>_<: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 //============================================================================================
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时间： 2024-10-24 15:55:06