Article	60000716
Type	HowTo
Product	Engine
Version	6
Date Added	12/18/2008
Submitted by	Pushpak
Keywords

Subject

How can I change the color of the Viewport when the user activates it

Summary

How can I change the color of the Viewport when the user activates it by double-click ?

Solution

In the "Collections" sample add the ActionLayoutActivated event and write a code like (see also the comments) :

 

VectorDraw.Professional.vdObjects.vdColor oldcolor = new VectorDraw.Professional.vdObjects.vdColor(); // there will store the color before the "highlight"
VectorDraw.Professional.vdObjects.vdHandle deactivated_Viewport_handle = new VectorDraw.Professional.vdObjects.vdHandle(); // The handle of the Viewport we changed
void ActiveDocument_ActionLayoutActivated(object sender, VectorDraw.Professional.vdPrimaries.vdLayout deactivated, VectorDraw.Professional.vdPrimaries.vdLayout activated)
{// fires when the Layout or the Viewport changes
if (activated.ActiveViewPort == null) // Run when MODEL is activated that happens when the viewport is activated or user returns to Model.
{
    if (deactivated.ActiveViewPort != null) // the deactiveted vieport is the one that the use dbl-clicked
    {
        oldcolor.CopyFrom(deactivated.ActiveViewPort.PenColor); // store the color
        deactivated.ActiveViewPort.PenColor.SystemColor = Color.Red; // change the color
        deactivated.ActiveViewPort.Update();
        deactivated.ActiveViewPort.Invalidate();
        deactivated_Viewport_handle = deactivated.ActiveViewPort.Handle; // store the handle
    }
    if ((deactivated.ActiveViewPort == null) && (deactivated_Viewport_handle.Value != 0)) // This happens when the Viewport is not "active"
    {//create a vdViewport and set it to the viewport that was deactivated
        VectorDraw.Professional.vdFigures.vdViewport deactiViewport = new VectorDraw.Professional.vdFigures.vdViewport();
        deactiViewport= vdFramedControl1.BaseControl.ActiveDocument.FindFromHandle(deactivated_Viewport_handle, typeof(VectorDraw.Professional.vdPrimaries.vdFigure)) as VectorDraw.Professional.vdFigures.vdViewport;
        deactiViewport.PenColor.CopyFrom(oldcolor); // change the color back
        if (deactiViewport.ClipObj != null)
        {
            deactiViewport.ClipObj.PenColor.CopyFrom(oldcolor); // to the ClipObj too
            deactiViewport.ClipObj.Update();
            deactiViewport.ClipObj.Invalidate();
        }
        deactiViewport.Update();
        deactiViewport.Invalidate();
        deactivated_Viewport_handle= new VectorDraw.Professional.vdObjects.vdHandle(0); // set the handle to 0
    }
}
}