Sending click events from a custom control back to the form the control is on

[mickn66]

I have this user control I made called a Blob. The blob is a small control that has a panel on it, covering the entire control, and a label on the top half of the panel. And I have a Form with a number of Blobs on them. I�ve managed to get the Blob, each of them, to respond to a click on the panel (the part that isn�t covered by the label) by popping up a message box that identifies the Blob � by putting a message box in the Panel�s Mouse_Down handler (the message box displays a property of the Blob called �longname� � each Blob has a different one). However, I don�t know how to pass the longname (or some other id) back to the form that the Blob is on. I don't even know how to get the form to realize that a Blob has been clicked on, in addition to which blob it was. Putting something in the MouseDown handler of the form itself only reacted when I clicked on a part of the form that was not covered by a Blob. Thanks in advance.

[PhilBayley]

This may not be the best solution but you could pass the form class by ref in the constructor of blob and assign it to a global variable. This way whatever you do to the global variable will happen to the form.

 

PB

[Joe Mamma]

attach a method of your form to all of your blobs click/mouse down event.

 

when the method is fired the blob will be the sender argument

[mickn66]

Thanks for your help. How do I go about attaching a method of the form to all the blobs? I mean considering that the Blobs are created at run time. The code I have that adds new Blobs when necessary looks like this:

 

Dim newblob As Blob = New Blob

...several properties of newblob are set..

 

Me.Controls.Add(newblob)

 

Do I need to add something to attatch the method on the form to the newbob? Thanks again in advance :)

 

 

attach a method of your form to all of your blobs click/mouse down event.

 

when the method is fired the blob will be the sender argument

[PhilBayley]

How about something like

 

public class Form1 : System.Windows.Forms.Form
{
 private System.Windows.Forms.MainMenu mainMenu1;
 private System.Windows.Forms.MenuItem menuItem1;

 etc etc...

 public void DoSomething (string something) 
 { 
   ..... 
 }

 public void CreateBlobs ()
 {
   BLOB b = new BLOB(ref this);
 }
}

public class BLOB
{
 private Form1 useform;
 public BLOB (ref Form1 form)
 {
    useform = form;
 }

 public void DosomethingtoForm ()
 {
    useform.DoSomthing("Hello from BLOB");
 }
}