Solved

Scrolling with mousewheel doesn't scroll a FlowLayoutPanel

Posted on 2009-04-10
3
2,674 Views
Last Modified: 2013-12-17
(C# .NET 2.0) I have a form with a TabControl, and inside many of the tabs is a FlowLayoutPanel containing multiple images. I am unable to scroll up/down these FlowLayoutPanels with the mouse wheel - I can only do it by dragging the scrollbar at the side which is a bit of an inconvenience. How can I set some sort of method to recognise the wheel being scrolled if the mouse is within the area of the FlowLayoutPanel, and if so move the panel up and down?

Also I would like to add that the mouse does successfully scroll the panel on my laptop using the scroll side of the touchpad, yet if I plug a mouse into the laptop and use its wheel it doesn't scroll with it, so the panel is obviously only responding to certain mouse drivers it seems. Any help would be appreciated.
0
Comment
Question by:smickell
  • 2
3 Comments
 
LVL 85

Accepted Solution

by:
Mike Tomlinson earned 500 total points
ID: 24120412
You need to give your FlowLayoutPanel focus:

        private void flowLayoutPanel1_MouseEnter(object sender, EventArgs e)
        {
            flowLayoutPanel1.Focus();
        }

You may need to do the same thing with the PictureBoxes (I assume).  That is to say, on MouseEnter() for the PictureBoxes, give focus to "flowLayoutPanel1".
0
 

Author Comment

by:smickell
ID: 24121641
As easy as that! I didn't think that would be needed because I already tried just clicking on the FLP, keeping the mouse in that spot (so it still had 'focus') and scrolling and it made no difference.
I didn't seem to need to create an additional event for the pictureboxes, the FLP is still scrollable even when hovered over the picturebox.
Many thanks Idle_Mind and have yourself a nice 500pts.
0
 
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 24122165
It just depends on how much "margin" there is between the edge of your FlowLayoutPanel and the PictureBoxes.  If the margin is very small and the user is moving the mouse fast...then the MouseEnter() event might not fire for the FlowLayoutPanel (it might instead go directly to the PictureBox).
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

IP addresses can be stored in a database in any of several ways.  These ways may vary based on the volume of the data.  I was dealing with quite a large amount of data for user authentication purpose, and needed a way to minimize the storage.   …
This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now