Bit OR ???

Hi all,

I am using the common dialog control to display the print dialog box...

When this returns I need to check what teh user selected.. eg Collate, PrintToFile, PrintSelection..

I know these are set in the Common dialogs Flag property, but they are all stored in a single number...

In VB how can UI check which bits are set?

to set them you use something like:

flags = a OR b OR c


to check them you do:

if (flags AND a) = a then ...

You can use this code to convert a byte from decimal to binary:

VB Code:

Public Function CBin(ByVal b As Byte) As String
    Dim i As Long
    
    For i = 7 To 0 Step -1
        If 2 ^ i <= b Then
            CBin = CBin & "1"
            b = b - 2 ^ i
        Else
            CBin = CBin & "0"
        End If
    Next i
End Function

Just change the "7" to "30" for longs and "14" for integers (as well as the datatype of "b").

After you use that code on a regular decimal number, you will see a binary number. Each of the 1's and 0's in this binary number can be a flag. When you do this:

VB Code:

1000 OR 0010

you get 1010, which is combining those flags. To test if your four-digit binary number has this flag set: 0010, do this:

VB Code:

If (XXXX AND 0010) Then Debug.Print "XXXX has flag 0010 set"

Thanks victoria.. Worked a treat! ;)


Sorry for the late reply went home yesterday before I saw your post... :D

It's Victor-- I'm a guy ;P