Lazaus 1.84 / Win 10.
Compiled and ran wp's little prog.
A simple way to test paste is press the keyboard PrtSc/SysRq key for a screen shot. Then click the paste button on the prog and it pastes the screenshot in nicely.
For copy, open MSPaint, open wp's app, then use paste in MSPaint. Nothing pastes (clipboard is empty).
Click copy on the app to assign the leopard pic to the clipboard and then paste in MSPaint will work by pasting the leopard.
Worked for me anyway.
(For the record, text in caps has always been regarded as shouting since the early days of online chat, going way back into CompuServe days before the main www existed.)