Hi Guys.I am working an an extension for ArcGIS Desktop in Visual Studios and .net 4.0. I Have created a working shell with a few buttons and some basic code to make sure everything will work as I like and am stuck on one last thing.I would like to add a combo box to the toolbar (like the Map Scale drop down in the "Standard" toolbar of arc). I found the form-based sample solution provided by ESRI called GraphicsLayerToolControl which has been a big help.But here is where I am stuck. I am trying to do it all in WPF and the MVVM pattern. I created a UserControl like in the sample but when I try to complete the command class for it I cannot properly build the required hWnd property. Since this is WPF there is no native handle to be had. I thought I could use the Interop function HwndSource.FromVisual to get it but that comes back null. I think the problem is there is no equivalent "CreateControl()" function in WPF that the forms-based example relies on to force creation of the control This is what that looks like: public int hWnd
{
get
{
//pass the handle of the usercontrol
if (null == m_graphicsLayerListCtrl)
{
m_graphicsLayerListCtrl = new GraphicsLayersListCtrl();
m_graphicsLayerListCtrl.CreateControl(); //CANNOT FIND ANYTHING SIMILAR IN WPF
}
return m_graphicsLayerListCtrl.Handle.ToInt32();
}
}
Is there a way to make this work or am I forced to do a forms-based usercontrol?ThanksErnie
