For Bored Coders, 1 File Ogl/windows Program Isn't

Crono5

<div class="IPBDescription">Responding to messages, and I'm tired.</div> Keep in mind you'll need to include opengl32.lib and glu32.lib.

<!--c1--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>CODE</b> </td></tr><tr><td id='CODE'><!--ec1-->#define WIN32_LEAN_AND_MEAN
#define WIN32_EXTRA_LEAN
#include <windows.h>

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

int WindowWidth  = 800;
int WindowHeight = 600;
int WindowBPP  = 32;
bool Fullscreen  = false;
HDC hDC;
bool Loop = true;

void SetupPixelFormat(HDC hDC);
LRESULT CALLBACK WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
void SetupProjection(int Width, int Height);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
WNDCLASSEX WinClass;
HWND hWnd;
MSG msg;
DWORD ExStyle;
DWORD Style;
RECT WindowRect;

float angle;

WindowRect.left = (long)0;
WindowRect.right = (long)WindowWidth;
WindowRect.top = (long)0;
WindowRect.bottom = (long)WindowHeight;

WinClass.cbSize = sizeof(WNDCLASSEX);
WinClass.style = CS_HREDRAW | CS_VREDRAW;
WinClass.lpfnWndProc = WindowProc;
WinClass.cbClsExtra = 0;
WinClass.cbWndExtra = 0;
WinClass.hInstance = hInstance;
WinClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WinClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WinClass.hbrBackground = NULL;
WinClass.lpszMenuName = NULL;
WinClass.lpszClassName = "WinClass";
WinClass.hIconSm = WinClass.hIcon;

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

if(Fullscreen)
{
 DEVMODE ScreenSettings;
 ZeroMemory(&ScreenSettings, sizeof(ScreenSettings));
 ScreenSettings.dmSize = sizeof(ScreenSettings);
 ScreenSettings.dmPelsWidth = WindowWidth;
 ScreenSettings.dmPelsHeight = WindowHeight;
 ScreenSettings.dmBitsPerPel = WindowBPP;
 ScreenSettings.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;

 if(ChangeDisplaySettings(&ScreenSettings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
 {
  MessageBox(NULL, "Display mode failed", "Error", MB_ICONEXCLAMATION);
  Fullscreen = false;
 }

 if(Fullscreen)
 {
  ExStyle = WS_EX_APPWINDOW;
  Style = WS_POPUP;
  ShowCursor(FALSE);
 }
 else
 {
  ExStyle = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;
  Style = WS_OVERLAPPEDWINDOW;
 }
}

AdjustWindowRectEx(&WindowRect, Style, NULL, ExStyle);

hWnd = CreateWindowEx(NULL,
 "WinClass",
 "OpenGL Window",
 Style | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
 0, 0,
 WindowRect.right - WindowRect.left,
 WindowRect.bottom - WindowRect.top,
 NULL,
 NULL,
 hInstance,
 NULL);

hDC = GetDC(hWnd);
if(!hWnd)
 return 0;
 
ShowWindow(hWnd, SW_SHOW);
UpdateWindow(hWnd);

glClearColor(0.0, 0.0, 0.0, 0.0);
angle = 0.0f;

while(Loop == true)
{
 angle += 0.1f;

 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 glLoadIdentity();

 glTranslatef(0.0, 0.0, -5.0f);
 glRotatef(angle, 1.0f, 0.0f, 0.0f);
 glRotatef(angle, 0.0f, 1.0f, 0.0f);
 glRotatef(angle, 0.0f, 0.0f, 1.0f);

 glColor3f(0.7f, 1.0f, 0.3f);
 glBegin(GL_TRIANGLES);
  glVertex3f(1.0f, -1.0f, 0.0f);
  glVertex3f(-1.0f, -1.0f, 0.0f);
  glVertex3f(0.0f, 1.0f, 0.0f);
 glEnd();
 
 SwapBuffers(hDC);
 while(PeekMessage(&msg, hWnd, 0, 0, PM_NOREMOVE))
 {
  if(!GetMessage(&msg, hWnd, 0, 0))
  {
   Loop = false;
   break;
  }
  TranslateMessage(&msg);
  DispatchMessage(&msg);
 }
}

if(Fullscreen)
{
 ChangeDisplaySettings(NULL, 0);
 ShowCursor(TRUE);
}
return (int)msg.wParam;
}

void SetupPixelFormat(HDC hDC)
{
int PixelFormat;

PIXELFORMATDESCRIPTOR pfd =
{
 sizeof(PIXELFORMATDESCRIPTOR),
  1,
  PFD_SUPPORT_OPENGL |
  PFD_DRAW_TO_WINDOW |
  PFD_DOUBLEBUFFER   |
  PFD_TYPE_RGBA,
  32,
  0, 0, 0, 0, 0, 0,
  0,
  0,
  0,
  0,
  0, 0, 0, 0,
  16,
  0,
  0,
  PFD_MAIN_PLANE,
  0,
  0, 0, 0,
};

PixelFormat = ChoosePixelFormat(hDC, &pfd);
SetPixelFormat(hDC, PixelFormat, &pfd);
}

LRESULT CALLBACK WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static HDC hDC;
static HGLRC hRC;
int Height, Width;

switch(msg)
{
case WM_CREATE:
 hDC = GetDC(hWnd);
 SetupPixelFormat(hDC);
 hRC = wglCreateContext(hDC);
 wglMakeCurrent(hDC, hRC);
 break;

case WM_DESTROY:
case WM_QUIT:
case WM_CLOSE:
 wglMakeCurrent(hDC, NULL);
 wglDeleteContext(hRC);

 PostQuitMessage(0);
 break;

case WM_SIZE:
 Height = HIWORD(lParam);
 Width  = LOWORD(lParam);

 SetupProjection(Width, Height);

 break;

case WM_KEYDOWN:
 int Keys;
 LPARAM KeyData;
 Keys = (int)wParam;
 KeyData = lParam;

 switch(Keys)
 {
 case VK_ESCAPE:
  PostQuitMessage(0);
 default:
  break;
 }

 break;

default:
 break;

}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

void SetupProjection(int Width, int Height)
{
if(Height == 0)
 Height = 1;

glViewport(0, 0, Width, Height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(52.0f,(float)Width/(float)Height, 1.0f, 1000.0f);

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();

WindowWidth = Width;
WindowHeight= Height;
}<!--c2--></td></tr></table><div class='postcolor'><!--ec2-->

It'll compile, it just won't handle any messages. I know the answers in front of my face, but I just powertyped for ten/fifteen minutes and have about had it up to here.

/points finger up and out some

Oh, and yes, I know the design sucks, but the point was to just get everything working before I organize and put it all in classes and etcetera, etcetera...

Crono5

Okay, 1 day later, looking at it again, I've still got no idea why it's not working...

Help? Please?

Nil_IQ

Ask again in 4 years when i've finished this degree.

Gwahir

I've made a point of not learning the windows API

Swiftspear

I've made a point >

Crono5

<!--QuoteBegin-Gwahir+Oct 26 2004, 06:29 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (Gwahir @ Oct 26 2004, 06:29 PM)</td></tr><tr><td id='QUOTE'><!--QuoteEBegin--> I've made a point of not learning the windows API <!--QuoteEnd--> </td></tr></table><div class='postcolor'> <!--QuoteEEnd-->
So do you recommend GLUT, then?

Rue

I see a problem with this code








I can't read it <!--emo&:p--><img src='http://www.unknownworlds.com/forums/html//emoticons/tounge.gif' border='0' style='vertical-align:middle' alt='tounge.gif' /><!--endemo--> We learn windows APi next semester. Try me on some fandabidozie data structures they are fun <!--emo&???--><img src='http://www.unknownworlds.com/forums/html//emoticons/confused-fix.gif' border='0' style='vertical-align:middle' alt='confused-fix.gif' /><!--endemo-->

Crono5

You people learn this stuff in a class!?

EDIT: What school?