OpenCasCade(OCC) Chinese display

Problem description
Normal Chinese characters in OpenCasCade cannot be displayed. After referring to eryar's blog OpenCascade Chinese Text Rendering, I found that the previous version can add Resource_Unicode::ConvertGBToUnicode() to the VDrawText function in OCCT. This command can be implemented. In version 7.2, the prototype The function has undergone great changes. Following this idea, this function is implemented in AIS_LabelText.

Code

    TCollection_ExtendedString tostr;
	Standard_CString str= "OpenCasCade 你好啊";
	Resource_Unicode::ConvertGBToUnicode(str,tostr);
	Handle(AIS_TextLabel) aLabel = new AIS_TextLabel();
	aLabel -> SetText(tostr);
	aLabel -> SetColor(Quantity_NOC_RED);
	aLabel -> SetFont("SimHei");//一定要设置合适的字体，不然不能实现功能
	Handle(AIS_InteractiveContext) myAISContext = GetDocument()->GetIC();
	myAISContext->Display(aLabel,Standard_False);

Effect display