C / C++ / MFC

4-Jun-08 21:16

Hi!
I'm Working in a VC++ Simulation project. I've got an error which says,

c:\program files\delta3d_rel-2.0.0\inc\dtcore\globals.h(29) : error C2143: syntax error : missing ';' before 'namespace'

globals.h is a Delta3D Simulation Engine's file. I did not touch it at all. What might be the problem? What is the resolution?

toxcct4-Jun-08 21:17

4-Jun-08 21:17

the problem might be because you have a syntax error (a missing ; or a brackets { } misplaced) before #including globals.h

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T.RATHA KRISHNAN4-Jun-08 21:23

4-Jun-08 21:23

I didn't miss any ';' at all. Infact it's system(Simulation Engine's) file. What to do? Here is the complete code for globals.h.

#ifndef DELTA_GLOBALS
#define DELTA_GLOBALS


#include <string>

#include <dtCore/export.h>

namespace dtCore
{
   /// Set the list of data file paths
   DT_CORE_EXPORT void SetDataFilePathList( const std::string& pathList );

   /// Get the list of data file paths
   DT_CORE_EXPORT std::string GetDataFilePathList();

   /// Get the Delta Data path list (equivalent to the DELTA_DATA environment)
   DT_CORE_EXPORT std::string GetDeltaDataPathList();

   /// Get the root path to Delta3D (equivalent to the DELTA_ROOT environment)
   DT_CORE_EXPORT std::string GetDeltaRootPath();

   /// Convienence method to get the supplied environment variable
   DT_CORE_EXPORT std::string GetEnvironment(const std::string& env );

      DT_CORE_EXPORT void SetEnvironment(const std::string& name, const std::string& value);

     DT_CORE_EXPORT std::string FindFileInPathList(const std::string &fileName);


}


#endif  //DELTA_GLOBALS

toxcct4-Jun-08 21:26

4-Jun-08 21:26

so you didn't read my post !!!

i said the error is NOT in the globals.h file itself but around it.

when you #include a header, it's as if its content was copied/pasted at the location of the #include directive. so if you have an arror in a file #included before that one, on in the including file itself, you might see such errors in files you actually didn't modified.

also, if it's a system file, be sure to #include <> rather than #include ""

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T.RATHA KRISHNAN4-Jun-08 21:34

4-Jun-08 21:34

Here is my complete listings where the 'globals.h' is included.

#include "HelloWorld.h"
#include <dtCore/globals.h>
#include <dtCore/object.h>
#include <dtCore/orbitmotionmodel.h>
#include <dtCore/scene.h>
#include <osgDB/FileUtils>
#include <dtCore/dt.h>
#include <dtABC/application.h>

If include HelloWorld.h like u said (<helloworld.h>) it shows me error which says Cannot open include file. No such file or Directory. What to do?

CPallini4-Jun-08 21:38

4-Jun-08 21:38

I can't believe HelloWorld.h being a system header.
BTW usually non-system headers includes (like #include "HelloWorld.h") follows the system ones. Your snippet shows the opposite.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

T.RATHA KRISHNAN4-Jun-08 21:40

4-Jun-08 21:40

Not HelloWorld.h. It's globals.h.

CPallini4-Jun-08 21:49

4-Jun-08 21:49

I was suggesting (the same toxcct did) to put #include "HelloWorld.h" at the end of your include list.

Often problems originate in slightly different places with respect the one the misbehaviour shows up.
Smile | :)

toxcct4-Jun-08 21:39

4-Jun-08 21:39

what happens if you #include "HelloWorld.h" after every other system includes ?

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T.RATHA KRISHNAN4-Jun-08 22:35

4-Jun-08 22:35

It gives me errors if I include after all the system files.

d:\myprojects\myprojects\myprojects\helloworld.cpp(13) : error C2533: 'HelloWorld::{ctor}' : constructors not allowed a return type
d:\myprojects\myprojects\myprojects\helloworld.cpp(65) : error C2264: 'HelloWorld::HelloWorld' : error in function definition or declaration; function not called

CPallini4-Jun-08 22:48

4-Jun-08 22:48

Please post the code.
Smile | :)

T.RATHA KRISHNAN4-Jun-08 22:56

4-Jun-08 22:56

Here is the code.

#include "HelloWorld.h"
#include <dtCore/globals.h>
#include <dtCore/object.h>
#include <dtCore/orbitmotionmodel.h>
#include <dtCore/scene.h>
#include <osgDB/FileUtils>
#include <dtCore/dt.h>
#include <dtABC/application.h>
#include <dtCore/deltawin.h>

HelloWorld::HelloWorld(const std::string& configFilename):dtABC::Application(configFilename),mText(0),mOrbitMotionModel(0)
{
   // Generating a default config file if the one passed in is not there.
	
	if(osgDB::findDataFile(configFilename).empty())
   {
      GenerateDefaultConfigFile();
   }
}
HelloWorld::~HelloWorld()
{
}

void HelloWorld::Config()
{
 // Allocate a dtCore::Object. This class will be your basic container
// for 3D meshes.
 mText = new dtCore::Object("Text");
// Load the model file, in this case a OpenFligth model (.flt)
 mText->LoadFile("HelloWorld.flt");
// Add the Object to the scene. Since mText is a RefPtr, we must
// pull the internal point out to pass it to the Scene.
 GetScene()->AddDrawable( mText.get() );
 // Adjust the Camera position by instantiating a transform object to
// store the camera position and attitude.
dtCore:: Transform camPos;
camPos.SetLookAt( 0.0f, -100.0f, 20.0f, // Position
                  0.0f, 0.0f, 0.0f,     // Look At
                  0.0f, 0.0f, 1.0f);    // Up Vector
GetCamera()->SetTransform(camPos);
// Setting a motion model for the camera

mOrbitMotionModel = new dtCore::OrbitMotionModel(GetKeyboard(),GetMouse());

// Setting the camera as a target for the motion model. The object (the hello
// world 3D text) will be static at 0,0,0 and the camera will move using 
// the right clicked mouse.
mOrbitMotionModel->SetTarget(GetCamera());
}

int main()
{
   // Setup the data file search paths for the config file and the models files.
   // This is best done in main prior to configuring app. That way the paths
   // are ensured to be correct when loading data.
   dtCore::SetDataFilePathList( ".;" + dtCore::GetDeltaDataPathList());

   // Instantiate the application and look for the config file
   // You do not have to call delete on this.
   dtCore::RefPtr<HelloWorld> app = new HelloWorld( "config.xml" );
   // Configure the application
   app->Config();
   // Run the simulation loop
   app->Run();

	return 0;
}

CPallini4-Jun-08 23:16

4-Jun-08 23:16

And the HelloWorld.h code?

T.RATHA KRISHNAN4-Jun-08 23:44

4-Jun-08 23:44

#include <dtABC/application.h>
#include <dtCore/refptr.h>

// Forward declarations to keep compile-time down
namespace dtCore
{
   class Object;
   class OrbitMotionModel;
}

class HelloWorld: public dtABC::Application
{
 public:
	 HelloWorld(const std::string &configFilename);

 protected:
	 // Destructors for subclasses of dtCore::Base must have a protected
     // destructor. Otherwise use of RefPtrs will cause some serious
     // problems if the objects are allocated on the stack.

	 virtual ~HelloWorld();

 public:
	 // Override this function to setup your scene.

	 virtual void Config();

 private:
	 // dtCore::RefPtr is a template for a smart pointer that takes
    // care of reference counting for objects allocated on the heap.
    // It is good practice to store all objects that derive from
    // dtCore::Base inside a RefPtr.
 
	 dtCore::RefPtr<dtCore::Object> mText;
     dtCore::RefPtr<dtCore::OrbitMotionModel> mOrbitMotionModel;
}

CPallini5-Jun-08 0:04

5-Jun-08 0:04

Well, I cannot spot the error. The code seems OK.
Anyway, I insist, the right place for #include "HelloWorld.h" is at the bottom of the list.
Smile | :)

super_ttd14-Jun-08 23:26

super_ttd

14-Jun-08 23:26

you're missing a ; after the closing } of the class definition.

a class definition is like this :

class C {
    //...
}<code>;</code>

Cedric Moonen4-Jun-08 22:50

Cedric Moonen

4-Jun-08 22:50

Then it probably means you have errors in that file. Post some code (and please, use the code block tags).

Cédric Moonen
Software developer

Charting control [v1.4]

T.RATHA KRISHNAN4-Jun-08 22:55

4-Jun-08 22:55

Here is the complete listing.

#include "HelloWorld.h"
#include <dtCore/globals.h>
#include <dtCore/object.h>
#include <dtCore/orbitmotionmodel.h>
#include <dtCore/scene.h>
#include <osgDB/FileUtils>
#include <dtCore/dt.h>
#include <dtABC/application.h>
#include <dtCore/deltawin.h>

HelloWorld::HelloWorld(const std::string& configFilename):dtABC::Application(configFilename),mText(0),mOrbitMotionModel(0)
{
   // Generating a default config file if the one passed in is not there.
	
	if(osgDB::findDataFile(configFilename).empty())
   {
      GenerateDefaultConfigFile();
   }
}
HelloWorld::~HelloWorld()
{
}

void HelloWorld::Config()
{
 // Allocate a dtCore::Object. This class will be your basic container
// for 3D meshes.
 mText = new dtCore::Object("Text");
// Load the model file, in this case a OpenFligth model (.flt)
 mText->LoadFile("HelloWorld.flt");
// Add the Object to the scene. Since mText is a RefPtr, we must
// pull the internal point out to pass it to the Scene.
 GetScene()->AddDrawable( mText.get() );
 // Adjust the Camera position by instantiating a transform object to
// store the camera position and attitude.
dtCore:: Transform camPos;
camPos.SetLookAt( 0.0f, -100.0f, 20.0f, // Position
                  0.0f, 0.0f, 0.0f,     // Look At
                  0.0f, 0.0f, 1.0f);    // Up Vector
GetCamera()->SetTransform(camPos);
// Setting a motion model for the camera

mOrbitMotionModel = new dtCore::OrbitMotionModel(GetKeyboard(),GetMouse());

// Setting the camera as a target for the motion model. The object (the hello
// world 3D text) will be static at 0,0,0 and the camera will move using 
// the right clicked mouse.
mOrbitMotionModel->SetTarget(GetCamera());
}

int main()
{
   // Setup the data file search paths for the config file and the models files.
   // This is best done in main prior to configuring app. That way the paths
   // are ensured to be correct when loading data.
   dtCore::SetDataFilePathList( ".;" + dtCore::GetDeltaDataPathList());

   // Instantiate the application and look for the config file
   // You do not have to call delete on this.
   dtCore::RefPtr<HelloWorld> app = new HelloWorld( "config.xml" );
   // Configure the application
   app->Config();
   // Run the simulation loop
   app->Run();

	return 0;
}

constructor failed??? [modified]

David Crow5-Jun-08 2:54

David Crow

5-Jun-08 2:54

Where is line 29 at? That's the one that eventually caused the compiler to complain?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

dealon4-Jun-08 21:05

dealon

4-Jun-08 21:05

Hello all.
I have this code with something error occured:
//------------------------------------------

#include "iostream"
using namespace std;

class aa
{
public:
aa()
{
aa(5);
}

aa(int t)
{
x = t;
}
void print()
{
cout << x << endl;
}
private:
int x;
};

int main()
{
aa t;
t.print();//this can't output "5", why?
return 0;
}
///---------------------------
As is descriped above, thanks in advance!

If we dream, every thing is possible!

modified on Thursday, June 5, 2008 3:31 AM

Re: constructor failed???

Cedric Moonen4-Jun-08 21:12

Cedric Moonen

4-Jun-08 21:12

Could you please elaborate the problem ? What's wrong ?
And please use the "code block" option when posting code (all of that is clearly explained in the posting guidelines).

Cédric Moonen
Software developer

Charting control [v1.4]

Re: constructor failed???

CPallini4-Jun-08 21:19

Re: constructor failed???

4-Jun-08 21:19

(excluding << and >> operators usage!) He creates a temporary object (calling aa(5)) inside the default constructor, probably he wanted to initialize x with 5 instead.
Smile | :)

toxcct4-Jun-08 21:13