C / C++ / MFC

Rick York wrote:

I thought there must be an instance of an object to use a pointer to one.

Rick York wrote:

Even with a static member that is not the best syntax to use though.

Cedric Moonen wrote:

This, on the other hand is perfectly acceptable.

class Z
{
public:
	int g;
	void out(){printf("addr %p\n", this);}
	void outg(){printf("addr %p g=%d\n", this, g);}
};
	
Z *pz1, *pz2=0, *pz3=(Z*)0xdeadbabe, *pz4, z;

void main()
{
	pz1->out();// line 1
	pz2->out();// line 2
	pz3->out();// line 3
	pz4->out();// line 4
	z.g=100;// line 5
	pz1=&z;// line 6
	pz1->outg();// line 7
	pz2->outg();// line 8
	pz3->outg();// line 9
	pz4->outg();// line 10
}

mov ecx, dword ptr [eax]

ccpptrain wrote:

->Whether this method of using uninitialized pointer is acceptable in any condition?

ccpptrain wrote:

->Will this work on different platforms?

ccpptrain wrote:

->Any pitfalls?

ccpptrain wrote:

->Your Valuable suggestions.

HWND hwnd = ::CreateWindowEx(WS_EX_LAYERED|WS_EX_TRANSPARENT|WS_EX_NOACTIVATE,
                        AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW|CS_SAVEBITS),
                        NULL,
                        WS_POPUP|WS_DLGFRAME,
                        0, 0, 100, 100,
                        NULL,
                        NULL,
                        GetModuleHandle(NULL),
                        NULL);

::SetLayeredWindowAttributes(hwnd, RGB(10, 20, 30), 255, LWA_COLORKEY);
::SetWindowPos(hwnd, CWnd::wndTopMost, 100, 100, 200, 50, SWP_SHOWWINDOW | SWP_NOACTIVATE);