hButton = BUTTON_Create(110, 110, 200,100, GUI_ID_OK, WM_CF_SHOW);
Important: I have made my PCB using stm32f429ii as the LCD controller, a LCD 7’’ screen with 800*480pixels and a 256Mbits SDRAM for memory.
With the same code and same LCD screen in the Discovery kit STM32F42x9I-Eval it works, but not with my card. In my card the button doesn’t appear. Meanwhile, I can display text, images. But I can’t display all the widgets.
The only difference between the Discovery kit and my electronic board is the memory SDRAM. But it seems to work well because I can write/read this SDRAM, and performed memory test.
What may be the reason? How can I do?