Tip Bank

DevX - Software Development Resource

Compilation Errors

Question: What is an “lvalue”? How does it relate to “rvalue”? Answer: An lvalue is simply a value on the left side of an expression, and an rvalue is a

DevX - Software Development Resource

Text Orientation in a Bitmap

Question: How is it possible to write a vertical text (with TextOut procedure) in a bitmap (Delphi 2)? Answer: I know how to do this with a TLabel descendant, but

DevX - Software Development Resource

VID 1 Environment Mystifying

Question: I have been doing VB since 1.0, and Frontpage since 1.1, however VID’s IDE has me mystified. What book would you recomend. I am at a total loss.Syd Answer:

DevX - Software Development Resource

Include a Hits Counter Using ASP

If you’re using Internet Information Server with Active Server Page technology for hosting your Web site, here is a simple way to include a hits counter and the date the

DevX - Software Development Resource

Highlight Comments in your ASP Pages

If you’re using IIS 3.0 with Active Server Page technology for hosting yourWeb site, here is a very simple way to highlight comments in your ASP pages andreduce page download

DevX - Software Development Resource

Recommended Delphi Books

Question: I am looking for a good introduction book to Delphi. I know Turbo Pascal, but I am still a beginner in the field of OOP and in the field

DevX - Software Development Resource

Access Violation Error

Question: I developed a database using AS400 components. Everything compiled and it was working for awhile. I have not changed anything in the project and now whenever I close the

DevX - Software Development Resource

Computing Number of the Week

Question: I want to compute the number of the week. Thanks in advance PLM Answer: This is pretty basic stuff. If you want the current week of the month, a

DevX - Software Development Resource

ListBoxes and ItemData

Question: How can I expose the ItemData property of a ListBox to use it for storing longint data that corresponds to each item in the list in Delphi 3.0? I