Question: I have a simple editor unit with a TMemo component whose text I want tosend to the printer. How can I do this? Answer: This is actually much easier

Question: What do the PRIVATE, PROTECTED, PUBLIC and PUBLISHED sections of a unit mean? Answer: They define the level of visibility of properties and methods of an object. In a

Question: In many of my applications, when I perform a query, I write itout to disk, using a TBatchMove. How can I create a component that willcombine the functionality of

Question: I created a UI for a selector guide using Frame, Menubar andMenuItems. I am having trouble writing the event handling; specifically, Ineed to see an example using replaceText when

Question: For instance, I’d like to use a DBGrid as a navigating tool as follows:Clients table with standard name, phone number etcOne DBText for each editable fieldDBGrid contains just the

Question: Is there a SQL equivalent to Delphi’s Pos() function? Answer: You bet. It’s called the SUBSTRING function. Like the Pos function,the SUBSTRINGfunction in SQL will return a substring of

Question: I created a new edit control component which I derived from TEdit,however, when I added it to the component palette, it has the samebitmap as TEdit. How do I

Question: I want to display a scrolling list of items from a database: product | description | manu | expiration | product | description | manu | expiration | product

Question: When dragging and dropping fields from the table editor onto a form, the field text appears above the field. For the sake of faster development, is there any way

Question: *Delphi will not start anymore after adding component.*In Delphi 2.01 C/S after compiling a program and then changing the .DCL with Open Library or compiling a new component library

Question: If I have an applet on one HTML page, I can useAppletContext() to cause a new HTML page to becreated. How do I control the size of the Netscapewindow

Question: I have written an applet that creates a graph from the resultsof a query of our Oracle database. The graph looks good in the browser(Netscape 3.0), but if I

Question: I created a simple abort dialog box with one button. During a long query I want to display my box so the user can abort. The dialog box creates

Question: If I have: abstract class A; class B extends A; class C extends A; and I want to make an array of class A objects in order to access

Question: Is there a way to make a binary executable from Java code? Answer: There are several stunts you could try in order to accomplish this,but they all cripple the

Question: How can I include random numbers drawn from a Poissondistribution in my applications? There is only a Gaussian distribution in java.util.Random. Answer: Well, this one is a little off

Question: How can I program a form to submit multiple queries and show each response in a different frame? Answer: In JavaScript, the onClick event handler can be used to

Question: How can I add a new menu item to the systemmenu application? Answer: Forthe most part, you’ll never have a need for this. But it is useful for setting

Question: How can I resize forms independent of screen resolution? Answer: The following code comes to us via Peter Jagielski, a formerBorland engineer, and myself. Peteris responsible for the SetSize

Question: How can I force a drop-down combo to drop its list down? Answer: This is done by using a Windows message called CB_SHOWDROPDOWN. I recommend that you look in

Question: I’ve read, in several places, that Java sets bit-size and format for numeric representation internally. I can’t find anything that says Java also dictates how the data will be

Question: I read(somewhere) that the Java spec. allows for applet access to the local diskin a restricted way. That is, the client should be able to specify adirectory on the

Question: I am trying to make an HTML page with many applets running concurrently.Unfortunately, an applet that I created uses up much of the CPU time andslows all the other

Question: The ‘greater-than’ vs. ‘comment’ dilemna Answer: There is a trick in writing JavaScripts which all developers should learn as soon as possible. When putting a script in your HTML,

Question: The new operator allocates memory for objects.How isthis memory deallocated? Answer: If you have ever programmed in C++, you might wonder why JavaScript doesnot have a delete operator to

Question: How do I restore a window’s size and position? Answer: This new tip comes from Hamish. He has converteda TurboPascalfor Windows routine that allows you to save and restore

Question: How do I make my Delphi programs go to sleep? Answer: Note:Since the following was written, Delphi 2.0 has added a Sleep command. The following code can be used

Question: How do I highlight or make bold the text in a button or a list? Answer: Java Buttons, Lists, Labels, TextAreas, Canvases, etc, are all subclasses ofthe Java Component

Question: When paint() iscalled, the clipRect of the Graphics obj may already be set to somethingsmaller than the full drawable region of the object (if, for instance, it’sa partial window-manager

Question: The MoveFile command does not work for me with some filenames. An example is as follows :MoveFile(‘C:CIPLINCOMING199702110408440000000000.SAV’, ‘C:CIPLARCHIVE’);yet, if I try to move a file called ‘test.sav’ with the