This function is in 746 Discovery template directory. I can't get anything to screen.
How do you know it's not on the screen? Which layer are you drawing on? Which layer is visible? What is the transparency level? Are you drawing black letters on a black screen?
I don't own this board so I have no first-hand knowledge of it.
I had the same issue...I found the following link very useful
stm32f429disco-lwext4/hw_init.c at master · gkostka/stm32f429disco-lwext4 · GitHub
Note: I'm not the owner of such, but i found it while googling for a clue
In general, you need to do these steps before drawing anything to the LCD:
Retrieving data ...