Question: I have an image with a background color and I'm putting that in a div with the same background color. For some reason I cant save this image as a PNG and have the image bg color show the same as the bg color in the div across all browsers on all operating systems.

At first it looked fine on Windows/Mac in every browser except IE. So I tried using tweakPNG to remove the color profile and gamma properties and that seemed to fix for IE but now I have the issue in Firefox on Linux for some reason?

Any ideas/insight? Thanks

Answer: 
Create an event on the user control where the event args are editable. Let the form attach a handler to that event, which updates those fields. Use those fields in the OnEvent method.

[untested]
eg. 

```
public delegate void NeedsUserDataEventHandler(object sender, NeedsUserDataEventArgs args);

public class NeedsUserDataEventArgs : EventArgs
{
    public UserData UserData { get; set; }
}

// In Control
public event NeedsUserDataEventHandler NeedsUserData;

public void OnNeedsUserData(NeedsUserDataEventArgs args)
{
    NeedsUserDataEventHandler handler = NeedsUserData;
    if (handler != null) handler(this, args);
    // store your data somewhere here
}

// In Form
public override void OnLoad(object sender, EventArgs args)
{
    control.NeedsUserData += ControlNeedsUserData;
}

public override void OnClosed(object sender, EventArgs args)
{
    control.NeedsUserData -= ControlNeedsUserData;
}

public void ControlNeedsUserData (object sender, NeedsUserDataEventArgs args)
{
    args.UserData = // set whatever here
}

```
Seems a bit vague to me, but: 

Make it an event in the containing WinForm, so that every time some data is ready all the subscribers can be notified in a one-to-many model; or make it an event in the subscribed control, in a one-to-one model, in which it calls the container's method that retrieves such data?