Delphi Programming Series: 51.0 – Using multiple units in a program (Introduction to OOP)

Hi. In this video I teach you how to use multiple units in a project and give you a little intro into Object Oriented Programming in Delphi.

Lazarus IDE:
Embarcadero Delphi:
Delphi Programming Helper (Softpedia Store):
Delphi Programming Helper (Windows Store):

WhatsApp Group:

Delphi Programming Blog:



mohamed mohamed says:

Thank you very much my friend but I have a problem to add unit 1 on unit 3 in Delphi implementation

vinolin moodley says:

Hi Shaun
I had a problem with Delphi for the past few weeks, whenever I enter delphi 10.2 and start any VCL forms application and say I add a few buttons and some basic arrays to it, Deplhi very randomly gives me an error ‘ invalid pointer operation ‘ then crashes, this happens very randomly with the very basic stuff too, e.g a form with a button that displays a showmessage. I installed Delphi 2010 and its the exact same problem, I also tried reinstalling and booting from a new user on the same computer, none of that worked. Do you have any idea about whats going on?

assasins353 says:

thank you man your video are awesome continue

Write a comment


Human Verification: In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Do you like our videos?
Do you want to see more like that?

Please click below to support us on Facebook!

Send this to a friend

▷ Other ReviewsVehicles   Show Cars   Motorbikes   Scooters   Bicycles   Rims & Tires   Luxury BoatsFashion   Sunglasses   Luxury Watches   Luxury Purses   Jeans Wear   High Heels   Kinis Swimwear   Perfumes   Jewellery   Cosmetics   Shaving Helpers   Fashion Hats   Modeling TipsFooding   Chef Club   Fooding Helpers   Coktails & LiquorsSports   Sport Shoes   Fitness & Detox   Golf Gear   Racquets   Hiking & Trek Gear   Diving Equipment   Ski Gear   Snowboards   Surf Boards   Rollers & SkatesEntertainment   DIY Guides   Zik Instruments   Published Books   Music Albums   Cine Movies   Trading Helpers   Make Money   Fishing Equipment   Paintball Supplies   Trading Card Games   Telescopes   Knives   Vapes   GameplaysHigh Tech   Flat Screens   Tech Devices   Camera Lenses   Audio HiFi   Printers   USB Devices   PC Hardware   Network Gear   Cloud Servers   Software Helpers   Programmer Helpers   Mobile Apps   Hearing AidsHome   Home Furniture   Home Appliances   Tools Workshop   Beddings   Floor Layings   Barbecues   Aquarium Gear   Safe Boxes   Office Supplies   Security Locks   Cleaning ProductsKids   Baby Strollers   Child Car Seats   Remote ControlledTravel   Luggages & Bags   Airlines Seats   Hotel Rooms   Fun Trips   Cruise Ships   Mexico Tours