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Chart has 2 objects, a and b，how to call their own methods in mousepressEvent ?
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the mousepressEvent will be triggerd by both, and a also call the method of b, how do they call their own method
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Not very clear about the question. Still let me try.
object a & b may have signals and slots. There may be connection between a and b. Hence when the mouspressevent happens, signal may be emitted and is received by another object.
