Question

How do I obtain the (Grid) Node that was double-clicked?

I’ve tried a few things including:

 void GanttView_OnGridDoubleClick(object sender, EventArgs e)
    {
      Point p = PointToClient(MousePosition);
      Cell c = this.Grid.GridStructure.CellFromXY(p.X,p.Y);
      if (c != null)
      {
      }
  
    }

The cell returned is always null, I have a double-click handler on the timeitemarea and I’m able to locate the correct TimeItem no problem..

Answer

Your code is correct but the PointToClient translates to Gantt-coords and not grid coords. change to this:

      Point p = this.Grid.PointToClient(MousePosition);

Answer

Correct. This is something of an oversight. Based on your finding we added a new property to CellLayout called FontColorSelected that controls the font color on a selected cell.

Please contact support if you need this update asap (we have it in the lab). Also please state if you use VS2005 or 2003.

Question

Instead of panning left and right a little bit at a time, I want one click on the pan buttons to move forward the distance X where X = gantt.datescaler.stop – gantt.datescaler.start.
In other words, if your current zoom level is showing 2 days, I want a click on one of those buttons to move forward another two days.

Thanks!

Answer

Go like this:

    private void buttonJumpLongerInScroll_Click(object sender, System.EventArgs e)
    {
     
      gantt1.DateScaler.OnBeforeScaleOrSpanChange+=new BeforeScaleOrSpanChangeEventHandler(DateScaler_OnBeforeScaleOrSpanChange);

    }
    
    private void DateScaler_OnBeforeScaleOrSpanChange(DateScaler dateScaler, BeforeScaleOrSpanChangeArgs e)
    {
      if (!e.IsZoom)
      {
        TimeSpan jumptime=dateScaler.StopTime.Subtract(dateScaler.StartTime);
        if (e.NewStartTime<dateScaler.StartTime)
        {
          e.NewStartTime=dateScaler.StartTime.Subtract(jumptime);
          e.NewStopTime=dateScaler.StopTime.Subtract(jumptime);
        }
        else
        {
          e.NewStartTime=dateScaler.StartTime.Add(jumptime);
          e.NewStopTime=dateScaler.StopTime.Add(jumptime);
        
        }
      }
    }

Question

Hi, I have buy the GTP.NET rel 2.0.13 now I saw the release 2.3. It is a free  available for us?
Thanks

Answer

Yes the 2.3 release uses the same keys so you can download and install the newer version.

Question

Id like to to prevent a user from editing grid cells.  The only way Ive been able to do this is set:

GridNode.GridControl.Enabled = false

Unfortunately this also prevents the user from scrolling the grid.  Is there a way where I can leave the grid control enabled, but prevent the user from changing the text in the nodes?

Answer

Yes, that is not the recommended approach. Instead you should implement the OnBeforeEditCell event, and set the e.editAllowed=false, it will do the trick much better.

And also it will allow you to evaluate the cell so that it can be made editable under certain dynamic circumstances that you decide.

If you want to dis-allow edit all together you can simple set the GridColumns[x].Readonly=true.