There is no actual output functions for STM32F746 Discovery LCD. I was searching for a way to print some text the screen and may be display an image. But I can't see such things in Cube output. I was looking for a function like:
HAL_StatusTypeDef HAL_LCD_IMG(LCD_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
There is an example, but it is of little use. It shows configuring the LCD peripheral, and I want to show some text.