C / C++ / MFC

//libApi.h
#include <map>
#include <string>

class MyApiClass{
  public:
  //some methods...
  private:
  // var map
  std::map<std::string, Param> vars;
};

<pre lang="c++">
// hide the window before enabling the parent, etc.
if (m_hWnd != NULL)
SetWindowPos(NULL, 0, 0, 0, 0, SWP_HIDEWINDOW|
SWP_NOSIZE|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER);

UpdateData();

    MYSQL *ssock;
    ssock = (MYSQL *)malloc(sizeof(MYSQL));
    mysql_init(ssock);

    conn = mysql_init(NULL);

    if (conn == NULL) {
        printf("Error %u: %s\n", mysql_errno(conn), mysql_error(conn));
        exit(1);
    }

    if (mysql_real_connect(conn, "127.0.0.1", "root", "Root", "inomatic", 0, NULL, 0) == NULL)
    {
        printf("Error %u: %s\n", mysql_errno(conn), mysql_error(conn));
        exit(1);
    }

    int tmp = atoi((LPSTR)(LPCTSTR)m_Contact);

    if(m_Password != m_CfmPassword)
        {
        MessageBox("Both Password do not match! Please enter again.");
        m_EditPassword.SetFocus();
        }
    if(m_Username == "" || m_Password=="" || m_CfmPassword =="" || m_Email =="" || m_Contact =="" || m_Company == "")
        {
        MessageBox("Please fill in all the blanks.");
        }
    else if (m_Password == m_CfmPassword)
        {
                Insert(conn,(LPSTR)(LPCTSTR)m_Username,(LPSTR)(LPCTSTR)m_Password,(LPSTR)(LPCTSTR)m_Email,tmp,(LPSTR)(LPCTSTR)m_Company,"User");
                MessageBox("Thank You! You have successfully registed into People Counter Application.");
        }
    UpdateData(FALSE);
    mysql_close(conn);
    //Clear text after register ======================================================================================================================================
    m_EditUsername.SetSel(0,-1),m_EditPassword.SetSel(0,-1),m_EditCfmPassword.SetSel(0,-1),m_EditEmail.SetSel(0,-1),m_EditContact.SetSel(0,-1),m_EditCompany.SetSel(0,-1);
    m_EditUsername.Clear();
    m_EditPassword.Clear();
    m_EditCfmPassword.Clear();
    m_EditEmail.Clear();
    m_EditContact.Clear();
    m_EditCompany.Clear();

for (index = 0; index < num_systems && systems[index].type == SYSTEM_TYPE_XYZ && (systems[index].name, "XYZname"); ++index);

CView* pView = (CView*)GetActiveView();

#include <windows.h>
#include <stdio.h>

using namespace std;

// tls callback declaration
void WINAPI TLSCallback(PVOID DllHandle, DWORD dwReason, PVOID Reserved)
{
	MessageBox(0, L"TLS Callback before main.", L"TLS CallBack", 0);
	
}
// end declaration

//linker specs
#ifdef _M_IX86
#pragma comment (linker, "/INCLUDE:__tls_used")
#pragma comment (linker, "/INCLUDE:__xl_b")
#else
#pragma comment (linker, "/INCLUDE:_tls_used")
#pragma comment (linker, "/INCLUDE:_xl_b")
#endif
#ifdef _WIN64
#pragma const_seg (".CRT$XLB")
const
#else
#pragma data_seg (".CRT$XLB")
#endif
//end linker


//tls import
EXTERN_C
{
PIMAGE_TLS_CALLBACK _xl_b = TLSCallback;
#pragma data_seg ()
#pragma const_seg ()
}
//end 

int main(int argc, char* argv[])
{
	printf("Hello World from main()!");
	getchar();
	return 0;
}