Varible definition

(变量定义)

parameter definition should be in .h file. If this variable is used in this window/form (qqWidget.h), just declare in “private:”. But if used in anther window/form, should declare in “public:”.

// globalvar.h

#ifndef MYGLOBALS

#define MYGLOBALS

extern int variable1;

extern int variable2;

#endif

...

// globalvar.cpp implementation

int variable1= 0;

int variable = 0;