win32 opengl画线

#include "stdafx.h"
#include "Win32Project1.h"
#include "glut.h"

#define MAX_LOADSTRING 100

// 全局变量:
HINSTANCE hInst;								// 当前实例
HWND hWnd;
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_WIN32PROJECT1, 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_WIN32PROJECT1));

///////////////////////////////////////////
HDC hdc = GetDC(hWnd);
PIXELFORMATDESCRIPTOR pdf;//选取opengl渲染的像素格式
memset(&pdf, 0, sizeof(PIXELFORMATDESCRIPTOR));
pdf.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pdf.nVersion = 1;
pdf.cColorBits = 32;//颜色缓冲区。RGBA
pdf.cDepthBits = 24;//深度缓冲区
pdf.cStencilBits = 8;
pdf.iPixelType = PFD_TYPE_RGBA; //像素个数
pdf.iLayerType = PFD_MAIN_PLANE;//
pdf.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER/*双缓冲*/;

//将opengl与HDC绑定
int nPixformat = ChoosePixelFormat(hdc, &pdf);
SetPixelFormat(hdc, nPixformat, &pdf);

HGLRC rc = wglCreateContext(hdc);
wglMakeCurrent(hdc, rc);//当前的渲染设备

glMatrixMode(GL_PROJECTION);//选择投影模式
gluPerspective(50, 800 / 600, 0.1f, 1000.0f);//设置投影矩阵参数
glMatrixMode(GL_MODELVIEW);//将投影矩阵转换成显示屏坐标
glLoadIdentity();

glClearColor(1.0, 0.0, 0.0, 0.0);
// 主消息循环:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}

glClear(GL_COLOR_BUFFER_BIT);//清除背景颜色
glColor4ub(255.0, 255.0, 255.0, 255.0);//设置点的颜色。

glPointSize(20.0f);//设置点的大小
glBegin(GL_POINTS);//
glVertex3f(0.0f, 0.0f, -0.5f);//顶点
glEnd();

glLineWidth(5.0);
glBegin(GL_LINE_LOOP);
glColor4ub(255.0, 0.0, 0.0, 255.0);//设置当前点的颜色。
glVertex3f(0.0, 0.0, -10.0f);
glColor4ub(0.0, 255.0, 0.0, 255.0);//设置当前点的颜色。
glVertex3f(-5.0f, 0.0, -10.0f);
glColor4ub(0.0, 0.0, 255.0, 255.0);//设置当前点的颜色。
glVertex3f(-0.0f, -5.0, -10.0f);
glEnd();
//glClearColor(1.0, 0.0, 0.0, 0.0);
SwapBuffers(hdc);
}

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_WIN32PROJECT1));
wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_WIN32PROJECT1);
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)
{
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_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;
}

在Win32程序中，使用到gluPerspective，而这个函数需要glut.h。故需要配置相关环境。

demo：http://download.csdn.net/detail/sz76211822/9757867