CreateLabel method

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Two things: I'm not assure why the documentation says use pITerrainLabel2
for the pointer. It doesn't seem to work pITerrainLabel does.

Two After the description there is a note about...

Remarks:

After this method call returns, the label is not yet visible on
the terrain. The client must first set either ITerrainLabel2::Text or
ITerrainLabel2::ImageFileName (or both) properties.

But there are no examples and the following code creates a
fatal exception:

 ITerrainLabel *pITerrain4 ;

    wchar_t wsz[] = L"There's the Count.";

    _bstr_t Id_ID;

    Id_ID = SysAllocString(wsz);

    pITerrain4 = pIObjectManager->CreateLabel(longVal,
latVal, 100, GroupID,  Id_ID);

//upto here no problems no errors

   pITerrain4->Text = Id_ID;

or //   pITerrain4->put_Text(Id_ID);

or //   pITerrain4->PutText(Id_ID);

All separately will not work.

Please Help

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glenngraham Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Skyline Customers Joined: January 17 2006 Location: United States Status: Offline Points: 5	Post Options Post Reply Quote glenngraham Report Post Thanks(0) Quote Reply Topic: CreateLabel method Posted: January 23 2006 at 3:10pm
	Two things: I'm not assure why the documentation says use pITerrainLabel2 for the pointer. It doesn't seem to work pITerrainLabel does. Two After the description there is a note about... Remarks: After this method call returns, the label is not yet visible on the terrain. The client must first set either ITerrainLabel2::Text or ITerrainLabel2::ImageFileName (or both) properties. But there are no examples and the following code creates a fatal exception: ITerrainLabel *pITerrain4 ; wchar_t wsz[] = L"There's the Count."; _bstr_t Id_ID; Id_ID = SysAllocString(wsz); pITerrain4 = pIObjectManager->CreateLabel(longVal, latVal, 100, GroupID, Id_ID); //upto here no problems no errors pITerrain4->Text = Id_ID; or // pITerrain4->put_Text(Id_ID); or // pITerrain4->PutText(Id_ID); All separately will not work. Please Help
	Glenn Graham Software Engineer Manning NavComp, Inc. Austin, Texas www.navcomp.com

glenngraham Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Skyline Customers Joined: January 17 2006 Location: United States Status: Offline Points: 5	Post Options Post Reply Quote glenngraham Report Post Thanks(0) Quote Reply Posted: January 23 2006 at 6:21pm
	Here is my error. I used ITerrainLabel pITerrain4 ; I should have used ITerrainLabelPtr pITerrain4 ; Here is my cleaned up (a little) code... int CTE3DWindow::SetId(long Id, double longVal, double latVal, ITerrainLabel2 *pITerrainLabel2) { ITerrainLabelPtr pITerrain4 = NULL; // Prevent TerraExplorer from displaying the error messages. pITerraExplorer4->DisplayErrorMessages = FALSE; HRESULT hr = S_OK; _bstr_t GroupName = "My Group"; long GroupID = pIInformationTree->CreateGroup(GroupName, 0); wchar_t wsz[] = L"There's the Count."; _bstr_t Id_ID; Id_ID = SysAllocString(wsz); pITerrain4 = pIObjectManager->CreateLabel(longVal, latVal, 100, GroupID, Id_ID); _bstr_t myText = "This is some text!"; pITerrain4->Text = myText; if (SUCCEEDED(hr)) return 1; else return 0; }
	Glenn Graham Software Engineer Manning NavComp, Inc. Austin, Texas www.navcomp.com

glenngraham Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Skyline Customers Joined: January 17 2006 Location: United States Status: Offline Points: 5	Post Options Post Reply Quote glenngraham Report Post Thanks(0) Quote Reply Posted: January 25 2006 at 5:49pm
	ITerrainLabel2Ptr tl = NULL; tl = objManager->CreateLabel(...); // the (...) is because I was too lazy to make up the params right now, sorry! // now, we have a valid instance of ITerrainLabel2 _bstr_t myText = "This is some text!"; tl->Text = myText; // That's it! - - - - - ----- Intially I got an error. I had set the following: IObjectManagerPtr pIObjectManager; So when I called hr = pIObjectManager->CreateLabel(longVal, latVal, 100, GroupID, myText, &pITerrain4); I get the error. 'raw_CreateLabel' : cannot convert parameter 6 from 'struct ITerrainLabel2 ' to 'struct ITerrainLabel So I change to: IObjectManager2Ptr pIObjectManager; I was following the C++ example in Ch 25 "Examples in C++->Adding Objects to the Project" for the help. All is working now.
	Glenn Graham Software Engineer Manning NavComp, Inc. Austin, Texas www.navcomp.com