Usercontrol not updating when placed on TabControl pages

Hi

Could someone shed some light on this please

VS2008 VB.NET

I have a usercontrol which has a number of labels on it. The usercontrol acts a bit like a listbox but I can control the background and foreground color of the labels it contains - nothing fancy use it for logging a process - a bit like a scrolling console window.

I have a form with 3 of these controls, Progress, Errors, and a debug logger. Works fine when placed on a form

...until I add a tab control with three paces and place each usercontrol on a tabpage. then random labels are not updated.

Move the UC off the tab control - fine
Move them on - random updates

What am I missing

Help please

Cheers

My best guess would be that the error is in your control and that It has something to do with the parent of the control.

The data is being added to my control, and I can raise an event which is received by the calling app, it's just the labels in the control are not updated...

You would have to look at the code of your usercontrol and you will probably find the problem there. without seeing the actual code all we can do is guess.

what happens when you place multiple usercontrols on the form? I bet the same thing would happen... sounds like your usercontrol might have instance issues.

-tg

Why don't you owner draw a listbox?

Kris

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Originally Posted by techgnome

what happens when you place multiple usercontrols on the form? I bet the same thing would happen... sounds like your usercontrol might have instance issues.

-tg

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Multiple instances on the form work fine, the control only has issues when it's on the tabcontrol

Quote:

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Originally Posted by i00

Why don't you owner draw a listbox?

Kris

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Kris

AFAIK you cannot change the background (or even foreground) colors on a listbox - Is this correct?

Quote:

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Originally Posted by Enveetee

Kris

AFAIK you cannot change the background (or even foreground) colors on a listbox - Is this correct?

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Actually you can change both.

Quote:

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Originally Posted by Enveetee

Multiple instances on the form work fine, the control only has issues when it's on the tabcontrol

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That has got nothing to do with inheritance

Quote:

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Originally Posted by BlindSniper

Actually you can change both.

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Do you have an example pls

do a search for "owner drawn listbox vb" .... should turn up a few results...

-tg

Quote:

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Originally Posted by techgnome

do a search for "owner drawn listbox vb" .... should turn up a few results...

-tg

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Thanks for the tip but I can't find a way of changing the background color of each items. Foreground does not seem to be an issued, even multiple colors on a single line (iitem) but can't change the item's background color

You asked if it is possible to change the background color of a listbox and yes you can, but you cannot change the background of an individual item. You should be more clear when you post. As for your usercontrol problem you will probably have to post the code to have any hope of someone successfully helping you.

Quote:

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Originally Posted by BlindSniper

You asked if it is possible to change the background color of a listbox and yes you can, but you cannot change the background of an individual item. You should be more clear when you post. As for your usercontrol problem you will probably have to post the code to have any hope of someone successfully helping you.

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Yeah, you're right, sorry group

I'm currently stripping the control down to the point where I can recreate the problem with the minimum of code, I'll post it once done

Again, apologies

Cheers