Create an OpenGL Class Based on the MFC dialog box

Today I wrote an OpenGL Class Based on the MFC dialog box: COpenGL, which can be used in the dialog box program. It also provides two functions for full-screen and non-full-screen conversion, which are easy to use and fast.

Usage: Add a Static control (or others) to the dialog box, and add the following code in OnInitDialog () (assuming that the Control ID is IDC_OPENGL, m_openGL is a COpenGL-class object):

Code: CRect rect;

GetDlgItem (IDC_OPENGL)-> GetWindowRect (rect );

ScreenToClient (rect );

M_openGL.Create (rect, this );

Then call m_openGL.RenderGLScene () in the appropriate place.

The following is the class code (OpenGL. h and OpenGL. cpp ):

Code: # if! Defined (afx_opengl_h000038b5d1c8_2dff_4a7d_9a99_3ac401c19d7200000000ded _)

# Define afx_opengl_h000038b5d1c8_2dff_4a7d_9a99_3ac401c19d7200000000ded _

# If _ MSC_VER> 1000

# Pragma once

# Endif // _ MSC_VER> 1000

// OpenGL. h: header file

//

//////////////////////////////////////// /////////////////////////////////////

// COpenGL window

Class COpenGL: public CWnd

{

// Construction

Public:

COpenGL ();

// Attributes

Public:

// Operations

Public:

// Overrides

// ClassWizard generated virtual function overrides

// {AFX_VIRTUAL (COpenGL)

//} AFX_VIRTUAL

// Implementation

Public:

BOOL SetNormScreen ();

BOOL SetFullScreen (int width, int height, int depth );

Virtual void RenderGLScene ();

Void Create (CRect rect, CWnd * parent );

Virtual ~ COpenGL ();

// Generated message map functions

Protected:

CRect m_rect;

CWnd * m_parent;

BOOL m_bFullScreen;

DEVMODE m_DMsaved;

BOOL m_bInit;

Int InitGL ();

Void KillGLWindow ();

HDC m_hDC;

HGLRC m_hRC;

// {AFX_MSG (COpenGL)

Afx_msg int OnCreate (maid );

Afx_msg void OnPaint ();

Afx_msg void OnSize (UINT nType, int cx, int cy );

//} AFX_MSG

DECLARE_MESSAGE_MAP ()

};

//////////////////////////////////////// /////////////////////////////////////

// {AFX_INSERT_LOCATION }}

// Microsoft Visual C ++ will insert additional declarations immediately before the previous line.

# Endif //! Defined (afx_opengl_h000038b5d1c8_2dff_4a7d_9a99_3ac401c19d7200000000ded _)

Code: // OpenGL. cpp: implementation file

//

# Include "stdafx. h"

# Include "DialogOpenGL. h"

# Include "OpenGL. h"

# Include <gl/gl. h>

# Include <gl/glu. h>

# Ifdef _ DEBUG

# Define new DEBUG_NEW

# Undef THIS_FILE

Static char THIS_FILE [] = _ FILE __;

# Endif

//////////////////////////////////////// /////////////////////////////////////

// COpenGL

COpenGL: COpenGL (): m_bInit (FALSE), m_bFullScreen (FALSE ),

M_hDC (NULL), m_hRC (NULL), m_parent (NULL)

{

}

COpenGL ::~ COpenGL ()

{

KillGLWindow (); // Shutdown

}

BEGIN_MESSAGE_MAP (COpenGL, CWnd)

// {AFX_MSG_MAP (COpenGL)

ON_WM_CREATE ()

ON_WM_PAINT ()

ON_WM_SIZE ()

ON_WM_KEYDOWN ()

//} AFX_MSG_MAP

END_MESSAGE_MAP ()

//////////////////////////////////////// /////////////////////////////////////

// COpenGL message handlers

Void COpenGL: Create (CRect rect, CWnd * parent)

{

If (m_bInit) return;

ASSERT (rect );

ASSERT (parent );

M_rect = rect;

M_parent = parent;

CString className = AfxRegisterWndClass (

CS_HREDRAW | CS_VREDRAW | CS_OWNDC, NULL, (HBRUSH) GetStockObject (BLACK_BRUSH), NULL );

CreateEx (0, className, "OpenGL", WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, rect, parent, 0 );

}

Int COpenGL: OnCreate (maid)

{

If (CWnd: OnCreate (lpCreateStruct) =-1)

Return-1;

// TODO: Add your specialized creation code here

EnumDisplaySettings (NULL, ENUM_CURRENT_SETTINGS, & m_DMsaved );

GLuint PixelFormat; // The Results After Searching For A Match

Static PIXELFORMATDESCRIPTOR pfd = // pfd Tells Windows How We Want Things To Be

{

Sizeof (PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor

1, // Version Number

PFD_DRAW_TO_WINDOW | // Format Must Support Window

PFD_SUPPORT_OPENGL | // Format Must Support OpenGL

PFD_DOUBLEBUFFER, // Must Support Double Buffering

PFD_TYPE_RGBA, // Request An RGBA Format

M_DMsaved.dmBitsPerPel, // Select Our Color Depth

0, 0, 0, 0, 0, 0, // Color Bits Ignored

0, // No Alpha Buffer