Tip Bank

If you use the left arrow key to go back to the beginning of a word and then enter a letter, you get twouppercase letters. Use this code, which takes

This function returns the number of bytes used on the directory: Function DirUsedBytes(ByVal dirName As _ String) As LongDim FileName As StringDim FileSize As Currency’ add a backslash if not

This function returns the hard disk free bytes, total bytes, percentage of free bytes, and used space. Before calling the function, set the first field of the DISKSPACEINFO structure (“RootPath”)

VB4 supports the built-in Win95 Toolbar control, which allows users to add Buttons to the toolbar. The buttonhas a ButtonClick event, but if you want to trap a double-click, there

Dir$ raises a runtime error if you supply it an invalid drive. For example, Dir$ (“d:winhimems.sys”) crashes ifdrive d: doesn’t exist. To check if a file exists, add an error

This code illustrates how to use a Collection to automatically generate a unique set of values from a set of datacontaining duplicates. In this example, scan a string array and

You can use the almost-forgotten ability of Visual Basic to have a function or sub with an undeterminednumber of arguments do something to a set of controls. For example, you

You cannot directly access constituent controls on a UserControl component from another module of the sameproject. Constituent controls behave differently from controls on forms, which you can access from any

I’ve seen several tips using numeric values instead of the corresponding Visual Basic constants. Always usethe Visual Basic predefined constants. For example, you can set up a message box using