How add QOpenGLWidget to qt5 bindings ?

Render OpenGL need override few virtual functions: initializeGL and paintGL.

How implement virtual functions ?

m

It's not big problem to add QOpenGLxx to bindings but that's something I don't like. Qt5Pas should contain only base gui and widgets, maybe create separate Qt5PasOpenGL and qt5opengl.pas.
I've already added QSurface, QSurfaceType and QWindow classes which can be used for openGl

zeljko

I think about my needs, and I see that I do not need all QOpenGLx. Can you tell me how to create OpenGL context for windows or panel in Qt5 bindings ?
I'll ask some more crumbs ;)

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Really don't know :) Never played with OpenGL. Try to instantiate QApplication, create QWindow and via it's QSurfaceType set to OpenGL .. and see what happens :)

zeljko

For OpenGL we need "QOpenGLContext" only ;)

All function glXX are from "GL/gl.h"

Sample application in QT

////////////////////////////////////////////////////////////
//////////////// main.cpp
#include<QApplication>
#include<QWindow >
#include<QOpenGLContext >
//#include <QOpenGLFunctions>
#include<GL/gl.h >//

intmain(intargc,char*argv[])

{

QApplicationa(argc,argv);
QWindow*embed;
embed=newQWindow;
embed->setSurfaceType(QWindow::OpenGLSurface);
embed->setGeometry(QRect(50,50,640,480));
embed->setVisible(true);
QOpenGLContext*m_context;
m_context=newQOpenGLContext();
m_context->create();
m_context->makeCurrent(embed);
// <QOpenGLFunctions> version
//QOpenGLFunctions *f = m_context->functions();
//f->glClearColor(1.0,0,0,1.0);
//f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// <GL/gl.h> VERSION
glClearColor(1.0,0,0,1.0);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
// Define shapes enclosed within a pair of glBegin and glEnd
glBegin(GL_QUADS);// Each set of 4 vertices form a quad
glColor3f(1.0f,0.0f,0.0f);// Red
glVertex2f(-0.8f,0.1f);// Define vertices in counter-clockwise (CCW) order
glVertex2f(-0.2f,0.1f);//  so that the normal (front-face) is facing you
glVertex2f(-0.2f,0.7f);
glVertex2f(-0.8f,0.7f);
glColor3f(0.0f,1.0f,0.0f);// Green
glVertex2f(-0.7f,-0.6f);
glVertex2f(-0.1f,-0.6f);
glVertex2f(-0.1f,0.0f);
glVertex2f(-0.7f,0.0f);
glColor3f(0.2f,0.2f,0.2f);// Dark Gray
glVertex2f(-0.9f,-0.7f);
glColor3f(1.0f,1.0f,1.0f);// White
glVertex2f(-0.5f,-0.7f);
glColor3f(0.2f,0.2f,0.2f);// Dark Gray
glVertex2f(-0.5f,-0.3f);
glColor3f(1.0f,1.0f,1.0f);// White
glVertex2f(-0.9f,-0.3f);
glEnd();
m_context->swapBuffers(embed);
returna.exec();

}

//////////////////////////////////////////////////////////// #------------------------------------------------- #
#ProjectcreatedbyQtCreator2017-05-26T18:32:13
#
#------------------------------------------------- QT+=coregui
LIBS+=-lglut-lopengl32
greaterThan(QT_MAJOR_VERSION,4):QT+=widgets
TARGET=nienazwany1
TEMPLATE=app
SOURCES+=main.cpp

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Of course, but I'm not planning to add it to Qt5Pas bindings in any case. It can be created as standalone Qt5OpenGLPas lib and qt5opengl.pas, so used