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Provision to drag the annotation text in annotation tool
Posted: Thu Mar 16, 2006 9:44 am
by 9788742
There should be a feature which will allow the user/client to drag the annotation text (label) and the connecting line should move automatically.
I know that we can stretch/drag the connecting line but there is no way to drag the annotation text.
Thanks
Posted: Fri Mar 17, 2006 10:10 am
by narcis
Hi Lakshmi,
This can actually be easily done doing something like this:
Code: Select all
private void Form1_Load(object sender, EventArgs e)
{
line1.FillSampleValues();
Bitmap bmp = tChart1.Bitmap; //Trick to force the chart being drawn and annotation arrow being positioned
}
private bool StartDrag = false;
private void annotation1_Click(object sender, MouseEventArgs e)
{
StartDrag = !StartDrag;
}
private void tChart1_MouseMove(object sender, MouseEventArgs e)
{
if (StartDrag)
{
annotation1.Left = e.X;
annotation1.Top = e.Y;
}
}
private void tChart1_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
{
annotation1.Callout.Arrow.Visible = true;
annotation1.Callout.XPosition = line1.CalcXPos(5);
annotation1.Callout.YPosition = line1.CalcYPos(5);
}