Perform certain actions while the mouse is clicked?

I am trying to display Image A and play Sound A while the mouse is clicked. Once the mouse is unclicked I would like Image B to be displayed and Sound B to be played for 3 seconds. This will be done for mutliple trials. I am using PsychToolBox.

Right now I have a code that isn't breaking, but is just cycling through my image stimuli without playing any sound and without any influence of the mouse.

I think there may be an issue with how my loops are structured and how I am calling to the mouse click. The stimuli have been read in using other functions.

Really I think I just need some direction on where to put each of my loops and how to tell the loop to do somethig while the mouse is pressed.

Thanks for any tips, I am brand new to programming!

try
    [window,rect]=Screen('OpenWindow',0);
    Screen(window,'BlendFunction',GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);  % tells MATLab how to read the transparency data of images
    ShowCursor('Hand')

    
    for(i = 1:length(stimuli_img))
        %%% gray background aka graySquare
        imData_gray = base_img(4).imData_base;
        imageTexture_gray = Screen('MakeTexture', window, imData_gray);
        Screen('DrawTexture', window, imageTexture_gray,[],[loc_b_x, loc_b_y, loc_b_x + imX_b, loc_b_x + imY_b]);

        %%% stimuli images ---- one of the images I would  like displayed while the mouse is NOT pressed
        imData = stimuli_img(i).imData;
        imageTexture = Screen('MakeTexture', window, imData);
        Screen('DrawTexture', window, imageTexture,[],[locx, locy, locx + imX, locy + imY]);

        %%% orange hexagon aka buttonOFF ---- one of the images I would like displayed while the mouse is NOT pressed
        imData_hex = base_img(1).imData_base;      
        imageTexture_hex = Screen('MakeTexture', window, imData_hex);
        Screen('DrawTexture', window, imageTexture_hex,[],[loc_h_x, loc_h_y, loc_h_x + imX_h, loc_h_y + imY_h]);
       
        while GetMouse == 1
            beepData = audioread('Beep_1.wav'); % sound file I would like to play when mouse is pressed
            frequency = 48000;
            sound(beepData, frequency);

            %%% blue hexagon aka buttonON ---- one of the images I would like displayed while the mouse is pressed 
            imData_hexON = base_img(2).imData_base;      
            imageTexture_hexON = Screen('MakeTexture', window, imData_hexON);
            Screen('DrawTexture', window, imageTexture_hexON,[],[loc_h_x, loc_h_y, loc_h_x + imX_h, loc_h_y + imY_h]);
        end
        
   
        
        Screen('Flip',window);
        
        WaitSecs(dur)                                                  
        
        
        %%% Emergency Escape
        [keydown, time, keyCodes] = KbCheck;            % kbcheck shows what keys are currently being pressed
        key = KbName(keyCodes);
        
        if(strcmp('esc',key) | strcmp('ESCAPE',key)| strcmp('Escape',key)) % use Escape key as an emergency escape
            break
        end
        %%% End the Emergency Escape Code 
        
      
        
        %%%
    end