mouse position give wrong co-ordinates within group box

Question

When I give mouse potion to label, it appear much down and left to the current mouse position. Label inside one group box and group box contain more then 50% of the form area. Group Box is compulsory here. I'm trying with this code.

int xX, yY = 0;

protected override void OnMouseMove(MouseEventArgs e) {
    base.OnMouseMove(e);
    xX = e.X;
    yY = e.Y;
    lbl.Left = xX;
    lbl.Top = yY;
}

Answer 1

It looks like you want to move the label within the boundaries of a panel, so you should add an event handler for the MouseMove event of the panel.

public Form1()
{
    InitializeComponent();

    panel1.MouseMove += panel1_MouseMove;
}

void panel1_MouseMove(object sender, MouseEventArgs e)
{
    lbl.Location = e.Location;
}

Answer 2

public frmChequeFormat()
    {
        InitializeComponent();
        gbCheque.MouseMove += gbCheque_MouseMove;
    }
    bool mDown = false;
    private void gbCheque_MouseMove(object sender, MouseEventArgs e)
    {
        if (mDown)
        {
            label13.Location = e.Location;
        }
    }
    private void label13_MouseDown(object sender, MouseEventArgs e)
    {
        mDown = true;
    }
    private void label13_MouseUp(object sender, MouseEventArgs e)
    {
        mDown = false;
    }