House

#include <windows.h>
#include <gl/gl.h>

LRESULT CALLBACK WindowProc(HWND, UINT, WPARAM, LPARAM);
void EnableOpenGL(HWND hwnd, HDC*, HGLRC*);
void DisableOpenGL(HWND, HDC, HGLRC);


int WINAPI WinMain(HINSTANCE hInstance,
                   HINSTANCE hPrevInstance,
                   LPSTR lpCmdLine,
                   int nCmdShow)
{
    WNDCLASSEX wcex;
    HWND hwnd;
    HDC hDC;
    HGLRC hRC;
    MSG msg;
    BOOL bQuit = FALSE;
    float theta = 0.0f;

    /* register window class */
    wcex.cbSize = sizeof(WNDCLASSEX);
    wcex.style = CS_OWNDC;
    wcex.lpfnWndProc = WindowProc;
    wcex.cbClsExtra = 0;
    wcex.cbWndExtra = 0;
    wcex.hInstance = hInstance;
    wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
    wcex.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
    wcex.lpszMenuName = NULL;
    wcex.lpszClassName = "GLSample";
    wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);;


    if (!RegisterClassEx(&wcex))
        return 0;

    /* create main window */
    hwnd = CreateWindowEx(0,
                          "GLSample",
                          "OpenGL Sample",
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT,
                          CW_USEDEFAULT,
                          256,
                          256,
                          NULL,
                          NULL,
                          hInstance,
                          NULL);

    ShowWindow(hwnd, nCmdShow);

    /* enable OpenGL for the window */
    EnableOpenGL(hwnd, &hDC, &hRC);

    /* program main loop */
    while (!bQuit)
    {
        /* check for messages */
        if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
        {
            /* handle or dispatch messages */
            if (msg.message == WM_QUIT)
            {
                bQuit = TRUE;
            }
            else
            {
                TranslateMessage(&msg);
                DispatchMessage(&msg);
            }
        }
        else
        {
            /* OpenGL animation code goes here */

            glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
            glClear(GL_COLOR_BUFFER_BIT);

            //glPushMatrix();
            //glRotatef(theta, 0.0f, 0.0f, 1.0f);

            glColor3f(1.0f, 1.0f, 1.0f);


            //polygon
            float a=0,b=0.90;
            glColor3f (1.0, 1.0, 0.0);
            glBegin(GL_POLYGON);
            glVertex2f(b,a);
            glVertex2f(b,-b);
            glVertex2f(-b,-b);
            glVertex2f(-b,a);
            glVertex2f(a,b);
            glEnd();
            //quad
            float x=0.20,y=0.10,z=0.80;
            glColor3f (0.0, 0.0, 0.0);
            glBegin(GL_QUADS);
            glVertex2f(x,-y);
            glVertex2f(x,-z);
            glVertex2f(z,-z);
            glVertex2f(z,-y);
            glEnd();
            //triangles
            float m=0.2,n=0.4,o=0.5,p=0.7;
            glColor3f (0.0, 0.0, 0.0);
            glBegin(GL_TRIANGLES);
            //triangle - 1
            glVertex2f(-p,-m);
            glVertex2f(-o,-m);
            glVertex2f(-o,-n);
            //triangle - 2
            glVertex2d(-o,-n);
            glVertex2d(-p,-n);
            glVertex2d(-p,-m);
            glEnd();
            glTranslatef(0,0.0005,0);
            //glTranslatef(0,-0.0005,0);

            //glPopMatrix();

            SwapBuffers(hDC);

            //theta += 1.0f;
            //Sleep (1);
            glFlush();
        }
    }

    /* shutdown OpenGL */
    DisableOpenGL(hwnd, hDC, hRC);

    /* destroy the window explicitly */
    DestroyWindow(hwnd);

    return msg.wParam;
}



LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
    /*
    case GLUT_KEY_DOWN:
    //do something here
    glTranslatef(0,-0.0005,0);
    break;
    */
    case 's':
        break;
    case VK_UP:
        break;
    case VK_DOWN:
        break;
    case VK_LEFT:
        break;
    case VK_RIGHT:
        break;

        glTranslatef(0,-0.0005,0);
        break;

    case WM_CLOSE:
        PostQuitMessage(0);
        break;

    case WM_DESTROY:
        return 0;

    case WM_KEYDOWN:
    {
        switch (wParam)
        {
        case VK_ESCAPE:
            PostQuitMessage(0);
            break;
        }
    }
    break;

    default:
        return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }

    return 0;
}

void EnableOpenGL(HWND hwnd, HDC* hDC, HGLRC* hRC)
{
    PIXELFORMATDESCRIPTOR pfd;

    int iFormat;

    /* get the device context (DC) */
    *hDC = GetDC(hwnd);

    /* set the pixel format for the DC */
    ZeroMemory(&pfd, sizeof(pfd));

    pfd.nSize = sizeof(pfd);
    pfd.nVersion = 1;
    pfd.dwFlags = PFD_DRAW_TO_WINDOW |
                  PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
    pfd.iPixelType = PFD_TYPE_RGBA;
    pfd.cColorBits = 24;
    pfd.cDepthBits = 16;
    pfd.iLayerType = PFD_MAIN_PLANE;

    iFormat = ChoosePixelFormat(*hDC, &pfd);

    SetPixelFormat(*hDC, iFormat, &pfd);

    /* create and enable the render context (RC) */
    *hRC = wglCreateContext(*hDC);

    wglMakeCurrent(*hDC, *hRC);
}

void DisableOpenGL (HWND hwnd, HDC hDC, HGLRC hRC)
{
    wglMakeCurrent(NULL, NULL);
    wglDeleteContext(hRC);
    ReleaseDC(hwnd, hDC);
}