selfImDrawList handle on which this method operates.
p2Bezier control point p2 in absolute screen coordinates.
p3Bezier control point p3 in absolute screen coordinates.
p4Bezier end point p4 in absolute screen coordinates.
num_segmentsCurve tessellation segment count; 0 lets ImGui choose automatically.
Append a cubic Bezier segment from the current path endpoint without stroking it.