Linker Errors when using winservice

Some times we will get linker errors like below when creating winservice.
To solve this add following code.




#pragma comment (lib, "advapi32.lib")
#pragma comment (lib, "user32.lib")

Or

include user32.lib and advapi32.lib in linker input of project settings



error LNK2019: unresolved external symbol __imp__CloseServiceHandle@4 referenced in function
error LNK2019: unresolved external symbol __imp__CreateServiceA@52 referenced in function
error LNK2019: unresolved external symbol __imp__OpenSCManagerA@12 referenced in function
error LNK2019: unresolved external symbol __imp__DeleteService@4 referenced in function
error LNK2019: unresolved external symbol __imp__OpenServiceA@12 referenced in function
error LNK2019: unresolved external symbol __imp__ControlService@12 referenced in function
error LNK2019: unresolved external symbol __imp__StartServiceA@12 referenced in function
error LNK2019: unresolved external symbol __imp__StartServiceCtrlDispatcherA@4 referenced in function
error LNK2019: unresolved external symbol __imp__SetServiceStatus@8 referenced in function
error LNK2019: unresolved external symbol __imp__RegisterServiceCtrlHandlerA@8 referenced in function
error LNK2019: unresolved external symbol __imp__PostThreadMessageA@16 referenced in function

Remove Duplicates From Vector Template Example




#include <vector>
#include <algorithm>
using namespace std;
// Add this header files

/*
Template function to Remove Duplicates
From a vector */

template <class T>
void RemoveDuplicates(vector<T> &vecContents)
{
    vector<T> ::iterator vItr;
  
    sort(vecContents.begin(),vecContents.end());
    vItr=unique(vecContents.begin(),vecContents.end());   
    if(vItr!=vecContents.end())
         vecContents.erase(vItr,vecContents.end());
}




//Usage Example 1

vector<CString> vNames; 
vNames.push_back("John");
vNames.push_back("Victor");
vNames.push_back("Nancy"); 
vNames.push_back("William");
vNames.push_back("Nancy");

RemoveDuplicates(vNames); 


//Usage Example 2
vector<int> vNos;   
vNos.push_back(1);
vNos.push_back(1);
vNos.push_back(4);

RemoveDuplicates(vNos);