CODEWITHSUNDEEP
c#winformsforms
Hari krishnan
Hari krishnan

Reputation: 2108

Entire Window click not working C#

I had created a simple C# program with Mainform.cs, Mainform.Designer.cs and Program.cs files with SharpDevelop.

In that, i added a label at Point(10,10) in the form like this:

l.Text="Welcome";
l.Location=new System.Drawing.Point(10,10);
l.Size=new System.Drawing.Size(100,100);
mainForm.Controls.Add(l);

And then added an event handler for identifying mouse clicking on the form. When clicking a label to change its text. 

l.Text="Clicked";

But it only changes text when clicking point less than (10,10). How to make it to change text when clicking anywhere on the window?

Thanks!

Upvotes: 0

Views: 101

Answers (2)

King King
King King

Reputation: 63387

Of course attaching the same handler for both the Click event of your Form and your Label is OK, however what if you add more containers with nested relationship? I would go for a global Click event solution by using an IMessageFilter, something like this:

public partial class Form1 : Form, IMessageFilter {
   public Form1(){
     InitializeComponent();
     Application.AddMessageFilter(this);
     //Try this to see it in action
     GlobalClick += (s,e) => {
        l.Text = "Clicked";
     };
   }
   public event EventHandler GlobalClick;
   public bool PreFilterMessage(ref Message m){
     if(m.Msg == 0x202){//WM_LBUTTONUP
        EventHandler handler = GlobalClick;
        if(handler != null) handler(this, EventArgs.Empty);
     }
     return false;
   }
}

Upvotes: 2

BartoszKP
BartoszKP

Reputation: 35921

Attach the same event handler also to label's Clicked event, not only the form's event. In the version you've described the click events are being consumed by the Label control, and not being passed to the form.

Upvotes: 2

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