Hi, Scuri Thanks for the update. It is working properly now. But, I have a issue of the initialization of the plot.
Every time, I have to resize the window to make the AXS_AUTOSCALEEQUAL and VIEWPORTSQUARE attributes take effect. Is there a way to make them work directly after the window initialization. I use the IupRedraw function at the end of the plotting. But the axis equal did not work until I resize the window. Best regards. -- Tao
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