[RESOLVED] scroll MDI Container with mouse wheel???

[adamm83]

I've decided to post this here (rather than the codebank thread) so more people will see it and possibly come up with a solution to another problem that gets generated.

It seems that as long as the ActiveControl isn't one which already responds to the mousewheel (textbox/combobox/etc.) then the WM_MOUSEWHEEL is sent to the MDIForm and we just have to do some simple subclassing and then we can move the child form accordingly.

However - the MDIForm scrollbar won't change it's position relative to the movement of the form - and I can't, for the life of me, get it to refresh without resorting to resizing the whole MDIForm which is obvious to the user.

Edit: Just incase you weren't aware - this code (since it uses subclassing) will crash the IDE and you'll lose any unsaved work if you press the Stop button - unload the form correctly and you'll have no trouble & remember to save!

Hey bushmobile,

I just tested out your code and it works!!! The vertical scrollbar DOES refresh, but only when you move your mouse outside the mdi form. Also, one thing I noticed is it scrolls the child even if it's smaller than the parent. What I mean is, even if there is no vertical scrollbar, it still scrolls the child, which is not necessary.

I will take a look at the code and see what I can do with it. I will also try out the FreeWheel and/or MS Intellipoint app that westconn1 suggested. I would honestly rather install a small mouse driver to fix the problem rather than add some code that may or may not cause other conflicts with my application.

Again i will test both ways and see which works better. Although I am not sure if westconn1 understands what I was looking for. I don't need to be able to scroll in the vb IDE. There is actually a fix from microsoft to fix the vb6 IDE scroll wheel problem here, which also suggests to install Intellipoint v4.12. But I will try intellipoint and freewheel to see if it works with scrolling an mdi parent and child form.

EDIT:
hahaha I figured out a SUPER ghetto way of refreshing the scrollbar. Actually it's stupid and pointless, but maybe it will get you thinking...
Add this where your comments is:

Me.Visible = False
Me.Visible = True

Maybe its just a matter of setting a property of the mdi form which whill initiate a refresh.