Control that detects events

Eyob_the_pro · January 4th, 2007, 02:49 AM

i designed a control that has a label docked Fill (it covers the whole form)
i want to create a MouseHover event.
the problem is that you should disable the lable.

SOLUTION SHOULD BE:
1. Providing a control with a label filling the control's form.
2. The control should detect the MouseHover event

Thankyou

planoie · January 4th, 2007, 03:43 PM

There is an event on most controls: "OnMouseHover" that will fire when you hover over the control. You need to set up an event handler to that event for the label control.

-Peter

Eyob_the_pro · January 5th, 2007, 02:37 AM

Look Peter the problem is that the Events that are attached to the label on the control will not be raised when the whole control is used. You can try some other method.

planoie · January 5th, 2007, 10:18 AM

What do you mean "when the whole control is used"? How could only part of the control be used? Or do you mean that the events aren't firing when the label control is docked as Fill? Can you try the label without to docked to see if at least the code for the label is working first?

-Peter

Eyob_the_pro · January 9th, 2007, 07:02 AM

I am sorry for the "when the whole control is used" is used.
What i mean is that when i use the control in a form the required event will not be raised. I know that disabling the label works fine. But i want the label to have a colorful background image and the text displayed should be colorful (which will be lost if the label is disabled).
i guess the problem is that because the label covers the whole control and is enabled, the event on the form cannot be raised. If this is so, the solution should be by raising the form's MouseHover event when the label's MouseHover event is fired.
Can you get me some way of doing this.

10X in advance.

planoie · January 9th, 2007, 10:49 AM

Why can you not do what you need on the label's mouseover event?

I'm not sure if there's a way to force another object's event to fire from outside that object itself.

-Peter

RNedel · January 9th, 2007, 07:54 PM

Eyob_the_pro:

I think the following might work for you.

1. Within your custom control, create an event handler that will be called whenever the child label control's MouseHover event fires.

2. Within that event handler, call your custom control's OnMouseHover method.

Here's some sample code:

Code:

  public partial class MyControl : UserControl
  {

    // Custom control's constructor.
    public MyControl()
    {
      InitializeComponent();

      // Add event handler for child label's MouseHover event...
      objLabel.MouseHover += new EventHandler(objLabel_MouseHover);
    }

    //----------

    // Event handler called whenever child label control MouseHover
    // event occurs.
    void objLabel_MouseHover(object sender, EventArgs e)
    {
      // Fire this custom control's MouseHover event.
      this.OnMouseHover(e);
    }

  }

Cheers.

- Roger Nedel

zorglub76 · February 14th, 2007, 11:58 PM

Damn!
This works, and thanks for the solution, but is it possible that there is no other way to solve this problem? I am creating a list control where each list item consists of a picture and six labels. I need all these sub controls to act as one, which means i have to forward a dozen of mouse events x7 sub controls! Almost hundred event handlers for a single list item!?! I can't believe it!...