[游戏模版5] Win32 折线 弧线

>_<:first build some points put in poly1[],poly2[] and poly3[] in the function of InitInstance(...)

>_<:then in the function MyDraw() use  PolylineTo(...)\Polyline(...)\Polygon(...) draw diferent line and use PolyBezierTo(...)\PolyBezier(...) draw two kind curve  separately.

>_<:finally show the different among these functions.

>_<!there I don't use message to draw, instread I put the MyDraw() in the last of InitInstance(...) function.

   

 

 //{{NO_DEPENDENCIES}}
 // Microsoft Visual C++ generated include file.
 // Used by FE.RC
 //
 #define IDR_MAINFRAME                    128
 #define IDD_FE_DIALOG        102
 #define IDD_ABOUTBOX                    103
 #define IDS_APP_TITLE                    103
 #define IDM_ABOUT                        104
 #define IDM_EXIT                        105
 #define IDS_HELLO                        106
 #define IDI_FE                107
 #define IDI_SMALL                        108
 #define IDC_FE                109
 #define IDC_MYICON                        2
 #define IDC_STATIC                        -1
 // Next default values for new objects
 //
 #ifdef APSTUDIO_INVOKED
 #ifndef APSTUDIO_READONLY_SYMBOLS

 #define _APS_NEXT_RESOURCE_VALUE        129
 #define _APS_NEXT_COMMAND_VALUE         32771
 #define _APS_NEXT_CONTROL_VALUE         1000
 #define _APS_NEXT_SYMED_VALUE           110
 #endif
 #endif

reourse.h

 // stdafx.h : include file for standard system include files,
 //  or project specific include files that are used frequently, but
 //      are changed infrequently
 //

 #if !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)
 #define AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_

 #if _MSC_VER > 1000
 #pragma once
 #endif // _MSC_VER > 1000

 #define WIN32_LEAN_AND_MEAN        // Exclude rarely-used stuff from Windows headers

 // Windows Header Files:
 #include <windows.h>

 // C RunTime Header Files
 #include <stdlib.h>
 #include <malloc.h>
 #include <memory.h>
 #include <tchar.h>

 // Local Header Files

 // TODO: reference additional headers your program requires here

 //{{AFX_INSERT_LOCATION}}
 // Microsoft Visual C++ will insert additional declarations immediately before the previous line.

 #endif // !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)

StdAfx.h

main.cpp

 #include "stdafx.h"
 #include "resourse.h"
 #include "math.h"

 #define MAX_LOADSTRING 100

 // Global Variables:
 HINSTANCE hInst;                                // current instance
 TCHAR szTitle[MAX_LOADSTRING];                                // The title bar text
 TCHAR szWindowClass[MAX_LOADSTRING];                                // The title bar text
 HPEN hPen;
 HBRUSH hBru;
 POINT poly1[];
 POINT poly2[];
 POINT poly3[];
 // 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);
 void                MyPaint(HDC hdc);
 //========================================================================================
 int APIENTRY WinMain(HINSTANCE hInstance,
                      HINSTANCE hPrevInstance,
                      LPSTR     lpCmdLine,
                      int       nCmdShow)
 {
      // TODO: Place code here.
     MSG msg;

     MyRegisterClass(hInstance);//调用函数向系统注册窗口类别，输入参数hInstance是目前运行程序的对象代码；

     // 调用InitInstance函数，进行初始化操作；
     if (!InitInstance (hInstance, nCmdShow))
     {
         return FALSE;
     }

     // 消息循环（通过消息循环来获取信息，
     //进行必要的键盘信息转换而后将控制权交给操作系统，
     //有操作系统决定哪个程序的消息处理函数处理消息
     while (GetMessage(&msg, NULL, , )) //获取程序消息
     {
             TranslateMessage(&msg);//转换伪码及字符
             DispatchMessage(&msg);//将控制权交给系统，再有系统决定负责处理消息的程序；
     }

     return msg.wParam;
 }
 //=====================================================================================

 //=============================================================================================
 //在建立程序窗口实体之前，必须先定义一个窗口类别，其中包含所要建立窗口的信息，
 //并向系统注册，这里的MyRegisterClass函数就是进行定义及注册窗口类别的函数。
 //==============================================================================================
 ATOM MyRegisterClass(HINSTANCE hInstance)
 {
     WNDCLASSEX wcex;            //申请一个窗口类别“WNDCLASSEX”和结构”wcex“
                                 //--------------------------------------------------------------
                                 //定义vcex结构的各项信息，其中设定信息处理函数（lpfnWndProc）
                                 //为WNDPROC，类别名称为（lpszClassName）为”fe";
                                 //--------------------------------------------------------------
     wcex.cbSize = sizeof(WNDCLASSEX);

     wcex.style            = CS_HREDRAW | CS_VREDRAW;
     wcex.lpfnWndProc    = (WNDPROC)WndProc;
     wcex.cbClsExtra        = ;
     wcex.cbWndExtra        = ;
     wcex.hInstance        = hInstance;
     wcex.hIcon            = NULL;
     wcex.hCursor        = NULL;
     wcex.hCursor        = LoadCursor(NULL,IDC_ARROW);
     wcex.hbrBackground    = (HBRUSH)(COLOR_WINDOW+);
     wcex.lpszMenuName    = NULL;
     wcex.lpszClassName    = "fe";
     wcex.hIconSm        = NULL;

     return RegisterClassEx(&wcex);//调用RegisterClassEx函数注册类别，返回一个“ATOM"形态的字符串
                                   //此字符串即为类别名称”fe";
 }
 //============================================================================================

 //============================================================================================
 //按照前面所定义的窗口类别来建立并显示实际的程序窗口
 //============================================================================================
 BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
 {
    HWND hWnd;
    HDC hdc;
    int i;
    const double pi=3.1415926535;
    hInst = hInstance; // 把instance handle 储存在全局变量中；

    hWnd = CreateWindow("fe","绘图窗口",WS_OVERLAPPEDWINDOW,
       CW_USEDEFAULT, , CW_USEDEFAULT, , NULL, NULL, hInstance, NULL);
                       //-----------------------------------------------
                       //调用CreateWindow函数来建立一个窗口对象
                       //第一个参数就是窗口建立依据的类别名称
                       //-----------------------------------------------
    if (!hWnd)
    {
       return FALSE;
    }
    //------------------------------------------------
    //设定窗口的位置及窗口的大小，然后绘制显示在设备上
    //-------------------------------------------------
    MoveWindow(hWnd,,,,,true);//位置及大小
    ShowWindow(hWnd, nCmdShow);//改定窗口显示时的状态
    UpdateWindow(hWnd);//将窗口绘制在显示设备上

    for(i=;i<=;i++)
    {
        poly1[i].x =  +  * sin(i *  * pi / );
        poly1[i].y =  +  * cos(i *  * pi / );

        poly2[i].x = poly1[i].x + ;
        poly2[i].y = poly1[i].y;

        poly3[i].x = poly1[i].x + ;
        poly3[i].y = poly1[i].y + ;
    }

    hPen = CreatePen(PS_SOLID,,RGB(,,));
    //hBru = GreateHatchBrush(HS_BDIAGONAL,RGB(0,255,0));

    hdc = GetDC(hWnd);
    MyPaint(hdc);
    ReleaseDC(hWnd,hdc);

    return TRUE;
 }
 //============================================================================================

 //============================================================================================
 //
 //============================================================================================
 void MyPaint(HDC hdc)
 {
     SelectObject(hdc,hPen);
     SelectObject(hdc,hBru);

     //PolylineTo(hdc,poly1,4);
     //Polyline(hdc,poly2,4);
     //Polygon(hdc,poly3,4);

     //PolyBezierTo(hdc,poly1,3);
     PolyBezier(hdc,poly1,);
 }
 //============================================================================================

 //============================================================================================
 //在前面定义类别的时候把WndProc定义为消息处理函数（当某些外部消息发生时，会按消息的类型
 //来决定该如何进行处理。此外该函数也是一个回叫函数（CALLBACK)（windows系统函数）每一个
 //程序都会接收信息，选择性接受、处理；
 //============================================================================================
 LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
     PAINTSTRUCT ps;
     HDC hdc;

     switch (message)                   //判断消息类型
     {
         case WM_PAINT:                //窗口重绘制
             hdc = BeginPaint(hWnd, &ps);
             EndPaint(hWnd, &ps);
             break;
         case WM_DESTROY:              //处理窗口结束消息
             PostQuitMessage();
             break;
         default:
             return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return ;
 }
 //============================================================================================