Question: I get a string from the Microsoft Index Server like this: “Information uber”. If I try to assign this string to a variable I get a runtime error: “Invalid
The last digit in your credit card number is a check digit derived from the other digits using the Luhn Formula as described in ISO/IEC 7812-1:1993. Its primary purpose is
VB supports conditional compilation, just like Visual C++. However, Visual C++ has a predefined constant named _DEBUG that makes it easy to include code only while debugging, as in this
Visual InterDev 6 colors HTML and script to make it easier to pick out the type of code and syntax errors. However, many programmers put frequently used routines in an
Sometimes, you want to show a form that you don’t want users to be able to cancel by clicking on the X-it might not make sense for your app. The
Use this code to create a class called HiResTimer: ‘The number is codified as HighPart*2^32+LowPartPrivate Type LARGE_INTEGER LowPart As Long HighPart As LongEnd TypePrivate Declare Function QueryPerformanceCounter Lib _ “kernel32”
You’ll often want to display a checkbox-style listbox to show users the values they have selected in an underlying database. However, you don’t want to allow users to change the
Here’s a little routine that provides a quick and dirty way to call up some of the more oddball features of the Windows shell. It works by emulating user keystrokes,
When using control arrays, I find it difficult to keep track of the index number of each control. Even if I use constants, I often have to look up the