Why glGenVertexArray()gives access violation error?

[hsunteik]

My old error,the NullFunctionError is solved by creating a opengl context before calling the opengl function,but now I get a new error,that is the access violation writing to location error and is caused by the same function ,the glGenVertexArray function.

1)what is happening?

2)how do I fix it?

3) is the difference between 'vao=glGenVertexArray(1)' and glGenVertexArray(1,vbo)

my code here

[Larz60+]

Don't you think it might be a bit helpful to show some code?

[hsunteik]

The whole program is quite long,and i dont know which part causes the problem.
The only thing i know is the main cause of this error is using GL.glGenVertexArrays.
i will try my best to extract the error part of the code or recreate the problem and post it here only around next week ,because i cant program during weekday because of school.
At the mean time,can anyone answer the third question first?
3)are there difference between 'vao=glGenVertexArray(1)' and glGenVertexArray(1,vao)

[Mekire]

I haven't touched this or openGL in ages so you are out of luck on details, but I successfully used this function here:
https://github.com/Mekire/gltut-pygame/b...anually.py

are there difference between 'vao=glGenVertexArray(1)' and glGenVertexArray(1,vao)

The second one looks like it is from the C version as you presumably pass it a struct pointer to populate.  The first version is the one you should be using.

[hsunteik]

are there difference between 'vao=glGenVertexArray(1)' and glGenVertexArray(1,vao)

The second one looks like it is from the C version as you presumably pass it a struct pointer to populate.  The first version is the one you should be using.

In your opinion,Could this be the cause of my access violation error?