MQL5参考标准程序库3D图形CCanvas3DDXContext AmbientColorGetAmbientColorSetAttachCreateDestroyDXContextDXDispatcherInputSceneLightColorGetLightColorSetLightDirectionGetLightDirectionSetObjectAddProjectionMatrixGetProjectionMatrixSetRenderRenderBeginRenderEndViewMatrixGetViewMatrixSetViewPositionSetViewRotationSetViewTargetSetViewUpDirectionSet DXContext 获取图形环境句柄。 int DXContext() 返回值 图表环境句柄。 Destroy DXDispatcher