How to implement a custom UI control

I need to display interactive maps on the Windows SAP GUI. The maps
are dynamically generated and fetched from an external map server using ABAP.
The interactive map should be scrollable and allow the user to select a single or multiple POIs (Point Of Interest) using the mouse and drag and drop them into
a table and/or tree. There should be an visual indication on the map
for selected POIs and a tooltip displaying additional information should
pop up if the cursor is placed above a POI. I've implemented all this using
SWT / Java already which was pretty straight forward.
I looked at the CL_GUI_PICTURE control but it seems that I would need more
events (such as OnMouseMove, OnLeft/RightButtonDown, OnLeft/RightButtonUp,
OnDrag) in order to implement this. I think that the CL_GUI_PICTURE has
just a few events in order to minimize client/server interactions.
What are my options to implement such an interactive map on SAP GUI?
I found this blog where a custom control is implemented using ActiveX:
/people/thomas.jung3/blog/2004/09/01/using-net-windows-controls-in-the-abap-control-framework
Is this the way to go? Is there an official developers guide for custom
UI controls from SAP?

Hi Dominik,
Sorry but I don't have an answer - I have been trying to solve the same problem for a while now. I even contacted Thomas Jung directly, but was not able to solve the event sink\handler problem. Although I did manage to re-create his example and display a .NET VB Textbox within the SAP GUI...
If you do manage to get any further - please let me know how you managed to get the event handling to work...
Tx,
N

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"Bob" <[email protected]> wrote:
>
Relatively simple question, but I am having a lot of trouble with this.
Documentation
alludes to this being possible and easy, but never says how (and the
only tutorials
I can find describe creating a custom java control in the same project
where they
are used):
"You can design a custom control for use in one project, or you can design
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control for easy reuse in multiple projects." (from WLS docs on Java
Controls)
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files are
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