visual studio 2015 - VS2015 C++ CLR Project GetForegroundWindow() Not Starting up -

i trying code program see current application open , base on application something. create empty clr project using vs 2015 c++. there @ moment have textbox , button start. have below code in myform.h file below code vs generates form, textbox , button:

private: void getapps() {         hwnd hcurrentwindow = null;         char title[256];         string stitle;         while (true) {             if (hcurrentwindow != getforegroundwindow()) {                 hcurrentwindow = getforegroundwindow();                 getwindowtexta(hcurrentwindow, title, sizeof(title));                 stitle = title;                 if (stitle.find("notepad++") != string::npos) { //npos returned find if substring wasn't found                     txtbox->text += "\r\n" + "notepad++";                 }                 if (stitle.find("skype") != string::npos) {                     txtbox->text += "\r\n" + "skype";                 }                 else {                     txtbox->text += "\r\n" + "non classified application.";                 }             }         }     } 

the code works in console application changing txtbox cout.

when run application compile , run when gets if (hcurrentwindow != getforegroundwindow()) { nothing. when debug it telling me wuser32.pdb not loaded suggesting load microsoft symbol servers, did did not help.

any clues why work in console not in forms? , possible fix?