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?

Hi,

After trying to draw with SPLINE, the waveform data obtained is still not very satisfactory. This is a rendering using SPLINE. Is there any way I can eliminate the jagged center?

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.