CODEWITHSUNDEEP
.netwinforms
Niranjan Singh
Niranjan Singh

Reputation: 18290

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

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.

Upvotes: 3

Views: 5037

Answers (3)

Brad Rem
Brad Rem

Reputation: 6026

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;

Upvotes: 1

Angshuman Agarwal
Angshuman Agarwal

Reputation: 4856

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);
        }
    }
}

Upvotes: 0

Emond
Emond

Reputation: 50672

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.

Upvotes: 4

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