Win32实现GDI画太极图

#include "stdafx.h"
#include "21-10-对弈-win32第四次作业-GDI.h"


#define MAX_LOADSTRING 100


// 全局变量: 
HINSTANCE hInst; // 当前实例
TCHAR szTitle[MAX_LOADSTRING]; // 标题栏文本
TCHAR szWindowClass[MAX_LOADSTRING]; // 主窗口类名


// 此代码模块中包含的函数的前向声明: 
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);


int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPTSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);


  // TODO:  在此放置代码。
MSG msg;
HACCEL hAccelTable;


// 初始化全局字符串
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_MY2110WIN32GDI, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);


// 执行应用程序初始化: 
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}


hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_MY2110WIN32GDI));


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


return (int) msg.wParam;
}






//
//  函数:  MyRegisterClass()
//
//  目的:  注册窗口类。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;


wcex.cbSize = sizeof(WNDCLASSEX);


wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_MY2110WIN32GDI));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));


return RegisterClassEx(&wcex);
}


//
//   函数:  InitInstance(HINSTANCE, int)
//
//   目的:  保存实例句柄并创建主窗口
//
//   注释: 
//
//        在此函数中，我们在全局变量中保存实例句柄并
//        创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;


   hInst = hInstance; // 将实例句柄存储在全局变量中


   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);


   if (!hWnd)
   {
      return FALSE;
   }


   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);


   return TRUE;
}


//
//  函数:  WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  目的:    处理主窗口的消息。
//
//  WM_COMMAND - 处理应用程序菜单
//  WM_PAINT - 绘制主窗口
//  WM_DESTROY - 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;


switch (message)
{
case WM_LBUTTONDOWN:
{
hdc = GetDC(hWnd);
HPEN hp1 = (HPEN)CreatePen(PS_SOLID, 1, RGB(0, 0, 0 ));//黑色画笔
SelectObject(hdc, hp1);
Ellipse(hdc, 100, 100, 300, 300);//圆心为（200,200），半径为100的大圆


HBRUSH hb1 = (HBRUSH)CreateSolidBrush(RGB(0, 0, 0));//纯色黑色画刷
SelectObject(hdc, hb1);
Pie(hdc, 100,100,300,300,200,300,200,100);//染黑右边的半圆


HBRUSH hb2 = (HBRUSH)CreateSolidBrush(RGB(0, 0, 0));
SelectObject(hdc, hb2);
Pie(hdc, 150, 100, 250, 200, 200, 100, 200, 200);//上面的左半圆，圆心是(200,150),半径50





HBRUSH hb3 = (HBRUSH)CreateSolidBrush(RGB(255, 255, 255));
SelectObject(hdc, hb3); //染白


HPEN hp2 = (HPEN)CreatePen(PS_SOLID, 1, RGB(255, 255, 255));
SelectObject(hdc, hp2);
Pie(hdc, 150, 200, 250, 300, 200, 300, 200, 200);//下面的右半圆，圆心（200,250），半径50




HPEN hp3 = (HPEN)CreatePen(PS_SOLID, 1, RGB(0, 0, 0));
SelectObject(hdc, hp3);
Arc(hdc, 150, 200, 250, 300, 200, 300, 200, 200);//下面的右半圆，描黑


HBRUSH hb4 = (HBRUSH)CreateSolidBrush(RGB(0, 0, 0));
SelectObject(hdc, hb4);
Ellipse(hdc, 190, 240, 210, 260); //下面的黑色小圆，圆心（200,250），半径10




HBRUSH hb5 = (HBRUSH)CreateSolidBrush(RGB(255, 255, 255));
SelectObject(hdc, hb5);
Ellipse(hdc, 190, 140, 210, 160); //下面的白色小圆，圆心（200,150），半径10


//释放
DeleteObject(hb5);
DeleteObject(hb4);
DeleteObject(hb3);
DeleteObject(hb2);
DeleteObject(hb1);
DeleteObject(hp3);
DeleteObject(hp2);
    DeleteObject(hp1);
    ReleaseDC(hWnd, hdc);
}
break;
case WM_COMMAND:
wmId    = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// 分析菜单选择: 
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
// TODO:  在此添加任意绘图代码...
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}


// “关于”框的消息处理程序。
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam);
switch (message)
{
case WM_INITDIALOG:
return (INT_PTR)TRUE;


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

}

 

 

//效果图：