calling a function from within another class

[gregory92]

	filtSliderVal = 0.5;
	float cuttofFreq = (filtSliderVal * filtSliderVal * filtSliderVal) * 9950 + 50;
	

here the filtSliderVal is set to 0.5 but i want to assign it to the value of a slider in another class. the class is called FilePlayerGUI, the Slider is called filtSlider and to get the value of the slider I have to call filtSlider.getValue(). how do i call this function from the class FilePlayerGUI from within another class.

[clanmjc]

I'm having trouble understanding your question, because it looks like you answer it yourself, call filtSlider.getValue(). Are you saying filtSlider is a member of FilePlayerGUI?

What is the relationship of the class(s)

Is slider it's own class?

class Slider
{
   //...
   float getValue();
};

Is Slider a composite class of FilePlayerGUI?

class FilePlayerGUI
{
   //...
   Slider filtslider; //Is this the case?  And if so just make a function that gets
                       //the value of filtslider that is part of the public interface for FilePlayerGUI
};