ArcGIS Engine Developer Guide

BUILDING APPLICATIONS WITH C++ AND CONTROL WIDGETS
g_ipTransEventHelper = 0;
delete g_transEvents;
g_ipMapControlEvent2Helper->UnadviseEvents();
g_ipMapControlEvent2Helper->Shutdown();
g_ipMapControlEvent2Helper = 0;
delete g_mapEvents;
16. Update the makefile to reflect the MapControlEvents source file. Also, add a
dependencies list for MapControlEvents.o and add the MapControlEvents class
to the MapViewer.o dependencies list.
17. Compile and run the application. Use the map navigation tools that you
added earlier to change the extent of the focus map in the
PageLayoutControl. The new extent is drawn on the MapControl as a red
rectangle.
Creating a custom tool
You are not limited to placing the ArcGIS Engine commands and tools on the
ToolbarControl. Next, you will create a custom tool that adds to the
PageLayoutControl a text element containing today’s date at the location of a
mouse click. However, this tool will be created as a generic tool so that it could
instead work with the MapControl and ToolbarControl as well as the
PageLayoutControl.
The code for this custom tool is available with the rest of this scenario’s source
code. If you want to use the custom command directly, rather than creating it
yourself, copy the AddDate.h and AddDate.cpp files, along with the Res folder
from the MapViewer folder, to the directory you are using for this scenario and
proceed to Step 5.
392 • ArcGIS Engine Developer Guide