ArcGIS Engine Developer Guide

C++ APPLICATION PROGRAMMING INTERFACE
• mwCtlWidgetClass—argument to give the widget class for all ActiveX control
widgets
• MwNprogID—argument to pair with AoPROGID_Control
Control widget creation example
The following example demonstrates creating a map control that fills the entire
Motif mainForm (defined outside this code snippet) and retrieves a smart pointer
for the control. The bold sections highlight functions and resources discussed
above. The #define statements are necessary to prevent type name conflicts between
X and ArcGIS Engine.
// Motif Headers
#define String esriXString
#define Cursor esriXCursor
#define Object esriXObject
#define ObjectClass esriXObjectClass
#include
#include
#include
#include
#undef String
#undef Cursor
#undef Object
#undef ObjectClass
// ArcObjects Headers
// Engine
#include
// Controls
#include
int main(int argc, char* argv[])
{
...
Widget mapWidget = XtVaCreateWidget("mapWidget",
mwCtlWidgetClass, mainForm,
XmNtopAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
XmNleftAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_FORM,
MwNprogID, AoPROGID_MapControl,
NULL);
IMapControl3Ptr ipMapControl;
HRESULT hr = MwCtlGetInterface(mapWidget, (IUnknown**)&ipMapControl);
...
}
240 • ArcGIS Engine Developer Guide