visual studio - C++ link errors on solution with many projects -


i created c++ solution full of win32 console application projects in following form:

solution

each projects contains .cpp , .h files , in forms there main.cpp includes include lines .h files.

when trying bulid single project lnk2019 - unresolved external symbol seems appear each project when try compile main.

i read many questions , tried deal additional dependencies or build order nothing seems make difference.

i'm attaching errors here single project (button) - guess once figure issue 1 project rest same.

error   1   error lnk2019: unresolved external symbol "public: void __thiscall graphics::clearscreen(void)" (?clearscreen@graphics@@qaexxz) referenced in function "public: virtual void __thiscall button::keydown(int,char)" (?keydown@button@@uaexhd@z)  d:\forms\button\button.obj  button error   2   error lnk2019: unresolved external symbol "public: void __thiscall graphics::setbackground(enum color)" (?setbackground@graphics@@qaexw4color@@@z) referenced in function "public: virtual void __thiscall button::draw(class graphics,int,int,unsigned int)" (?draw@button@@uaexvgraphics@@hhi@z)  d:\forms\button\button.obj  button error   3   error lnk2019: unresolved external symbol "public: void __thiscall graphics::setforeground(enum color)" (?setforeground@graphics@@qaexw4color@@@z) referenced in function "public: virtual void __thiscall button::draw(class graphics,int,int,unsigned int)" (?draw@button@@uaexvgraphics@@hhi@z)  d:\forms\button\button.obj  button error   4   error lnk2019: unresolved external symbol "public: void __thiscall graphics::write(int,int,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?write@graphics@@qaexhhv?$basic_string@du?$char_traits@d@std@@v?$allocator@d@2@@std@@@z) referenced in function "public: virtual void __thiscall button::draw(class graphics,int,int,unsigned int)" (?draw@button@@uaexvgraphics@@hhi@z)  d:\forms\button\button.obj  button error   5   error lnk2019: unresolved external symbol "public: __thiscall control::control(void)" (??0control@@qae@xz) referenced in function "public: __thiscall button::button(int)" (??0button@@qae@h@z) d:\forms\button\button.obj  button error   6   error lnk2019: unresolved external symbol "public: __thiscall control::~control(void)" (??1control@@qae@xz) referenced in function __unwindfunclet$??0button@@qae@h@z$0 d:\forms\button\button.obj  button error   7   error lnk2001: unresolved external symbol "public: virtual void __thiscall control::getallcontrols(class std::vector<class control *,class std::allocator<class control *> > *)" (?getallcontrols@control@@uaexpav?$vector@pavcontrol@@v?$allocator@pavcontrol@@@std@@@std@@@z) d:\forms\button\button.obj  button error   8   error lnk2001: unresolved external symbol "public: virtual void __thiscall control::setwidth(int)" (?setwidth@control@@uaexh@z) d:\forms\button\button.obj  button error   9   error lnk2001: unresolved external symbol "public: virtual void __thiscall control::setvalue(int)" (?setvalue@control@@uaexh@z) d:\forms\button\button.obj  button error   10  error lnk2001: unresolved external symbol "public: virtual void __thiscall control::setforeground(enum color)" (?setforeground@control@@uaexw4color@@@z)    d:\forms\button\button.obj  button error   11  error lnk2001: unresolved external symbol "public: virtual void __thiscall control::setbackground(enum color)" (?setbackground@control@@uaexw4color@@@z)    d:\forms\button\button.obj  button error   12  error lnk2019: unresolved external symbol "public: void __thiscall control::drawbackground(void)" (?drawbackground@control@@qaexxz) referenced in function "public: virtual void __thiscall button::draw(class graphics,int,int,unsigned int)" (?draw@button@@uaexvgraphics@@hhi@z) d:\forms\button\button.obj  button error   13  error lnk2019: unresolved external symbol _main referenced in function ___tmaincrtstartup   d:\forms\button\msvcrtd.lib(crtexe.obj) button error   14  error lnk1120: 13 unresolved externals  d:\forms\debug\button.exe   button

the .h files paths correct , can see options in intellisense.

i appriciate idea might me resolve issue. thanks

so if understood correctly have 1 project main?

if that's right try build other projects static libraries (.lib)(or shared libraies (.dll)) , reference them main project (forms) should working.

right trying build executable (.exe) 12other .exe. can't work.


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