Re: [Dev-C++] doubts about creating static libs and using them

[<sol...@ya...>]

You don't have to type class when declaring an object.
You must include the header file in the program you're building.
See below and at the end.

Dark Kernel (InacioW-) wrote:

 > Hi.
 > I´ve created the lib called libTest, wich contains
 >the following:
 >
 >#include <iostream.h>
 >
 >class Test
 >{
 >public:
 > Test();
 >};
 >
 >Test::Test()
 >{
 >  cout << " this is a test";
 >}
 >
 >the file was well-compiled and generated a file called
 >libTest.a, wich I can add to the linker and use in
 >other program, but I have no Idea about how make a
 >reference of the methods.
 >
 >I tried
 >
 >
 >#include <iostream>
 >#include <stdlib.h>
 >
 >using namespace std;
 >
 >
 >
 >class Test; <----- This line has not to be there. And you shall 
#include the header where that class is defined
 >class Teste * test1; <-----First you say Teste, when you haven''t any 
class named Teste, you have the class named Test.
 >extern Teste::Teste();
 >
 >int main(int argc, char *argv[])
 >{
 >  teste1 = new Teste();  // <- the compiler points  me
 >an error here ... :(
 >
 >  system("PAUSE");	
 >  return 0;
 >}
 >
 >so, what´s goind wrong?
 >someone can help me?
 >
 >thanks anyway,
 >
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You should do:
File 1: header of test library, test.h
#ifndef TEST_H
#define TEST_H

class Test{
Test();
};

#endif

File 2: source file of test: library, test.cpp

#include <iostream>
#include <test.h>

Test::Test(){
std::cout << "This is a test" << endl;
}

Then you select both files into a static library project and compile it.
You build the library libtest.a.

After that you write your test program, test_program.cpp:

#include <test.h>
#include <stdlib.h>

int main(){
Test *test_object = new Test();

system("PAUSE");
return 0;
}
Then you compile it with the option -ltest for linker.