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ABeck.1
ABeck.1
Associate III
April 1, 2020
Solved

Can we declare structure in model.hpp and how to use it in model.cpp ? any syntax , example or something

  • April 1, 2020
  • 16 replies
  • 4113 views

..

This topic has been closed for replies.
Best answer by Martin KJELDSEN

Just to do something simple:

//Model.hpp
#ifndef MODEL_HPP
#define MODEL_HPP
 
class ModelListener;
 
struct MyStruct
{
 int a;
 int b;
};
 
class Model
{
public:
 Model();
 void bind(ModelListener* listener)
 {
 modelListener = listener;
 }
 void tick();
protected:
 ModelListener* modelListener;
 MyStruct s;
};
#endif // MODEL_HPP

//Model.cpp
#include <gui/model/Model.hpp>
#include <gui/model/ModelListener.hpp>
 
Model::Model() : modelListener(0)
{
 s.a = 1;
 s.b = 2;
}
 
void Model::tick()
{
 modelListener->setStructValue1(s);
}

16 replies

Martin KJELDSEN
Martin KJELDSEN
Principal III
April 1, 2020

I have no idea what you're asking :) Can you be more specific? Are you asking a general C++ question here?

/Martin

ABeck.1
ABeck.1Author
Associate III
April 1, 2020

ya its general C++ question, which I am using in TouchGFX. I want to create structure in model.hpp file

 typedef struct

             {

                int16_t Test_hour;

                int16_t Test_minute;

             } LANG;

I want to use this structure in model.cpp,

How to do that?

if I write LANG.Test_hour in model.cpp file, its is throughing error, it is not recognizing LANG structure.

Now am I bet clear?

Martin KJELDSEN
Martin KJELDSEN
Principal III
April 1, 2020

Can you post your code?

Martin KJELDSEN
Martin KJELDSENBest answer
Principal III
April 1, 2020

Just to do something simple:

//Model.hpp
#ifndef MODEL_HPP
#define MODEL_HPP
 
class ModelListener;
 
struct MyStruct
{
 int a;
 int b;
};
 
class Model
{
public:
 Model();
 void bind(ModelListener* listener)
 {
 modelListener = listener;
 }
 void tick();
protected:
 ModelListener* modelListener;
 MyStruct s;
};
#endif // MODEL_HPP

//Model.cpp
#include <gui/model/Model.hpp>
#include <gui/model/ModelListener.hpp>
 
Model::Model() : modelListener(0)
{
 s.a = 1;
 s.b = 2;
}
 
void Model::tick()
{
 modelListener->setStructValue1(s);
}

ABeck.1
ABeck.1Author
Associate III
April 8, 2020
  1. {
  2. s.a = 1;
  3. s.b = 2;
  4. }

Like this are you defining its initial values?

as we define for any variable like this Model::Model() : modelListener(0), hour(0)

?

I want to save structure value in model so that can we used in different screens

ABeck.1
ABeck.1Author
Associate III
April 8, 2020

class ModelListener

{

public:

  ModelListener() : model(0) { }

  virtual ~ModelListener() {}

virtual void setStructValue1( struct s){}  // HERE IN LISTENER FUNCTION CAN I PASS STRUCT ?

protected:

  Model* model;

};

Martin KJELDSEN
Martin KJELDSEN
Principal III
April 8, 2020

Sure you can!

ABeck.1
ABeck.1Author
Associate III
April 8, 2020

../TouchGFX/gui/include/gui/model/ModelListener.hpp: In member function 'virtual void ModelListener::setStructValue1(s)':

../TouchGFX/gui/include/gui/model/ModelListener.hpp:50:46: error: '<anonymous>' has incomplete type

     virtual void setStructValue1( struct s){} //ABC

This error I am getting

I think its not identifying struct s,

How to send struct as parameter? in modelListener and view

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