ArcGIS Engine Developer Guide

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C++ APPLICATION PROGRAMMING INTERFACE Step 6: Begin the event handling loop The next step for this application is to idle until a user generates an event. gtk_widget_show_all(window); gtk_main(); Step 7: Shut down the application As mentioned above, this application will run indefinitely unless it receives an event that tells it to do otherwise. To allow proper shutdown of the application, you will handle the signals that tell you the window is going to be closed. After the widgets are shown and before the event loop is started by gtk_main, you will listen for those signals: gtk_widget_show_all(window); g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(delete_event), NULL); g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy_event), NULL); You will also provide the callbacks DeleteEvent and DestroyEvent that have the application close when the signals are recieved. As for the other callback, make sure you place a forward declaration before main. static void destroy_event(GtkWidget *widget, gpointer data) { gtk_main_quit(); } For ArcGIS Engine C++ programming, you must call AoExit before returning. You must call AoUninitialize before shutting down the application with AoExit. static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data) { return FALSE; // must return false to trigger destroy event for window } Trying it out To compile your GTK program, you will need to link against libraries for GTK, Xt, and X11, in that order. If you are programming on Solaris, you will compile with the Sun Workshop (Forte), and if you are programming on Linux you will use GCC. Solaris: CC pbExample.cpp -o pbExample ‘pkg-config gtk+-2.0 —cflags —libs‘ Linux: g++ pbExample.cpp -o pbExample ‘pkg-config gtk+-2.0 —cflags —libs‘ Run the program: ./pbExample As you click the button, you will see the number of the button you pressed appear in your terminal window. Now that you have a feeling for GTK programming, look at the C++ samples for GTK, and see these steps applied there. 244 • ArcGIS Engine Developer Guide
C++ APPLICATION PROGRAMMING INTERFACE Additional resources • www.gtk.org GTK ARCGIS control programming The Solaris and Linux SDK also provides a set of GTK widgets that may be used to embed the ArcGIS controls in a GTK application. Due to the limitations of GTK, this code will only run on Solaris and Linux systems. If visual components are needed on Windows, you will need to use Visual C++, the COM API, and ActiveX controls. Header files For an ArcGIS GTK control application, you will need to include Ao/ GtkControls.h in addition to your ArcGIS Engine and GTK includes (ArcSDK.h and gtk/gtk.h, respectively). Control types and their details Control Globe Control Map Control PageLayout Control Reader Control Scene Control TOC Control Toolbar Control ProgID AoPROGID_GlobeControl AoPROGID_MapControl AoPROGID_PageLayoutControl AoPROGID_ReaderControl AoPROGID_SceneControl AoPROGID_TOCControl AoPROGID_ToolbarControl Interface Type IGlobeControl IMapControl3 IPageLayoutControl IARControl ISceneControl ITOCControl IToolbarControl API functions and arguments • For each ArcGIS Engine Control interface, there is a smart pointer defined for you. Instead of IMapControl3*, you can use IMapControl3Ptr. • gtk_axctl_new is used to create the GTK ArcGIS Control Widget. GtkWidget *gtk_axctl_new(ControlDataPtr cd); • gtk_axctl_get_interface is used to get the control’s interface pointer. HRESULT gtk_axctl_get_interface(GtkWidget *axctl, IUnknown **ppUnk); • gtk_axctl_initialize_message_queue is used to enable MainWin message delivery before starting the main GTK loop with gtk_main. void gtk_axctl_initialize_message_queue(); Control widget creation example The following example demonstrates creating and placing a map control that fills the entire GTK form window (defined outside this code snippet) and retrieves a smart pointer for the control. The bold sections highlight functions and resources discussed above. // ArcObjects Headers // Engine #include // Controls #include Chapter 4 • Developer environments • 245
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ArcGIS ® Engine Developer Guide Ar
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Contents CHAPTER 1: INTRODUCING ARC
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1 Introducing ArcGIS Engine ESRI ®
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ARCGIS 9 OVERVIEW ArcGIS Server Arc
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ARCGIS 9 OVERVIEW ArcGIS Engine and
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OVERVIEW OF ARCGIS ENGINE Chapter 3
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OVERVIEW OF A RCGIS ENGINE The Stre
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WHO CAN USE ARCGIS ENGINE? authored
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ARCGIS ENGINE CAPABILITIES SPATIAL
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ARCGIS ENGINE CAPABILITIES NETWORK
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GETTING STARTED Throughout most of
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USING THIS BOOK This book, ArcGIS E
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DEVELOPER RESOURCES ESRI DEVELOPER
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ARCGIS SOFTWARE ARCHITECTURE For a
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ARCGIS SOFTWARE ARCHITECTURE ESRI h
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ARCGIS SOFTWARE ARCHITECTURE Althou
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ARCGIS APPLICATION PROGRAMMING INTE
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ARCGIS ENGINE LIBRARIES Carto Conta
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ARCGIS ENGINE LIBRARIES cluded in t
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ARCGIS ENGINE LIBRARIES 22 Spatial-
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ARCGIS ENGINE LIBRARIES NETWORKANAL
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3 Developing with ArcGIS controls A
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WORKING WITH THE ARCGIS CONTROLS me
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WORKING WITH THE ARCGIS CONTROLS Ar
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WORKING WITH THE ARCGIS CONTROLS If
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WORKING WITH THE ARCGIS CONTROLS Li
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BUILDING APPLICATIONS WITH THE ARCG
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THE MICROSOFT COMPONENT OBJECT MODE
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DEVELOPING WITH ARCOBJECTS ArcGIS a
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DEVELOPING WITH A RCOBJECTS Accessi
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DEVELOPING WITH A RCOBJECTS As an e
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DEVELOPING WITH A RCOBJECTS COM App
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DEVELOPING WITH A RCOBJECTS The Cus
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THE V ISUAL BASIC 6 ENVIRONMENT Use
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THE V ISUAL BASIC 6 ENVIRONMENT Whi
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THE V ISUAL BASIC 6 ENVIRONMENT Pri
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THE V ISUAL BASIC 6 ENVIRONMENT Tha
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THE V ISUAL BASIC 6 ENVIRONMENT per
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THE V ISUAL BASIC 6 ENVIRONMENT If
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THE V ISUAL BASIC 6 DEVELOPMENT ENV
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VISUAL C++ IXxxImpl CComXxxThreadMo
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VISUAL C++ Linking ATL code One of
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VISUAL C++ removal would result in
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VISUAL C++ switches are used to cha
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VISUAL C++ 4. To create the noncrea
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VISUAL C++ Grimes, Richard, Reilly
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VISUAL C++ IFooPtr ipFoo; HRESULT h
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VISUAL C++ expected. It is better t
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VISUAL C++ Here are some suggestion
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VISUAL C++ Symbol d, i Format signe
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VISUAL C++ Loading the following sh
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VISUAL C++ #import "C:\Program File
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VISUAL C++ Make sure dialog boxes t
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VISUAL C++ Creating an MFC dialog b
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VISUAL C++ This environment does no
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VISUAL C++ Connection point mechani
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VISUAL C++ The following issues wit
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VISUAL C++ { } DECLARE_REGISTRY_RES
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VISUAL C++ 5. Clicking OK will modi
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VISUAL C++ delete[] pvars; // Clean
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VISUAL C++ // Create dialog class o
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.NET APPLICATION PROGRAMMING INTERF
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JAVA APPLICATION PROGRAMMING INTERF
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BUILDING APPLICATIONS WITH ACTIVEX
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BUILDING APPLICATIONS WITH VISUAL J
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BUILDING APPLICATIONS WITH WINDOWS
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BUILDING APPLICATIONS WITH C++ AND
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BUILDING A COMMAND-LINE JAVA APPLIC
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BUILDING A COMMAND-LINE C++ APPLICA
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A Reading the object model diagrams
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CLASSES AND RELATIONSHIPS There are
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CLASSES AND RELATIONSHIPS N-ary ass
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INTERFACES AND MEMBERS error messag
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PUTTING IT TOGETHER—AN EXAMPLE IW
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ARCGIS SOFTWARE DEVELOPER KIT The A
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ARCGIS SOFTWARE DEVELOPER KIT • E
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C Conver erting personal geodatabas
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CONVERTING DATA FOR USE WITH THE GI
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CONVERTING DATA FOR USE WITH THE GI
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D Installing ArcGIS Engine Runtime
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INSTALLING ARCGIS ENGINE RUNTIME ON
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E Glossary The following is a gloss
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GLOSSARY ASP.NET assembly associati
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GLOSSARY composition computer-aided
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GLOSSARY FGDC framework GDB GDI Geo
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GLOSSARY JSF JSP JSTL late binding
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GLOSSARY the EXE in which they are
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GLOSSARY server account server cont
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GLOSSARY URL usage time utility COM
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A Index Abstract class 61 defined 4
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Building applications with ActiveX
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debugging defined 495 Deeply statef
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IIS 143 ILineSymbol interface 292,
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OLE automation. See Microsoft Compo
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SXD defined 504 Synchronization def
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XSLT defined 506 Index • 519
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