in Windows Messages :: Windows messages are a key ingredient in communication between Windows and (your) applications and also in communication between (two) applications. For an application to receive a Window message, the application must provide a "window" a message will be sent to. What is you do NOT have a window to receive a message? What if you want to handle messages in your custom class derived from TObject?

Read the full article to learn how to Receive and Handle Windows Messages In Your Custom Delphi Class - NonWindowed Control

Related:

• Another Way to Drag a Window
• Sending messages to non-windowed applications
• Handling Windows Messages the Delphi way

in Delphi TIPS :: Delphi's ShowMessage procedure, defined in the dialogs.pas unit, displays a message in a dialog box, waits for the user to click an OK button.

I'm using the ShowMessage procedure frequently while developing applications as a "debugging" tool to display values of various variables, properties, function results.

A downside of the ShowMessage is that it only accepts a string parameter - where variables tend to be integers, bools, floats, etc. :)

Read the full article to learn how to Overload ShowMessage to accept Integer, Boolean, Float, ...

Related:

• Understanding Method Overloading and Default Parameters in Delphi
• The "original" ShowMessage
• BoolToStr function

in OLE Examples :: Windows Management Instrumentation (WMI) is the infrastructure for management data and operations on Windows-based operating systems. You can use Delphi to communicate with WMI by using a variety of interfaces. All the WMI interfaces are based on the Component Object Model (COM).

Read the full article to learn how to Exploit Win32_OperatingSystem WMI class to get the name of the installed Windows OS.

Related:

• Get Windows Version from Delphi code
• Programmatically Exit From Windows using Delphi code
• A guide to developing Delphi programs in Windows API

in TRichEdit :: Delphi's implementation of the rich editor control (TRichEdit) does *not* expose the default context popup menu when the rich edit is right-clicked.

Read the full article to learn how to Implement Add a Standard Context (popup) Menu to Delphi's TRichEdit

Related:

• On Delphi and the Clipboard
• TRichEdit Articles Tips and Tricks
• On Menus and Context / Popup Menus