Qt with OpenGL 3.3

[kaszewczyk]

Hello
I'm learning OpenGL 3.3 with Qt 4.8 and I have a problem to run my application
I have created class called Mesh where i use some OpenGL functions from glew library code looks like this:

void Mesh::compile()
{
    glGenBuffers(1, &this->vbo);
    glBindBuffer(GL_ARRAY_BUFFER, this->vbo);
    glBufferData(GL_ARRAY_BUFFER, sizeof(this->vertexs), vertexs, GL_STATIC_DRAW);
    glBindBuffer(GL_ARRAY_BUFFER, 0);
}

void Mesh::compile()
{
    glGenBuffers(1, &this->vbo);
    glBindBuffer(GL_ARRAY_BUFFER, this->vbo);
    glBufferData(GL_ARRAY_BUFFER, sizeof(this->vertexs), vertexs, GL_STATIC_DRAW);
    glBindBuffer(GL_ARRAY_BUFFER, 0);
}

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My application crash on the line "glGenBuffers(1, &this->vbo);" with message "The program stopped working unexpectedly."

My pro file look like this

QT       += core gui opengl
 
TARGET = GLSL
TEMPLATE = app
 
 
SOURCES += main.cpp\
        glwidget.cpp \
    mesh.cpp
 
HEADERS  += glwidget.h \
    mesh.h
 
FORMS    += glwidget.ui
 
CONFIG += glew
 
unix|win32: LIBS += -lGLEW

QT       += core gui opengl

TARGET = GLSL
TEMPLATE = app


SOURCES += main.cpp\
        glwidget.cpp \
    mesh.cpp

HEADERS  += glwidget.h \
    mesh.h

FORMS    += glwidget.ui

CONFIG += glew

unix|win32: LIBS += -lGLEW

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Can someone help me please ?

--------EDIT

I solve this problem out.

To use OpenGL 3.3 with Qt please follow these steps

• add to ur .pro file line

  unix|win32: LIBS += -lGLEW

  unix|win32: LIBS += -lGLEW

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• add this code in ur QGLWidget initializeGL method

  makeCurrent();
   glewExperimental = GL_TRUE;
   int glewErr = glewInit();
   if( glewErr != GLEW_OK )
   {
      qDebug("Error %s", glewGetErrorString(glewErr) ) ;
   }

  makeCurrent();
   glewExperimental = GL_TRUE;
   int glewErr = glewInit();
   if( glewErr != GLEW_OK )
   {
      qDebug("Error %s", glewGetErrorString(glewErr) ) ;
   }

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[juzzlin]

Thanks for posting the solution! I just experienced this same problem