[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. 

     

 

 1 //{{NO_DEPENDENCIES}}

 2 // Microsoft Visual C++ generated include file.

 3 // Used by FE.RC

 4 //

 5 #define IDR_MAINFRAME                    128

 6 #define IDD_FE_DIALOG        102

 7 #define IDD_ABOUTBOX                    103

 8 #define IDS_APP_TITLE                    103

 9 #define IDM_ABOUT                        104

10 #define IDM_EXIT                        105

11 #define IDS_HELLO                        106

12 #define IDI_FE                107

13 #define IDI_SMALL                        108

14 #define IDC_FE                109

15 #define IDC_MYICON                        2

16 #define IDC_STATIC                        -1

17 // Next default values for new objects

18 //

19 #ifdef APSTUDIO_INVOKED

20 #ifndef APSTUDIO_READONLY_SYMBOLS

21 

22 #define _APS_NEXT_RESOURCE_VALUE        129

23 #define _APS_NEXT_COMMAND_VALUE         32771

24 #define _APS_NEXT_CONTROL_VALUE         1000

25 #define _APS_NEXT_SYMED_VALUE           110

26 #endif

27 #endif

reourse.h

 1 // stdafx.h : include file for standard system include files,

 2 //  or project specific include files that are used frequently, but

 3 //      are changed infrequently

 4 //

 5 

 6 #if !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)

 7 #define AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_

 8 

 9 #if _MSC_VER > 1000

10 #pragma once

11 #endif // _MSC_VER > 1000

12 

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

14 

15 

16 // Windows Header Files:

17 #include <windows.h>

18 

19 // C RunTime Header Files

20 #include <stdlib.h>

21 #include <malloc.h>

22 #include <memory.h>

23 #include <tchar.h>

24 

25 // Local Header Files

26 

27 // TODO: reference additional headers your program requires here

28 

29 //{{AFX_INSERT_LOCATION}}

30 // Microsoft Visual C++ will insert additional declarations immediately before the previous line.

31 

32 #endif // !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)

StdAfx.h

main.cpp

  1 #include "stdafx.h"

  2 #include "resourse.h"

  3 #include "math.h"

  4 

  5 #define MAX_LOADSTRING 100

  6 

  7 // Global Variables:

  8 HINSTANCE hInst;                                // current instance

  9 TCHAR szTitle[MAX_LOADSTRING];                                // The title bar text

 10 TCHAR szWindowClass[MAX_LOADSTRING];                                // The title bar text

 11 HPEN hPen;

 12 HBRUSH hBru;

 13 POINT poly1[5];

 14 POINT poly2[5];

 15 POINT poly3[5];

 16 // Foward declarations of functions included in this code module:

 17 ATOM                MyRegisterClass(HINSTANCE hInstance);

 18 BOOL                InitInstance(HINSTANCE, int);

 19 LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);

 20 LRESULT CALLBACK    About(HWND, UINT, WPARAM, LPARAM);

 21 void                MyPaint(HDC hdc);

 22 //========================================================================================

 23 int APIENTRY WinMain(HINSTANCE hInstance,

 24                      HINSTANCE hPrevInstance,

 25                      LPSTR     lpCmdLine,

 26                      int       nCmdShow)

 27 {

 28      // TODO: Place code here.

 29     MSG msg;

 30 

 31     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；

 32 

 33     // 调用InitInstance函数，进行初始化操作；

 34     if (!InitInstance (hInstance, nCmdShow))

 35     {

 36         return FALSE;

 37     }

 38 

 39     // 消息循环（通过消息循环来获取信息，

 40     //进行必要的键盘信息转换而后将控制权交给操作系统，

 41     //有操作系统决定哪个程序的消息处理函数处理消息

 42     while (GetMessage(&msg, NULL, 0, 0)) //获取程序消息

 43     {

 44             TranslateMessage(&msg);//转换伪码及字符

 45             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；

 46     }

 47 

 48     return msg.wParam;

 49 }

 50 //=====================================================================================

 51 

 52 

 53 

 54 //=============================================================================================

 55 //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，

 56 //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。

 57 //==============================================================================================

 58 ATOM MyRegisterClass(HINSTANCE hInstance)

 59 {

 60     WNDCLASSEX wcex;            //申请一个窗口类别“WNDCLASSEX”和结构”wcex“

 61                                 //--------------------------------------------------------------

 62                                 //定义vcex结构的各项信息，其中设定信息处理函数（lpfnWndProc）

 63                                 //为WNDPROC，类别名称为（lpszClassName）为”fe";

 64                                 //--------------------------------------------------------------

 65     wcex.cbSize = sizeof(WNDCLASSEX);

 66 

 67     wcex.style            = CS_HREDRAW | CS_VREDRAW;

 68     wcex.lpfnWndProc    = (WNDPROC)WndProc;

 69     wcex.cbClsExtra        = 0;

 70     wcex.cbWndExtra        = 0;

 71     wcex.hInstance        = hInstance;

 72     wcex.hIcon            = NULL;

 73     wcex.hCursor        = NULL;

 74     wcex.hCursor        = LoadCursor(NULL,IDC_ARROW);

 75     wcex.hbrBackground    = (HBRUSH)(COLOR_WINDOW+1);

 76     wcex.lpszMenuName    = NULL;

 77     wcex.lpszClassName    = "fe";

 78     wcex.hIconSm        = NULL;

 79 

 80     return RegisterClassEx(&wcex);//调用RegisterClassEx函数注册类别，返回一个“ATOM"形态的字符串

 81                                   //此字符串即为类别名称”fe";

 82 }

 83 //============================================================================================

 84 

 85 

 86 //============================================================================================

 87 //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

 88 //============================================================================================

 89 BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)

 90 {

 91    HWND hWnd;

 92    HDC hdc;

 93    int i;

 94    const double pi=3.1415926535;

 95    hInst = hInstance; // 把instance handle 储存在全局变量中；

 96 

 97    hWnd = CreateWindow("fe","绘图窗口",WS_OVERLAPPEDWINDOW,

 98       CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

 99                       //-----------------------------------------------

100                       //调用CreateWindow函数来建立一个窗口对象

101                       //第一个参数就是窗口建立依据的类别名称

102                       //-----------------------------------------------

103    if (!hWnd)

104    {

105       return FALSE;

106    }

107    //------------------------------------------------

108    //设定窗口的位置及窗口的大小，然后绘制显示在设备上

109    //-------------------------------------------------

110    MoveWindow(hWnd,10,10,600,450,true);//位置及大小

111    ShowWindow(hWnd, nCmdShow);//改定窗口显示时的状态

112    UpdateWindow(hWnd);//将窗口绘制在显示设备上

113 

114    for(i=0;i<=4;i++)

115    {

116        poly1[i].x = 100 + 100 * sin(i * 72 * pi / 180);

117        poly1[i].y = 100 + 100 * cos(i * 72 * pi / 180);

118 

119        poly2[i].x = poly1[i].x + 300;

120        poly2[i].y = poly1[i].y;

121 

122        poly3[i].x = poly1[i].x + 180;

123        poly3[i].y = poly1[i].y + 200;

124    }

125 

126    hPen = CreatePen(PS_SOLID,5,RGB(20,240,0));

127    //hBru = GreateHatchBrush(HS_BDIAGONAL,RGB(0,255,0));

128 

129    hdc = GetDC(hWnd);

130    MyPaint(hdc);

131    ReleaseDC(hWnd,hdc);

132 

133    return TRUE;

134 }

135 //============================================================================================

136 

137 

138 //============================================================================================

139 //

140 //============================================================================================

141 void MyPaint(HDC hdc)

142 {

143     SelectObject(hdc,hPen);

144     SelectObject(hdc,hBru);

145 

146     //PolylineTo(hdc,poly1,4);

147     //Polyline(hdc,poly2,4);

148     //Polygon(hdc,poly3,4);

149 

150     //PolyBezierTo(hdc,poly1,3);

151     PolyBezier(hdc,poly1,4);

152 }

153 //============================================================================================

154 

155 //============================================================================================

156 //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

157 //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

158 //程序都会接收信息，选择性接受、处理；

159 //============================================================================================

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

161 {

162     PAINTSTRUCT ps;

163     HDC hdc;

164 

165     switch (message)                   //判断消息类型

166     {

167         case WM_PAINT:                //窗口重绘制

168             hdc = BeginPaint(hWnd, &ps);

169             EndPaint(hWnd, &ps);

170             break;

171         case WM_DESTROY:              //处理窗口结束消息

172             PostQuitMessage(0);

173             break;

174         default:

175             return DefWindowProc(hWnd, message, wParam, lParam);

176    }

177    return 0;

178 }

179 //============================================================================================