mouse event

Hello Everybody,
have Problems with following code. The Event does not raise, when i click on a button.
i have it also testet with other Events like dblClick and so on.. but nothing happens.
thanks for help.

zenOn.DynPictures zScreens = new zenOn.DynPictures();
// i also tested with   zenOn.DynPictures zScreens;   without the new statement
 
void ThisProject_Active()
{
    //Create any required API-References here (Event handlers, OnlineContainers, local references,etc. )
    // << TODO: Add Initialization code here >>
 
    zScreens.ElementLeftButtonUp += new zenOn.ElementLeftButtonUpEventHandler(zScreens_ElementLeftButtonUp);
 
}
 
void zScreens_ElementLeftButtonUp(zenOn.IDynPicture obDynPicture, zenOn.IElement obElement, int lPosX, int lPosY, int lButton)
{
    //Do something here
}
 
void ThisProject_Inactive()
{
    //Release all API-References here (Event handlers, OnlineContainers, local references, etc. )
    // << TODO: Add Clean-up code here >>
    zScreens.ElementLeftButtonUp -= new zenOn.ElementLeftButtonUpEventHandler(zScreens_ElementLeftButtonUp);
 
 
    //Final release and garbage collection of any API-Objects.
    FreeObjects();
}

This is a migrated post! Originally posted on 07.06.2013 by user armins. Please be aware that information can be outdated.