Learn DELPHI-VCL with Real Code Examples

Minimize nested controls for better painting performance

Use owner-drawn controls for complex UIs

Optimize database queries

Use threads for long-running tasks

Avoid excessive real-time GUI updates

Validate user input to prevent SQL injection

Use secure storage for sensitive data

Properly handle exceptions

Restrict access to administrative functions

Keep third-party components updated

Application logging

UI event tracking

Database query performance

Memory usage monitoring

Thread activity analysis

Use proper naming conventions

Keep event handlers small

Separate business logic from UI

Reuse components where possible

Document code and forms