   MessageBox
  1)If I have a variable and it's of type Dword and I want to print it out in a messagebox like DWORD myone;I can't doMessageBox(NULL, myone, "name", MB_OK); because it requires a type  LPCTSTR, so how do i convert it to  LPCTSTR?   
  Try something like so:char buffer[MAX_PATH] = "";DWORD myone;sprintf(buffer, "%d", myone);MessageBox(NULL, buffer, "title", MB_OK);Basically what sprintf does is it writes variables (like integers, doubles, floats, characters, etc.) into a string buffer, which can then be passed into the MessageBox function. %d in the sprintf function stands for an integer value, while %f would be float, %s is a string, and then there are a few others I forget. Lookup sprintf in the MSDN library; should find all the info you need there.There's also the itoa() function, but with sprintf you can format the output to be something more appealing.   ;  IF you're using C++, you can use strings and this simple useful template function I've found somewhere(can't remember where):template <class T> string ToString(T val){std::stringstream ss;ss<<val;return ss.str();}Now you can just do:MessageBox(NULL,ToString(myone).c_str(),"name",MB_OK);Of course, you can use the ToString function with any type that can be converted into a string.   ;  A more robust method than mikeman's would be to use Boost's lexical_cast function, which will also let you convert strings back into primitives. A link to Boost can be found in my signature.   