Question

To convert an ostringstream to an LPCSTR in a C++ Win32 API

Answer 1

#include <Windows.h> 
#include <sstream>

int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    
    std::ostringstream oss;
        
    oss << "C++";
    oss << " ";
    oss << 26;

    std::string s = oss.str();

    MessageBoxA(0, s.c_str(), "info", MB_OK);
}



/*
run:

C++ 26

*/

 

70+ SQL courses for beginners and professionals

Answer 2

#include <Windows.h> 
#include <sstream>

int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    
    std::ostringstream oss;
        
    oss << "C++";
    oss << " ";
    oss << 26;

    std::string s = oss.str();

    LPCSTR lpcstr = s.c_str();

    MessageBoxA(0, lpcstr, "info", MB_OK);
 }



/*
run:

C++ 26

*/

 

70+ SQL courses for beginners and professionals