I have made a graph and it shows the value every time I move the cursor on any point. I use zedGraphControl1.IsShowPointValues = true; for that.
The problem is the ToolTip that is shown from it is blinking. After looking around on the internet, I found this forum thread: http://sourceforge.net/p/zedgraph/patches/87/
Is there anyone who knows how to use that patch? or is there any other solution?
The patch is a text file,two version's differences file,you can add a file extension as Tooltip_Flicker.patch.cs you can open it with texteditor(eg.Notepad++,Visual studio)
So you need download the source code and modify the file as patch file then rebuild it.Good Luck for you!
The content as follow:
Index: source/ZedGraph/ZedGraphControl.Events.cs
===================================================================
--- source/ZedGraph/ZedGraphControl.Events.cs (revision 451)
+++ source/ZedGraph/ZedGraphControl.Events.cs (working copy)
@@ -713,15 +713,19 @@
{
if ( nearestObj is CurveItem && iPt >= 0 )
{
- CurveItem curve = (CurveItem)nearestObj;
+ CurveItem curve = (CurveItem)nearestObj;
+ string label = "";
// Provide Callback for User to customize the tooltips
if ( this.PointValueEvent != null )
{
- string label = this.PointValueEvent( this, pane, curve, iPt );
+ label = this.PointValueEvent( this, pane, curve, iPt );
if ( label != null && label.Length > 0 )
- {
- this.pointToolTip.SetToolTip( this, label );
- this.pointToolTip.Active = true;
+ {
+ if ( this.pointToolTip.GetToolTip( this ) != label )
+ {
+ this.pointToolTip.SetToolTip( this, label );
+ this.pointToolTip.Active = true;
+ }
}
else
this.pointToolTip.Active = false;
@@ -730,9 +734,8 @@
{
if ( curve is PieItem )
- {
- this.pointToolTip.SetToolTip( this,
- ( (PieItem)curve ).Value.ToString( _pointValueFormat ) );
+ {
+ label = ( (PieItem)curve ).Value.ToString( _pointValueFormat );
}
// else if ( curve is OHLCBarItem || curve is JapaneseCandleStickItem )
// {
@@ -750,7 +753,7 @@
PointPair pt = curve.Points[iPt];
if ( pt.Tag is string )
- this.pointToolTip.SetToolTip( this, (string)pt.Tag );
+ label = (string)pt.Tag;
else
{
double xVal, yVal, lowVal;
@@ -766,14 +769,18 @@
string yStr = MakeValueLabel( curve.GetYAxis( pane ), yVal, iPt,
curve.IsOverrideOrdinal );
- this.pointToolTip.SetToolTip( this, "( " + xStr + ", " + yStr + " )" );
+ label = string.Format( "( {0}, {1} )", xStr, yStr );
//this.pointToolTip.SetToolTip( this,
// curve.Points[iPt].ToString( this.pointValueFormat ) );
}
- }
-
- this.pointToolTip.Active = true;
+ }
+
+ if ( this.pointToolTip.GetToolTip( this ) != label )
+ {
+ this.pointToolTip.SetToolTip( this, label );
+ this.pointToolTip.Active = true;
+ }
}
}
else
@@ -791,15 +798,19 @@
{
GraphPane pane = _masterPane.FindPane( mousePt );
if ( pane != null && pane.Chart._rect.Contains( mousePt ) )
- {
+ {
+ string label = "";
// Provide Callback for User to customize the tooltips
if ( this.CursorValueEvent != null )
{
- string label = this.CursorValueEvent( this, pane, mousePt );
+ label = this.CursorValueEvent( this, pane, mousePt );
if ( label != null && label.Length > 0 )
- {
- this.pointToolTip.SetToolTip( this, label );
- this.pointToolTip.Active = true;
+ {
+ if ( this.pointToolTip.GetToolTip( this ) != label )
+ {
+ this.pointToolTip.SetToolTip( this, label );
+ this.pointToolTip.Active = true;
+ }
}
else
this.pointToolTip.Active = false;
@@ -812,8 +823,12 @@
string yStr = MakeValueLabel( pane.YAxis, y, -1, true );
string y2Str = MakeValueLabel( pane.Y2Axis, y2, -1, true );
- this.pointToolTip.SetToolTip( this, "( " + xStr + ", " + yStr + ", " + y2Str + " )" );
- this.pointToolTip.Active = true;
+ label = string.Format( "( {0}, {1}, {2} )", xStr, yStr, y2Str );
+ if ( this.pointToolTip.GetToolTip( this ) != label )
+ {
+ this.pointToolTip.SetToolTip( this, "( " + xStr + ", " + yStr + ", " + y2Str + " )" );
+ this.pointToolTip.Active = true;
+ }
}
}
else
