To translate an error code to its verbal description, use the function strerror(). strerror() is declared in as follows: char * strerror(int errcode); The function takes an error code and
Applications that handle signals must distinguish between atomic and non-atomic datatypes. Reading or writing an atomic object is guaranteed to take one instruction. By contrast, accessing a non-atomic object may
System calls and Standard Library functions assign a zero value to the global variable errno to indicate success. In case of an error, they assign negative values to errno. On
C and C++ differ in their interpretation of an empty parameter list. In the following function declaration: void f(); // different meanings in C and C++ C++ treats f as
You can define a template member function in an ordinary class as follows: class C{public: template int func(T* p);};template int C::func(T* p){ return 0;} Note that Visual C++ doesn
The native VB6 Split and Join functions have highlighted a number of useful techniques, and VB5 and VB4 programmers can use this extended facility as well. This code emulates the
Several new properties associated with files were not available when the original VB file I/O statements and functions were designed. To easily access these new properties
Loading a combo/listbox is pretty easy, and determining what the combo/listbox Text property selects is even easier. But if you load a table that contains duplicate values, you might run
If your VB ActiveX DLL includes a non-modal form, you can