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The source code in this issue is designed for all versions of Visual Basic.
In this issue we are going to show how to make a directory tree/branch. This is useful in any application where the end user can specify a directory that does not exist for saving a file (this is just one example, there are many others).
The reason a function like this is necessary is because the mkdir function that is built-in to Visual Basic can only create a single directory at a time. For example, if you do MkDir "C:\APPS\MYAPP\DATA" and the MYAPP\DATA portion of the directory does not exist the MkDir function will fail.
If any of the directories already exist it will skip creating them. This function will never erase any data. If the directory C:\APPS already existed, it would just create the MYAPP\DATA branch.
The MakeDirectories function will allow you to create multiple levels of directories in a single function call, overcoming the limitation in Visual Basic.
To use this function, just add it to any project or module you are working on and call MakeDirectories as described in the Sample Usage section.
Returns TRUE if it was successful at creating the complete directory branch. Returns FALSE if the creation of any part of the directory branch failed.
If Not MakeDirectories("C:\APPS\MYAPP\DATA") Then MsgBox "Directory Creation Failed." End If
This will create all the directories in the path C:\APPS\MYAPP\DATA. If any of the directories already exist it will skip creating them. This function will never erase any data. If the directory C:\APPS already existed, it would just create the MYAPP\DATA branch.
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In Visual Basic 4.0 and 5.0 you can replace the ATTR_DIRECTORY with vbDirectory constant and remove the constant declaration in the beginning of the function. The code as is will work in VB 4.0 and VB 5.0 , the above is just a small enhancement to be compatible in future versions of VB.
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