This function makes the specified window visible if it was previously hidden. If the window is already visible or is in full screen mode, this function does nothing.
By default, windowed mode windows are focused when shown Set the GLFW_FOCUS_ON_SHOW window hint to change this behavior for all newly created windows, or change the behavior for an existing window with glfwSetWindowAttrib.
This function makes the specified window visible if it was previously hidden. If the window is already visible or is in full screen mode, this function does nothing.
By default, windowed mode windows are focused when shown Set the GLFW_FOCUS_ON_SHOW window hint to change this behavior for all newly created windows, or change the behavior for an existing window with glfwSetWindowAttrib.