// Windows C 图形程序设计 五角星 WJX.cpp
// 定义应用程序进入点

#include <windows.h>
#include <math.h>
#include "WJX.h"
#include "string.h"
#include "stdafx.h"
#include "resource.h"

#define MAX_LOADSTRING 100

// 公有变量
HINSTANCE hInst;    // 当前实例
HWND      hWndMain;
WPARAM    wParam;
TCHAR szTitle[MAX_LOADSTRING];  // 标题栏
TCHAR szWindowClass[MAX_LOADSTRING];

// Foward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

// Windows 应用程序入口点 WinMain
int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;

	// 初始化公有字符串
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_WJX, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// 初始化窗口，注册窗口 nCmdShow
    if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_WJX);

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

	return msg.wParam;
}

// 注册窗口类，填写窗口属性 RegisterClass
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX); 

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, (LPCTSTR)IDI_WJX);
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	// 工作区背景颜色（画刷）
	// +2  +1  +0   -1  -2  -3
	// 黑  白  浅灰 灰  蓝  浅蓝
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW-3);
	wcex.lpszMenuName	= (LPCSTR)IDC_WJX;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

	return RegisterClassEx(&wcex);
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   // 保存实例句柄
   hInst = hInstance; 

   // 创建窗口 CreateWindow
   hWnd = CreateWindow(
	   szWindowClass, 
	   // 窗口标题栏
	   "Visual C++ 6.0 Windows C 图形程序设计 ddxss",
	   WS_OVERLAPPEDWINDOW,
       CW_USEDEFAULT, 0, 
	   CW_USEDEFAULT, 0, 
	   NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   // 显示窗口 ShowWindow
   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);
   return TRUE;
}

// 窗口过程函数 WndProc，接收和处理消息
LRESULT CALLBACK WndProc(
		HWND hWnd,
		UINT message, 
		WPARAM wParam,
		LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;
	static int fnPenStyle=PS_SOLID;  //画笔风格：实线
    static int nPenWidth=2;          //画笔宽度：
	static COLORREF crPenColor=0;    //画笔颜色：
	static COLORREF crBrushColor=0;  //画刷颜色：
	// HPEN hPen;

	TCHAR szWJX[MAX_LOADSTRING];


	// 装载字符串 "WJX"
	LoadString(hInst, IDS_WJX, szWJX, MAX_LOADSTRING);

	double x0=400.0,y0=270.0,x,y,ym=90.0,
		   x1=x0-220.0,x2=x0+220.0;
	switch (message) 
	{
	    case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 

  // 菜单选择
			switch (wmId)
			{
				case IDM_ABOUT:
				   DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				   break;
				case IDM_EXIT:
				   DestroyWindow(hWnd);
				   break;
				default:
				   return DefWindowProc(hWnd, message, wParam, lParam);
			}
			break;

		case WM_PAINT:
  // 画图准备 BeginPaint
		hdc = BeginPaint(hWnd, &ps);

  // 添加画图代码
		hdc = GetDC(hWnd);  // 检取设备描述表

  // 矩形紫色边框线
  // 上边框紫线线宽2
  for(x=x0-390.0;x<x0+390.0;x+=0.01)
  {
  for(y=y0-240.0;y<y0-238.0;y++)
  {
	SetPixel(hdc,int(x),int(y),RGB(255,0,255));
  }
  }

  // 右边框紫线
  for(y=y0-240.0;y<y0+240.0;y+=0.01)
  {
  for(x=x0+390.0;x>x0+388.0;x--)
  {
	SetPixel(hdc,int(x),int(y),RGB(255,0,255));
  }
  }

  // 下边框紫线
  for(x=x0+390.0;x>x0-390.0;x-=0.01)
  {
  for(y=y0+240.0;y>y0+238.0;y--)
  {
	SetPixel(hdc,int(x),int(y),RGB(255,0,255));
  }
  }

  // 左边框紫线
  for(y=y0+240.0;y>y0-240.0;y-=0.01)
  {
  for(x=x0-390.0;x<x0-388.0;x++)
  {
	SetPixel(hdc,int(x),int(y),RGB(255,0,255));
  }
  }

 // 矩形绿色边框线
 // 上边框绿线宽4
  for(x=x0-380.0;x<x0+382.0;x+=0.02)
  {
  for(y=y0-235.0;y<y0-230.0;y++)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,0));
  }
  }

  // 右边框绿线
  for(y=y0-235.0;y<y0+236.0;y+=0.03)
  {
  for(x=x0+385.0;x>x0+380.0;x--)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,0));
  }
  }

  // 下边框绿线
  for(x=x0+380.0;x>x0-380.0;x-=0.03)
  {
  for(y=y0+235.0;y>y0+230.0;y--)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,0));
  }
  }

  // 左边框绿线
  for(y=y0+235.0;y>y0-235.0;y-=0.03)
  {
  for(x=x0-385.0;x<x0-380.0;x++)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,0));
  }
  }

  // 矩形青色边框线
  // 上边框青线宽2
  for(x=x0-377.0;x<x0+377.0;x+=0.01)
  {
  for(y=y0-227.0;y<y0-225.0;y++)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,255));
  }
  }

  //右边框青线
  for(y=y0-227.0;y<y0+227.0;y+=0.01)
  {
  for(x=x0+377.0;x>x0+375.0;x--)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,255));
  }
  }

  //下边框青线
  for(x=x0+377.0;x>x0-377.0;x-=0.01)
  {
  for(y=y0+227.0;y>y0+225.0;y--)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,255));
  }
  }

  //左边框青线
  for(y=y0+227.0;y>y0-225.0;y-=0.01)
  {
  for(x=x0-377.0;x<x0-375.0;x++)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,255));
  }
  }

  // 绿色水平轴线
  for(x=x0-370;x<x0+370;x+=0.01)
  {
  for(y=y0;y<y0+2.0;y++)
  {
	SetPixel(hdc,int(x),int(y),RGB(0,255,0));
  }
  }

  // 紫色垂直轴线
  for(y=y0-220;y<y0+220;y+=0.01)
  {
  for(x=x0;x<x0+2.0;x++)
  {
	SetPixel(hdc,int(x),int(y),RGB(255,0,255));
  }
  }

  // 椭圆形
	 Ellipse(hdc,int(x0-360),int(y0-210),int(x0+360),int(y0+210));

  // 圆形
	 Ellipse(hdc,int(x0-200),int(y0-200),int(x0+200),int(y0+200));

  // 五角星
	 MoveToEx(hdc,int(x0),int(y0-200),NULL);  // 起点第1个角点
	 LineTo(hdc,int(x0+120),int(y0+160));     // 画至第3个角点
	 LineTo(hdc,int(x0-190),int(y0-60));      // 画至第5个角点
	 LineTo(hdc,int(x0+190),int(y0-60));      // 画至第2个角点
	 LineTo(hdc,int(x0-120),int(y0+160));     // 画至第4个角点
	 LineTo(hdc,int(x0),int(y0-200));         // 画至第1个角点

  ReleaseDC(hWnd,hdc);
    RECT rt;
	GetClientRect(hWnd, &rt);

  // 输出文本 DrawText
     TextOut(hdc,int(x0-86),int(y0-50),"Windows C 图形程序设计",22);
     TextOut(hdc,int(x0-26),int(y0-25),"五角星",6);
     TextOut(hdc,int(x0-78),int(y0),"电大 谢山水 2003.4.13.",22);
	 DrawText(hdc, szWJX, strlen(szWJX), &rt, DT_CENTER);

  // 结束画图 EndPaint
			EndPaint(hWnd, &ps);
			break;
		case WM_DESTROY:
			PostQuitMessage(0);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}

// Mesage handler for about box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
		case WM_INITDIALOG:
				return TRUE;

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