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Tip of the Day
Language: Visual Basic
Expertise: Beginner
Oct 1, 1996

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Application Security Testing: An Integral Part of DevOps


Getting Windows Directory

Question:
How do I determine the Windows directory?

Answer:
The API call to use is "GetWindowsDirectory". The Declare statement is listed in the the Windows 3.1 API help and the documentation is in Windows 3.1 SDK help file. Note: for VB4, obtain the API declaration from the API Text Viewer.

To use, do the following:

Dim buffer as String * 128
Dim size as Integer
Dim retval as Integer

buffer = space$(128)
size = 128
retval = GetWindowsDirectory(ByVal buffer, ByVal size)

When the subroutine executes, the Windows directory will be located in the string named "buffer". The "buffer" variable MUST be declared with a size, so use Space$(128) as a safety precaution. Since VB does not use null-terminated strings, the size value tells it how big the buffer is. If you do not do this, your program will crash.

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