@BIT
Your source works great!
But I would like to do as I intended)
OK. I redid the project the way you want. A few notes:
1. TBitmap is too slow for this, you will see a lot of flickers, so I switched to TBGRABitmap
2. The project supports multiple monitors
3. For now it's windows only
4. First build the project, then run outside the IDE, because savedialog is painfully slow with debugger
5. If you improve the project please give us some feedback. Thanks.