Windows OpenGL 初始模板

// WindowsOpengl33.cpp : 定义应用程序的入口点。
//
#define WIN32_LEAN_AND_MEAN
#include "stdafx.h"
#include "WindowsOpengl33.h"
#include <Windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glaux.h>

float angle = 0.0f;
HDC g_HDC;
bool fullScreen = false;
//为设备环境设置像素格式的函数
void SetupPixelFormat(HDC hDC)
{
 int nPixelFormat;
 static PIXELFORMATDESCRIPTOR pfd = {
  sizeof(PIXELFORMATDESCRIPTOR),
  1,
  PFD_DRAW_TO_WINDOW |
  PFD_SUPPORT_OPENGL |
  PFD_DOUBLEBUFFER,
  PFD_TYPE_RGBA,
  32,
  0, 0, 0, 0, 0, 0,
  0,
  0,
  0,
  0, 0, 0, 0,
  16,
  0,
  0,
  PFD_MAIN_PLANE,
  0,
  0, 0, 0
 };
 nPixelFormat = ChoosePixelFormat(hDC, &pfd);
 SetPixelFormat(hDC, nPixelFormat, &pfd);
}
// 此代码模块中包含的函数的前向声明:
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR lpCmdLine,
                     int nShowCmd)
{
 WNDCLAS*** windowClass;
 HWND hwnd;
 MSG msg;
 bool done;
 DWORD dwExStyle;
 DWORD dwStyle;
 RECT windowRect;
 int width = 800;
 int height = 600;
 int bits = 32;
 windowRect.left = (long)0;
 windowRect.right = (long)width;
 windowRect.top = (long)0;
 windowRect.bottom = (long)height;

 windowClass.cbSize = sizeof(WNDCLAS***);
 windowClass.style = CS_HREDRAW | CS_VREDRAW;
 windowClass.lpfnWndProc = WndProc;
 windowClass.cbCl***tra = 0;
 windowClass.cbWndExtra = 0;
 windowClass.hInstance = hInstance;
 windowClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 windowClass.hCursor = LoadCursor(NULL, IDC_ARROW);
 windowClass.hbrBackground = NULL;
 windowClass.lpszMenuName = NULL;
 windowClass.lpszClassName = "MyClass";
 windowClass.hIconSm = LoadIcon(NULL, IDI_WINLOGO);
 if(!RegisterClas***(&windowClass))
  return 0;
 if(fullScreen)
 {
  DEVMODE dmScreenSettings;
  memset(&dmScreenSettings, 0, sizeof(dmScreenSettings));
  dmScreenSettings.dmSize = sizeof(dmScreenSettings);
  dmScreenSettings.dmPelsWidth = width;
  dmScreenSettings.dmPelsHeight = height;
  dmScreenSettings.dmBitsPerPel = bits;
  dmScreenSettings.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
  if(ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN) !=
               DISP_CHANGE_SUCCESSFUL)
  {
   MessageBox(NULL, "Display mode failed", NULL, MB_OK);
   fullScreen = false;
  }
 }
 if(fullScreen)
 {
  dwExStyle = WS_EX_APPWINDOW;
  dwStyle = WS_POPUP;
  ShowCursor(false);
 }
 else
 {
  dwExStyle = NULL;
  dwStyle = WS_OVERLAPPEDWINDOW | WS_VISIBLE | WS_SYSMENU | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
 }
 AdjustWindowRectEx(&windowRect, dwStyle, FALSE, dwExStyle);
 hwnd = CreateWindowEx(NULL,
      "MyClass",
      "The OpenGl Window Application",
      WS_OVERLAPPEDWINDOW | WS_VISIBLE |
      WS_SYSMENU | WS_CLIPCHILDREN |
      WS_CLIPSIBLINGS,
      0, 0,
      windowRect.right - windowRect.left,
      windowRect.bottom - windowRect.top,
      NULL,
      NULL,
      hInstance,
      NULL);
 if(!hwnd)
  return 0;
 ShowWindow(hwnd, SW_SHOW);
 UpdateWindow(hwnd);
 done = false;
 while(!done)
 {
  PeekMessage(&msg, hwnd, NULL, NULL, PM_REMOVE);
  if(msg.message == WM_QUIT)
  {
   done = true;
  }
  else //.....Draw......//
       //1.创建RC、关联RC与DC.....................................WM_CREATE 中进行设置
       //2.做具体的绘图工作 myDrawScene().........................以下将进行
       //3.SwapBuffers(m_pDC->m_hDC) 把RC绘制的传到当前的DC上......以下将进行
       //4.释放RC，以便其他的DC使用................................WM_CLOSE 中进行设置
  {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   glLoadIdentity();
   angle += 0.1f;
   if(angle >= 360.0f)
    angle = 0.0f;
   glTranslatef(0.0f, 0.0f, -5.0f);
   glRotatef(angle, 0.0f, 0.0f, 1.0f);
   glColor3f(1.0f, 1.0f, 0.0f);
   glBegin(GL_TRIANGLES);
    glVertex3f(0.0f, 0.0f, 0.0f);
    glVertex3f(1.0f, 0.0f, 0.0f);
    glVertex3f(1.0f, 1.0f, 0.0f);
   glEnd();
   SwapBuffers(g_HDC);
   TranslateMessage(&msg);
   DispatchMessage(&msg);
  }
 }
 if(fullScreen)
 {
  ChangeDisplaySettings(NULL, 0);
  ShowCursor(true);
 }
 return msg.wParam;
}

// 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)
{
 static HGLRC hRC;
 static HDC hDC;
 char string[] = "hello world!";
 int width, height;
 switch (message)
 {
 case WM_CREATE:
  hDC = GetDC(hWnd);
  g_HDC = hDC;
  SetupPixelFormat(hDC);
  hRC = wglCreateContext(hDC); //创建RC
  wglMakeCurrent(hDC, hRC); //关联RC
  return 0;
  break;
 case WM_CLOSE:
  wglMakeCurrent(hDC, NULL); //释放与hDC对应的RC
  wglDeleteContext(hRC); //删除RC
  PostQuitMessage(0);
  return 0;
  break;
 case WM_SIZE:
  height = HIWORD(lParam);
  width = LOWORD(lParam);
  if(height == 0)
   height = 1;
  glViewport(0, 0, width, height);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  //计算窗口尺寸比例
  gluPerspective(45.0f, (GLfloat)width/(GLfloat)height, 1.0f ,1000.0f);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
  return 0;
  break;
 default:
  break;
 }
 return(DefWindowProc(hWnd, message, wParam, lParam));
}