Article	60000357
Type	HowTo
Product	Engine
Version	6
Date Added	12/18/2007
Submitted by	Florian Rappel
Keywords

Subject

Set the delay time before displaying a tooltip

Summary

We use the VDraw tooltips for some drawing objects in our software. Today the tooltip were displayed exactly in the moment when the cursor moves over an object. Is it possible to set a delay (for example 2 seconds) before the tooltip were displayed?

Solution

This can be achieved with code within your application as the sample shown below. You will need a Timer which will be started on the MouseMove event and on the timer code there will be a code that will show the tooltip. This way the tooltip will be shown after the timeinterval that is set to the timer and the mouse is not moving over the entity.

//On Form Load we initialize the events.
//Note that EnableTooltips is set to False!!!!!
private void Form1_Load(object sender, EventArgs e)
{
//........
vdFramedControl.BaseControl.MouseMove += new MouseEventHandler(BaseControl_MouseMove);
mTimer.Interval = 5000;
mTimer.Tick += new EventHandler(mTimer_Tick);
vdFramedControl.BaseControl.ActiveDocument.EnableToolTips = false;
mTimer.Start();
}

//On mouse move we constantly reset the timer
void BaseControl_MouseMove(object sender, MouseEventArgs e)
{
mTimer.Stop();
mTimer.Start();
}

//On the timer's code we write the following in order to show the tooltip
void mTimer_Tick(object sender, EventArgs e)
{
if (!vdFramedControl.BaseControl.Visible) return;
if (vdFramedControl.BaseControl.ActiveDocument.ActiveLayOut.OverAllActiveActions.Count > 1) return;
VectorDraw.Actions.BaseAction action = vdFramedControl.BaseControl.ActiveDocument.ActiveLayOut.OverAllActiveAction;
if (!action.IsVisible) return;
vdFramedControl.BaseControl.ActiveDocument.EnableToolTips = true;
//This will show the tooltip if there is any!!!!
action.MouseMove(new MouseEventArgs(MouseButtons.None, 0, action.GdiMouseLocation.X, action.GdiMouseLocation.Y, 0), action.MouseLocation, action.OrthoPoint);
vdFramedControl.BaseControl.ActiveDocument.EnableToolTips = false;
}

//Don't forget to do the finalizations at the closing of the application
protected override void OnClosing(CancelEventArgs e)
{
mTimer.Tick -= new EventHandler(mTimer_Tick);
vdFramedControl.BaseControl.MouseMove -= new MouseEventHandler(BaseControl_MouseMove);
mTimer.Stop();
mTimer.Dispose();
base.OnClosing(e);
}