If you’re assigning the values of columns you return from RDO queries into string variables, you’ll get an “Invalid use of Null” error if one of the columns has a
I sometimes want an MDI parent window to be repainted. For example, if a modal dialog is displayed over the MDI form and you click on OK, the dialog is
Placing a message box in an error trap can provide useful debugging information, but it doesn’t allow you to return to the subroutine or function to poke around and further
If you use a resource file in your application, you can see the RES file appear in the project window under “Related Documents.” This is the only type of file
Tired of making a change to a Web page and the change doesn’t show up when you view the page in your Web browser? Holding down the Shift key as
Web page “graceful degradation” means making new capabilities invisible to older browsers that don’t support them. Many authors hide VBScript or JavaScript code inside an HTML comment so that older
You can define JavaScript functions anywhere in an HTML file, however, the best place to define them is in the HTML header (between the and tags). If a JavaScript function
A thrown exception is considered caught, when its corresponding handler has been entered (or, in case such a handler cannot be found, when unexpected() function has been invoked). Sometimes you
Some browsers do not display a table cell’s background color unless the cell contains some HTML content. It is often handy to use table cell background colors to “paint” a