How to select the icon of LCD from external switch of stm32L431 GPIO

[miker]

i build a LCD display board with stm32L431 and 320*240 LCD  and use touchGFX to develop UI, now i need control and select icon of LCD from external GPIO of STM32L431 , so, how to configure the touchGFX and concerned file ? anybody have similar program to refer ? 

[mathiasmarkussen]

Hello,

You can take inspiration from one of the board specific demos provided with TouchGFX designer. The ones that are outlined in my screenshot should have some state changed by a GPIO, either by sampling the GPIO, or through an external interrupt.