Mouse Events

[rich_wenger]

Hi, I have an app that needs to trap mouse events across a form hosting multiple controls for a keep-alive timer. Any help would be greatly appreciated.

[Dan Neely]

Write handlers for some or all of the mouse events: MouseDown, MouseUp, MouseEnter, MouseHover, MouseLeave, and MouseMove events, and wire them to *every* control on the form.

[rich_wenger]

Hi, and thanks for responding. Lets say I write mouse events for Form1; how do I wire them to 'every' control on the form? this.MouseMove +=new MouseEventHandler(Form1_MouseMove); private void Form1_MouseMove(object sender, MouseEventArgs e) { //Do Something here }

[Luis Alonso Ramos]

rich_wenger wrote:

how do I wire them to 'every' control on the form?

this.MouseMove +=new MouseEventHandler(Form1_MouseMove);
btnOK.MouseMove += new MouseEventHandler(Form1_MouseMove);
txtName.MouseMove += new MouseEventHandler(Form1_MouseMove);
chkRemember.MouseMove += new MouseEventHandler(Form1_MouseMove);

and so on. Or you could also do this:

foreach(Control ctl in this.Controls)
    ctl.MouseMove += new MouseEventHandler(Form1_MouseMove);

If you have controls inside other controls (panels or group boxes for example), you'll need to do that recursively. If you always use the same handler, the same routine will be called for events raised by any controls. I hope this helps. -- LuisR

---

Luis Alonso Ramos Intelectix - Chihuahua, Mexico Not much here: My CP Blog!

The amount of sleep the average person needs is five more minutes. -- Vikram A Punathambekar, Aug. 11, 2005

[Gulfraz Khan]

And you can use the following sample code to add mousemove event handler to every control on your form (as Luis pointed out). //you may call the function in the Form_Load event as AttachEventHandler(this); void AttachEventHandler(Control ParentControl) { foreach (Control ctrl in ParentControl.Controls) { if (ctrl.HasChild == true) { AttachEventHandler(ctrl); // recursive call, add handler to child controls also } else { ctrl.MouseMove += new MouseEventHandler(Form1_MouseMove); } } }

[rich_wenger]

Thanks, I'll give it a try after lunch.

[rich_wenger]

Your solution works except for the following statment:

Gulfraz Khan wrote:

if (ctrl.HasChild == true)

It should actually read: if (ctrl.HasChildren == true) Thanks again.