Member Avatar for andrax

I'm writting a program where I need the coordinates of the mouse when it's clicked inside the client area. For some reason, the coordinates seem to be in base 21, maybe higher (I've seen the character k). I'm not sure why this is happening.

Here's the mouse section of the message loop

case WM_LBUTTONDOWN:
{
	int x = ((int)(short)LOWORD(lParam));
	int y = ((int)(short)HIWORD(lParam));

	char buf[20];
	string s = itoa(x, buf, 21);
	s += ", ";
	s += itoa(y, buf, 21);
	MessageBox(hwnd, s.c_str(), "Distance", MB_OK | MB_APPLMODAL);

	return 0;
}
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  • Latest Post Latest Post by WolfPack
Member Avatar for WolfPack 
std::string s(itoa(x, buf, 10));
		s += ", ";
		s += itoa(y, buf, 10);;

Read the specification for atoi .

What is the meaning of this cast?

int x = ((int)(short)LOWORD(lParam));

Just using

WORD x = LOWORD( lParam ) ;

will work.

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