Compile error when trying to run this

[AndrewBragdon]

I am getting these compile errors. Thoughts?

dwmaxx-master\dwmaxx-master\Slider\Form1.cs(9,7,9,16): error CS0246: The type or namespace name 'dwmaxxLib' could not be found (are you missing a using directive or an assembly reference?) dwmaxx-master\dwmaxx-master\Slider\Form1.cs(230,9,230,20): error CS0246: The type or namespace name 'DWMInjector' could not be found (are you missing a using directive or an assembly reference?) dwmaxx-master\dwmaxx-master\Slider\Form1.cs(231,9,231,14): error CS0246: The type or namespace name 'DWMEx' could not be found (are you missing a using directive or an assembly reference?)