ArcGIS Engine Developer Guide

BUILDING APPLICATIONS WITH C++ AND CONTROL WIDGETS
HRESULT OnMouseMove(LONG Button, LONG Shift, LONG X, LONG Y);
HRESULT OnMouseUp(LONG Button, LONG Shift, LONG X, LONG Y);
HRESULT OnDblClick();
HRESULT OnKeyDown(LONG keyCode, LONG Shift);
HRESULT OnKeyUp(LONG keyCode, LONG Shift);
HRESULT OnContextMenu(LONG X, LONG Y, VARIANT_BOOL* handled);
HRESULT Refresh(OLE_HANDLE ole);
HRESULT Deactivate(VARIANT_BOOL* complete);
private:
IHookHelperPtr m_ipHookHelper;
OLE_HANDLE m_hBitmap;
OLE_HANDLE m_hCursor;
};
#endif // #define FULLEXTENT_H_
4. Open a new file in your text editor, and name it AddDate.cpp. Here you will
implement your custom tool.
a. Include AddDate.h.
#include "AddDate.h"
b. In the constructor, you will load the bitmap and cursor, as well as create the
IHookHelper. If you want to use the provided icon and mouse cursor, copy
the resources from arcgis/developerkit/samples/
Developer_Guide_Scenarios/ArcGIS_Engine/
Building_an_ArcGIS_Control_Application/Map_Viewer/Res/ to your
code directory.
#include "AddDate.h"
AddDateTool::AddDateTool()
{
m_ipHookHelper.CreateInstance(CLSID_HookHelper);
// Load the cursor
ISystemMouseCursorPtr ipSysMouseCur(CLSID_SystemMouseCursor);
ipSysMouseCur->LoadFromFile(CComBSTR(L"../Res/date.cur"));
OLE_HANDLE hTmp;
HRESULT hr = ipSysMouseCur->get_Cursor(&hTmp);
if (SUCCEEDED(hr))
{
m_hCursor = hTmp;
}
// Load the bitmap
IRasterPicturePtr ipRastPict(CLSID_BasicRasterPicture);
IPicturePtr ipPict;
hr = ipRastPict->LoadPicture(CComBSTR(L"../Res/date.bmp"), &ipPict);
if (SUCCEEDED(hr))
{
OLE_HANDLE hBitmap;
394 • ArcGIS Engine Developer Guide