ArcGIS Engine Developer Guide

BUILDING APPLICATIONS WITH C++ AND CONTROL WIDGETS
b. Place the implementation for this class into CustomizeDialogEvents.cpp,
making sure you include the header file for the class. Implement the functions
so that when the dialog box is opened, the toolbar enters the customize
state, and when it is closed, the toolbar leaves that state. When it is
closed, also make sure to set the toggle button to false, as the dialog box
may be closed with a close button that is on it.
#include "CustomizeDialogEvents.h"
HRESULT CustomizeDialogEvents::OnStartDialog()
{
g_ipToolbarControl->put_Customize(VARIANT_TRUE);
return S_OK;
}
HRESULT CustomizeDialogEvents::OnCloseDialog()
{
g_ipToolbarControl->put_Customize(VARIANT_FALSE);
XmToggleButtonSetState(g_customizeToggle, false, true);
Although the class itself is Motif or GTK specific,
listening for either one is done the same way.
return S_OK;
}
c. Like the other event classes, these events must be listened for. Start by
including the header file in MapViewer.h.
#include "MapControlEvents.h"
#include "CustomizeDialogEvents.h"
#include "AddDate.h"
d. Declare variables for those events at the top of MapViewer.cpp.
IEventListenerHelperPtr g_ipMapControlEvent2Helper;
CustomizeDialogEvents* g_customizeEvents;
IEventListenerHelperPtr g_ipCustomizeEventHelper;
e. Listen for them right after listening for MapControl events.
g_ipMapControlEvent2Helper->AdviseEvents(ipMapControl, NULL);
g_customizeEvents = new CustomizeDialogEvents();
g_ipCustomizeEventHelper.CreateInstance(CLSID_CustomizeDialogEventsListener);
g_ipCustomizeEventHelper->Startup(
static_cast (g_customizeEvents));
CComBSTR bsGUID;
::StringFromIID(IID_ICustomizeDialogEvents, &bsGUID);
IUIDPtr ipUID(CLSID_UID);
ipUID->put_Value(CComVariant(bsGUID));
g_ipCustomizeEventHelper->AdviseEvents(g_ipCustomizeDialog, ipUID);
f. Clean up the events in CloseAppCallback.
// End event listening
g_ipPageLayoutControlEventHelper->UnadviseEvents();
g_ipPageLayoutControlEventHelper->Shutdown();
406 • ArcGIS Engine Developer Guide