by val explination

chris2727272727

Board Regular
Joined
Jul 10, 2005
Messages
152
(ByVal Target As Range, Cancel As Boolean)
(ByVal Target As Range, Cancel As Boolean)
(ByVal Target As Range, Cancel As Boolean)

(ByVal Target As Range)

What do the above expressions mean???
 

Some videos you may like

Excel Facts

Bring active cell back into view
Start at A1 and select to A9999 while writing a formula, you can't see A1 anymore. Press Ctrl+Backspace to bring active cell into view.

tusharm

MrExcel MVP
Joined
May 28, 2002
Messages
11,028
For simple variables (i.e, not objects) the below test should illustrate the difference between ByVal and ByRef
Code:
Option Explicit

Sub testByRef(ByRef x As Integer)
    x = x - 1
    End Sub
Sub testByVal(ByVal x As Integer)
    x = x - 1
    End Sub
Sub testControl()
    Dim y As Integer
    y = 10
    testByVal y: Debug.Print y
    testByRef y: Debug.Print y
    End Sub

Basically, ByVal makes a copy of the variable (using its current value) and passes that copy to the subroutine. So, any changes the subroutine makes to the argument are made to the copy of the actual variable. Since the copy is discarded when the subroutine exits, the original remains untouched.
 

Watch MrExcel Video

Forum statistics

Threads
1,122,445
Messages
5,596,201
Members
414,045
Latest member
Xlence

We've detected that you are using an adblocker.

We have a great community of people providing Excel help here, but the hosting costs are enormous. You can help keep this site running by allowing ads on MrExcel.com.
Allow Ads at MrExcel

Which adblocker are you using?

Disable AdBlock

Follow these easy steps to disable AdBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the icon in the browser’s toolbar.
2)Click on the "Pause on this site" option.
Go back

Disable AdBlock Plus

Follow these easy steps to disable AdBlock Plus

1)Click on the icon in the browser’s toolbar.
2)Click on the toggle to disable it for "mrexcel.com".
Go back

Disable uBlock Origin

Follow these easy steps to disable uBlock Origin

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back

Disable uBlock

Follow these easy steps to disable uBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back
Top