Hello，
When I joined the lines using the draw function in emWin, I noticed that there were some small spikes at the joints, as shown in the figure. Is there any way I can eliminate them? Does the GUI_DrawGraph interface in the manual allow you to change the size of a line? 
When drawing lines with GUI_Draw_AA_Line, spikes appear at the joints
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Hi,
This is most likely because the lines do overlap each other. Unfortunately, there is no way to avoid it.
You might try the SPLINE drawing operations:
https://www.segger.com/doc/UM03001_em…Drawing_splines
https://wiki.segger.com/Spline_(Sample)Regards,
Sven -
create a SPLINE object in a dialog box and fill it wit data. I draw it in WM PAINT message. This is part of my source code.
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