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DevX - Software Development Resource

Out of Memory errors in Delphi 2.0

Question: I am working on my first Delphi 2.0 application which has grown to be quite large over the past few months. The problem is that lately I have been

DevX - Software Development Resource

Mouse Support Under DOS

Question: In what direction should I look to find a way tobuild a simple dos aplication with mouse control. Answer: Building a DOS application that provides mouse support involves writing

DevX - Software Development Resource

Endless Loop

Question: I am having a problem with getting an infinite loop out of a particular program and I am not quite sure where the problem is at. If you could

DevX - Software Development Resource

DOS Graphics vs. Windows

Question: Is there a header file in Visual C++ v4 (sorry a bit behind :)) that replaces the old graph.h? I am writing console apps for school and would like

DevX - Software Development Resource

Accessing I/O Memory under Win32

Question: I would like to program the parallel port in Windows NT or 95. What should I do? Answer: At the simplest level, accessing the parallel port involves reading and

DevX - Software Development Resource

How to Learn C++

Question: What is the best way to learn c++?I can study on line, by book or attend a course.Which are the bests places to start. Answer: The answer really depends

DevX - Software Development Resource

Aborting a Loop

Question: Is there any way to abort a loop with just pressing a kee. Like you could do in Pascal: dountil keypress Answer: If you are writing a loop that

DevX - Software Development Resource

Wild card searching using DataWindow

Question: I tried to place wild-card (e.g. ‘%Ken%’) for the searching of records in a DataWindow through QueryMode, but couldn’t get the result. Are there any other ways to do

DevX - Software Development Resource

External function for checking a process

Question: Our Powerbuilder application launches an external program using the RUN command. We use the Timer Event to keep checkingif the process is running by using theKERNAL32 external function GetModuleHandleA.

DevX - Software Development Resource

Compressed file types

Question: I recently downloaded some applet source code, but they are all stored in “.tar” type files. What program do I need to expand them or otherwise make them useful?

DevX - Software Development Resource

Time formatting

Question: I need to find 2 things. I need a classthat will allow me to take a date and addand subtract days/months/years from it. I also need a class that

DevX - Software Development Resource

String to int

Question: I’m a new Java developer and was wondering if there is an easy way to grab information from a String object and place it into an “int”. For example:

DevX - Software Development Resource

Applet caching.

Question: I have been trying to test my applets under IE4.It seems to me that IE4 must keep applets cachedbecaused I think it keeps running my original applet.Is there a

DevX - Software Development Resource

Is there a PB code profiling utility?

Question: I was wondering whether you could direct me the appropriate product or contact for the following information.I am currently investigating the use of supporting test tools for PowerBuilder. In

DevX - Software Development Resource

Solving problems with Distributed PB Apps

Question: I had some problems with distributed applications. I developed a DPB project (both the server and the client). The server has a NVO that connects to a database and

DevX - Software Development Resource

Share Data from two primaries

Question: If I try to share data from one primary into the secondary, no problem. The problem occurs when I try to share data from two primaries into one secondary.

DevX - Software Development Resource

Changing Password in Oracle 7.3 database from PB

Question: I am creating a “Change Password” screen in PowerBuilder 5.0. The window basically accepts the password entered by the user, verifies it by connecting to the database, then tries

DevX - Software Development Resource

Bitmap size in PB toolbar

Question: How can I use a bitmap of 32X32 size for my toolbar icons? Does PB5.0 support this or is it necessary to shrink them to 16X16. Answer: The bitmap

DevX - Software Development Resource

Web Browser using VB 5

Question: I am currently writing software that will act as client and server software for a small ISP. I waswondering if there is any way to view web pagesusing Visual

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Browsing with Netscape

Question: I need a way to find the “netscape.exe” file using VB. Then I want to send them to an Internet address using API. Answer: What if Netscape isn’t installed?

DevX - Software Development Resource

List boxes

Question: How can I put the output of a do-while loop in a list box then delete it for the next run?ex.o=0do (o=o+1)Randomize timerx=rnd( * 6)+1z=x*4Print z to loop Answer:

DevX - Software Development Resource

CD-ROM Detection

Question: How can I find the CD-Rom drive letter(s) from Visual Basic 5.0? Answer: The simplest method is to call the Win32 GetDriveType API against drives C:-Z:.Private Declare Function GetDriveType

DevX - Software Development Resource

removing the sheet toolbars

Question: I am using PB 5.0. I have an MDI application. There is a menu on the MDI frame. I inherited that menu to create a window menu. The window

DevX - Software Development Resource

PowerBuilder source recovery

Question: I have a client with a PowerBuilder application, but no source code. Is there a way to reverse-engineer or recover the source code?? Answer: It is not possible to

DevX - Software Development Resource

Year 2000

Question: Do you have any information on Year 2000 compliance effort for VB4 / VB5 systems? Answer: Visual Basic itself is and has been year 2000 compliant. The built-in Date

DevX - Software Development Resource

Searching Multiple Files

Question: I use VB5 and I’m trying to search through multiple files for a string and open this file in a TextBox. How can I do this? Answer: There really

DevX - Software Development Resource

Append data to a text file

Question: How do I append information to a file? This information is inserted by the user, into a text box, and then a command button is clicked to update the

DevX - Software Development Resource

The java.io.File class and Microsoft file systems

Question: After about 4 hours of work, I’d come up with an application (alltext, runs from the command line) that asks for a starting directory,and recursively writes all of that

DevX - Software Development Resource

Piping External Process Output

Question: I am attempting to run a series of externalapplications within JAVA. I need the resultsof the prev. application piped as input to thefollowup application. I understand the spawningof the