VS2013 using MFC to make OpenGL programs containing menus

Open VS2013 New Project MFC program: named: Mfcopengldemo

Click OK next to build a dialog-based program

Click Finish:

Add a resource to a resource View menu

Then add a variable of type protected in MFCOpenGLDemo.h:

CMenu M_menu;

Add in the MFCOpenGLDemo.cpp file bool Cmfcopengldemodlg::oninitdialog () function

M_menu.loadmenu (IDR_MENU1);
SetMenu (&m_menu);

Then add a new dialog box:

Name the rectangle, change the ID to Idd_rect, and add a class to it rect.h

Change the contents of a rect.h

Class Rect:public CDialogEx
{
Declare_dynamic (Rect)


Public
Rect (cwnd* pparent = NULL); Standard constructors
Virtual ~rect ();


dialog box data
enum {IDD = Idd_rect};


Protected

Hicon M_hicon;
HGLRC HRC;
HDC hdc;

virtual void DoDataExchange (cdataexchange* pDX); DDX/DDV Support
void Drawfunc (); //Drawing
void Changedrawwinsize (); //Change window for large hours


Declare_message_map ()
Public
afx_msg void OnSize (UINT nType, int cx, int cy);
afx_msg void OnDestroy ();
afx_msg void OnPaint ();
Virtual BOOL OnInitDialog ();
afx_msg void OnTimer (Uint_ptr nidevent);
afx_msg void OnClose ();
afx_msg hcursor Onquerydragicon ();
};

Can be added with the Class wizard using the Class Wizard;

Include header files in the Rect.cpp file # include "Gl\glut.h"

Change the following code

Line::line (cwnd* pparent/*=null*/)
: CDialogEx (Line::idd, pparent)
{
M_hicon = AfxGetApp ()->loadicon (IDR_MAINFRAME);
}


Line::~line ()
{
}


void line::D odataexchange (cdataexchange* PDX)
{
CDialogEx::D odataexchange (PDX);
}




Begin_message_map (line, CDialogEx)
On_wm_close ()
On_wm_size ()
On_wm_paint ()
On_wm_querydragicon ()
On_wm_timer ()
End_message_map ()




Line Message Processing program




void Line::onclose ()
{
TODO: Add Message Handler code and/or call default values here
KillTimer (1);
Cdialogex::onclose ();
}




void Line::onsize (UINT nType, int cx, int cy)
{
Cdialogex::onsize (NType, CX, CY);
Changedrawwinsize ();
TODO: Add Message Handler code here
}


Hcursor Line::onquerydragicon ()
{
TODO: Add Message Handler code and/or call default values here


return Cdialogex::onquerydragicon ();
}




void Line::ontimer (Uint_ptr nidevent)
{
TODO: Add Message Handler code and/or call default values here
Drawfunc ();
Cdialogex::ontimer (nidevent);
}


BOOL Line::oninitdialog ()
{
Cdialogex::oninitdialog ();


TODO: Add additional initialization here
SetIcon (M_hicon, TRUE); Set Large Icons
SetIcon (M_hicon, FALSE); Set Small Icons


/****************************************************************/
Set the pixel format in OnInitDialog and select this format in the DC
Static Pixelformatdescriptor PFD = {sizeof (pixelformatdescriptor),
1,
Pfd_draw_to_window |
Pfd_support_opengl |
Pfd_doublebuffer,
Pfd_type_rgba,
24,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
32,
0,
0,
Pfd_main_plane,
0,
0, 0, 0
};
int PixelFormat;
HDC =:: GetDC (This->getsafehwnd ());
if (! ( PixelFormat = Choosepixelformat (HDC, &PFD)))
{
MessageBox (L "Choosepixelformat failed!");
return false;
}
if (! Setpixelformat (HDC, PixelFormat, &PFD))
{
MessageBox (L "Setpixelformat failed!");
return false;
}
if (! ( HRC = Wglcreatecontext (HDC)))
{
MessageBox (L "Createcontext failed!");
return false;
}
if (!wglmakecurrent (HDC, HRC))
{
MessageBox (L "Makecurrent failed!");
return false;
}


Changedrawwinsize ();


SetTimer (1, +, NULL); Use a timer (the simplest way)
/****************************************************************/




return TRUE; Return TRUE unless you set the focus to a control
Exception: OCX property page should return FALSE
}


void Line::changedrawwinsize ()
{
CRect rect; Draw in this rectangle
GetClientRect (rect);
Draw area occupies entire window size
Glviewport (0, 0, rect. Width (), Rect. Height ());
Glmatrixmode (gl_projection);
Glloadidentity ();
Gluperspective (45.0f, rect. Width ()/rect. Height (), 0.1f, 100.0f);//calculate the appearance ratio of the window */
Gluperspective (45.0f, 640/480, 0.1f, 100.0f);//calculate the appearance ratio of the window
Glmatrixmode (Gl_modelview);
Glloadidentity ();
Glclearcolor (0.0f, 0.0f, 0.0f, 1.0f);
Glcleardepth (1.0f);
Glenable (gl_depth_test);
}




void Line::onpaint ()
{
CPAINTDC DC (this); Device context for painting
TODO: Add Message Handler code here
Do not call Cdialogex::onpaint () for a drawing message
if (Isiconic ())
{
CPAINTDC DC (this); Device context for drawing


SendMessage (Wm_iconerasebkgnd, Reinterpret_cast<wparam> (DC). GETSAFEHDC ()), 0);


Center the icon in the workspace rectangle
int cxicon = GetSystemMetrics (Sm_cxicon);
int cyicon = GetSystemMetrics (Sm_cyicon);
CRect rect;
GetClientRect (&rect);
int x = (rect. Width ()-Cxicon + 1)/2;
int y = (rect. Height ()-Cyicon + 1)/2;


Draw icon
dc. DrawIcon (x, y, M_hicon);
}
Else
{
Cdialogex::onpaint ();
}
}




void line::D rawfunc ()//function specific implementation
{
Glclear (Gl_color_buffer_bit | Gl_depth_buffer_bit);
Glloadidentity ();
Gltranslatef (0.0f, 0.0f, -3.0f);


Glbegin (gl_quads); Draw a square
GLTEXCOORD2F (0.0, 1.0); Texture on top left
glvertex3f ( -1.0f, 1.0f, 0.0f); Quadrilateral left Upper


GLTEXCOORD2F (1.0, 1.0); Texture on top Right
glvertex3f (1.0f, 1.0f, 0.0f); Top Right


GLTEXCOORD2F (1.0, 0.0); Texture bottom Right
glvertex3f (1.0f, -1.0f, 0.0f); Lower right


GLTEXCOORD2F (0.0, 0.0); Texture bottom Left
glvertex3f ( -1.0f, -1.0f, 0.0f); Lower left


Glend ();


Swapbuffers (HDC); With double buffering
}

Then add message handling for the Rectangle menu in the menu in Resource View

void Cmfcopengldemodlg::onrect ()
{
TODO: Add Command handler code here
Rect mrect;
Mrect.domodal ();
}

Then run the click Paint, and the rectangle will show the result.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

VS2013 using MFC to make OpenGL programs containing menus