[游戏模版5] Win32 折线 弧线

时间：2022-05-12 07:52:00

>_<: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.

[游戏模版5] Win32 折线 弧线  [游戏模版5] Win32 折线 弧线  [游戏模版5] Win32 折线 弧线

[游戏模版5] Win32 折线 弧线  [游戏模版5] Win32 折线 弧线

 //{{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 ;

 }

 //============================================================================================

相关文章