How to check if Mouse Click is in User Control without handling child control events?

Question

I have an User Control that host another controls like panel, chart controls.

Right now i have implemented the Header Panel control's MouseClick event to capture the mouse event, but i need to capture mouse click or mouseDown event on the whole user control area.

pnlHeader.MouseUp += new MouseEventHandler(pnlHeader_MouseUp);  //it is working 

//Not able to capture because child control coverup all area of the usercontrol.
this.MouseDown += new MouseEventHandler(MyCustomControl_MouseDown);

Capture mouseclick event

I went through this SO thread, but it does not help me regarding mouse click or mouse down event.

So what is correct and efficient way to capture user control mouse event??

Any idea or suggestion with some reference code(if possible) will be accepted.

Thanks in advance.

score 4 · Accepted Answer · edited May 23 '17 at 12:13

4

There is no way of bubbling events in WinForms like there is in HTML or in WPF

How do I grab events from sub-controls on a user-control in a WinForms App?

So you will always need to add extra code.

edited May 23 '17 at 12:13

Community

1
1

answered Jun 14 '12 at 09:12

Emond

50,210
11
84
115

+1 for nice suggestion, waiting for some better way otherwise i will implement this one and accept the answer... – Niranjan Singh Jun 14 '12 at 09:15

score 1 · Answer 2 · answered Jun 14 '12 at 14:22

There is a way to write this without so much code. You could create your own MouseDown event handler in your user control that hides the existing handler and within directly hooks each control on your UserControl. For example, here's the MouseDown handler for a UserControl that contains a Panel and a ListBox:

// MouseDown event handler within UserControl
public new event MouseEventHandler MouseDown
{
    add 
    { 
        panel1.MouseDown += value;
        listBox1.MouseDown += value;
    }
    remove 
    { 
        panel1.MouseDown -= value;
        listBox1.MouseDown -= value;
    }
}

If you had more controls on your UserControl, you just add them to each section.

Your call in your parent WinForm must hook the MouseDown event for your UserControl like this:

myUserControl1.MouseDown += myUserControl1_MouseDown;

score 0 · Answer 3 · answered Jun 14 '12 at 09:26

namespace WindowsFormsApplication1
{
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
            this.OnUCMouseUp += new MouseEventHandler(UserControl1_OnUCMouseUp);
            panel1.MouseUp += new MouseEventHandler(panel1_MouseUp);
        }

        void UserControl1_OnUCMouseUp(object sender, MouseEventArgs e)
        {
            MessageBox.Show("From userControl");
        }

        void panel1_MouseUp(object sender, MouseEventArgs e)
        {
            InvokeMouseUp(this, e);
        }
        public event MouseEventHandler OnUCMouseUp;
        protected void InvokeMouseUp(object sender, MouseEventArgs e)
        {
            if (this.OnUCMouseUp != null)
                this.OnUCMouseUp(sender, e);
        }
    }
}

well, nice work but it is not desired way to implement. lots code lines added in this way.. — Niranjan Singh, Jun 14 '12 at 09:44

How to check if Mouse Click is in User Control without handling child control events?

3 Answers3