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Hi Sven, thank you for the fast reply. I already downgrade my emWin version to 5.36.6 where everything works as expected. I also tried your bugfix but it didn't work for me. I tried: C Source Code (5 lines) and C Source Code (6 lines) For the future is there a published list of known bugs for emWin? Many Thanks, Jonathan

I suggest to handle this problem independently from each other. First of all create a framebuffer in an external memory and configure your external memory controller in the STM chip. Write some memory test routines to test if memory is interfaced correctly. Then use a memcpy cmd to fill the entire memory with a color (not black). Afterwards configure the display controller to interface your display until the display shows the color you expect. The display datasheet should contain all the paramet…

Hi everyone, I use the Keil Middleware with emWin. The last days I updated to version 5.42.9 and now all my LISTBOX widgets have a transparent background. I use a custom skin. What can cause this behaviour? Here is my relevant code. C Source Code (1 line) C Source Code (2 lines) C Source Code (18 lines) C Source Code (49 lines) Here are some screenshots of the device picload.org/view/ddidcdra/edit.jpg.html picload.org/view/ddidcdrl/editbright.jpg.html