MapViewer: How to use Static Top Overlay API?

Hi. The function CreateDprRenditionStaticTopOverlay needs a DPR rendition as its first parameter. You can specify a local path or a URL to a DPR file/rendition. This is probably why it fails.

If you want to display static text, I think you should instead use CreateEditableStaticTopOverlay . Looking at the documentation, that function requires 7 parameters like this:

CreateEditableStaticTopOverlay (isViewRotationDependent, predefinedScreenPosition, pixelWidth, pixelHeight, originOffsetX, originOffsetY, requestedOverlayIdx)

An example call would then be:

CreateEditableStaticTopOverlay(FALSE, 9, 100, 12, 10, 10, &OverlayIdx);

OverlayIdx is the index of the overlay you just created, as a return value. You will then use that index in the element creation calls (AddStaticTopOverlayTextElement, etc).

hope this helps,

  Martin

Hi,

Here is an javascript example to display text as static top overlay in the Map Viewer: 

var overlayId = document.MapViewerControl.CreateEditableStaticTopOverlay(5, 300, 30, 0, 0);var rendId = document.MapViewerControl.AddStaticTopOverlayTextElement(overlayId, document.MapViewerControl.VBArrayFromJavaScriptArray(new Array(0,0)), "Copyright  2011", "Aerial", 30, 0x0000ff, 1.0, 2);

Sylvain

By the way, let me apologize for posting the wrong function signature. I think Sylvain has it right here. I looked it up in the wrong documementation...

   Martin

var overlayId = document.MapViewerControl.CreateEditableStaticTopOverlay(5, 300, 30, 0, 0);

This is exactly what I tried. It always throws an exception: H_RESULT E_FAIL. I tried it with many different parameters to test but always got an exception.

Did you load a map definition prior to use the top overlay methods?  If a map is not loaded, I also get an error.

Sylvain