Using ShellAPI unit and few lines of code, we can load directory structure into ListView and show associated icons and information for each file.

Do you remember Delay procedure from Turbo (Borland) Pascal? It was used to pause the program “flow” for specific time interval. In Windows, there is a different style of programming, but sometimes (maybe) the Dealy procedure may be useful. Here is a simple implementation of Delay procedure using Delphi.

There are few methods to check if computer is online (=connected) or offline (=disconnected). This one is really simple.

For some applications, it’s important to know, where the taskbar is located. Of course, most users use standard “bottom of the screen” position, but of course, you can place it to the left, rigtht or top of the screen. Here is the method to determine actual position.

If want to allow users to run just one instance of application, one of possible methods is to use “mutext” (mutual exclusion).

This tip is very simple. Just use standard function GetTickCount and the rest is just elementary mathematics.

Here is just small piece of assembler code to determine CPU frequency in MHz.

Simple function to show and hide taskbar clock.

You can move mouse cursor and simulate clicking programmatically using just one simple procedure.

Another “one-line code trick” and probably completely useless.