I would like to load opengl32.dll at runtime (using LoadLibrary from Win32) and then load OpenGL2/3/4 functions. I tried to use glew for that, but it can't resolve some wgl functions.
So is there an easy way I can use glew to import OpenGL functionalities while loading opengl dynamically ?
It is possible to do what you are asking for, but you will have to go about it differently. Typically, when a shared library (or dll) is manually loaded at runtime, you will have to search, by symbol, for the functions you want to use and assign them to handles so you can call them.
What you are doing now will never compile because you are explicitly using symbol names that the linker cannot find. You have to replace all of these unresolved function calls with queries into your manually loaded shared library (opengl32.dll).
There's some good code you can use for reference in the glfw project. Take a look at both the
_glfwInitWGLandloadWGLExtensionsfunctions.