分重要，
//    这样应用程序就可以获得关联的
//    “格式正确的”小图标。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
 WNDCLASSEX wcex;

 wcex.cbSize = sizeof(WNDCLASSEX);

 wcex.style   = CS_HREDRAW | CS_VREDRAW;
 wcex.lpfnWndProc = WndProc;
 wcex.cbClsExtra  = 0;
 wcex.cbWndExtra  = 0;
 wcex.hInstance  = hInstance;
 wcex.hIcon   = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_MY10060433));
 wcex.hCursor  = LoadCursor(NULL, IDC_ARROW);
 wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
 wcex.lpszMenuName = MAKEINTRESOURCE(IDC_MY10060433);
 wcex.lpszClassName = szWindowClass;
 wcex.hIconSm  = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

 return RegisterClassEx(&wcex);
}

//
//   函数: InitInstance(HINSTANCE, int)
//
//   目的: 保存实例句柄并创建主窗口
//
//   注释:
//
//        在此函数中，我们在全局变量中保存实例句柄并
//        创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // 将实例句柄存储在全局变量中

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  函数: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  目的: 处理主窗口的消息。
//
//  WM_COMMAND - 处理应用程序菜单
//  WM_PAINT - 绘制主窗口
//  WM_DESTROY - 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
 int wmId, wmEvent;
 PAINTSTRUCT ps;
 HDC hdc; 
    COLORREF clr=RGB(122,14,109);
 HPEN pen,pen1,pen2;
 pen=CreatePen(1,2,clr);
 float si,co,x,y;
 si=(float)0.1736;
    co=(float)0.9848;
 pen1=CreatePen(2,2,RGB(0,166,200));
 pen2=CreatePen(4,2,RGB(80,190,150));

 switch (message)
 {
 case WM_COMMAND:
  wmId    = LOWORD(wParam);
  wmEvent = HIWORD(wParam);
  // 分析菜单选择:
  switch (wmId)
  {
  case IDM_ABOUT:
   DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
   break;
  case IDM_EXIT:
   DestroyWindow(hWnd);
   break;
  default:
   return DefWindowProc(hWnd, message, wParam, lParam);
  }
  break;
 case WM_PAINT:
  hdc = BeginPaint(hWnd, &ps);
  // TODO: 在此添加任意绘图代码...
  SelectObject(hdc,pen2);
    MoveToEx(hdc,rect.right/2,rect.bottom-20,NULL);
    LineTo(hdc,rect.right/2,20);
    LineTo(hdc,rect.right/2-6,30);
    MoveToEx(hdc,rect.right/2,20,NULL);
    TextOutA(hdc,rect.right/2-20,20,"y",1);
    LineTo(hdc,rect.right/2+6,30);
        SelectObject(hdc,pen1);
    MoveToEx(hdc,20,rect.bottom/2,NULL);
    LineTo(hdc,rect.right-20,rect.bottom/2);
    LineTo(hdc,rect.right-20-10,rect.bottom/2-6);
    MoveToEx(hdc,rect.right-20,rect.bottom/2,NULL);
    TextOutA(hdc,rect.right-20-5,rect.bottom/2+15,"x",1);
    LineTo(hdc,rect.right-20-10,rect.bottom/2+6);
    TextOutA(hdc,rect.right/2-10,rect.bottom/2+5,"0",1);
     SelectObject(hdc,pen);
    MoveToEx(hdc,xa,ya,NULL);
    LineTo(hdc,xb,yb);
    LineTo(hdc,xc,yc);
    LineTo(hdc,xa,ya);
  EndPaint(hWnd, &ps);
  TextOutA(hdc,100,100,"x",15);
  break;
 case WM_CHAR:
  wmId    = LOWORD(wParam);
  switch(wmId)
  {
  case 's':
   
   ya+=20;
  
   yb+=20;yc+=20;
   InvalidateRect(hWnd,NULL,true);
   UpdateWindow(hWnd);
   break;
  case 'w':
   
   ya-=20;
  
   yb-=20;yc-=20;
   InvalidateRect(hWnd,NULL,true);
   UpdateWindow(hWnd);
            break;
  case 'a':
   xa-=20;
   xb-=20;
   xc-=20;
            InvalidateRect(hWnd,NULL,true);
   UpdateWindow(hWnd);
            break;
  case 'd':
            xa+=20;
   xb+=20;
   xc+=20;
            InvalidateRect(hWnd,NULL,true);
   UpdateWindow(hWnd);
            break;
  case 'r':
   x=(float)xa;y=(float)ya;
   xa=int((x-rect.right/2)*co-(y-rect.bottom/2)*si+rect.right/2);
   ya=int((x-rect.right/2)*si+(y-rect.bottom/2)*co+rect.bottom/2);
   x=(float)xb;y=(float)yb;
   xb=int((x-rect.right/2)*co-(y-rect.bottom/2)*si+rect.right/2);
   yb=int((x-rect.right/2)*si+(y-rect.bottom/2)*co+rect.bottom/2);
   x=(float)xc;y=(float)yc;
   xc=int((x-rect.right/2)*co-(y-rect.bottom/2)*si+rect.right/2);
   yc=int((x-rect.right/2)*si+(y-rect.bottom/2)*co+rect.bottom/2);
   InvalidateRect(hWnd,NULL,true);
   UpdateWindow(hWnd);
   break;
  case 'e':
            x=(float)xa;y=(float)ya;
   xa=int((x-rect.right/2)*co+(y-rect.bottom/2)*si+rect.right/2);
   ya=int((y-rect.bottom/2)*co-(x-rect.right/2)*si+rect.bottom/2);
   x=(float)xb;y=(float)yb;
   xb=int((x-rect.right/2)*co+(y-rect.bottom/2)*si+rect.right/2);
   yb=int((y-rect.bottom/2)*co-(x-rect.right/2)*si+rect.bottom/2);
   x=(float)xc;y=(float)yc;
   xc=int((x-rect.right/2)*co+(y-rect.bottom/2)*si+rect.right/2);
   yc=int((y-rect.bottom/2)*co-(x-rect.right/2)*si+rect.bottom/2);
   InvalidateRect(hWnd,NULL,true);
   UpdateWindow(hWnd);
   break;
  }
  break;
 case WM_SIZE:
  ::GetClientRect(hWnd,&rect);
  break;
 case WM_DESTROY:
  PostQuitMessage(0);
  break;
 default:
  return DefWindowProc(hWnd, message, wParam, lParam);
 }
 return 0;
}

// “关于”框的消息处理程序。
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
 UNREFERENCED_PARAMETER(lParam);
 switch (message)
 {
 case WM_INITDIALOG:
  return (INT_PTR)TRUE;

 case WM_COMMAND:
  if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
  {
   EndDialog(hDlg, LOWORD(wParam));
   return (INT_PTR)TRUE;
  }
  break;
 }
 return (INT_PTR)FALSE;
}