For Tyro

Code:

#define IDT_TIMER1 1001
#include <Windows.h>
LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
BOOL CALLBACK FontProc(HWND hWnd, LPARAM lParam);
VOID CALLBACK TimerProc(HWND hWnd, UINT Msg, UINT_PTR idEvent, DWORD dwTime);
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
	WNDCLASSEX wc;
	MSG msg;
	HWND hwnd, hCursor;
	wc.cbClsExtra = 0;
	wc.cbSize = sizeof(WNDCLASSEX);
	wc.cbWndExtra = 0;
	wc.hbrBackground = (HBRUSH) COLOR_WINDOW;
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
	wc.hInstance = hInstance;
	wc.lpfnWndProc = WndProc;
	wc.lpszClassName = TEXT("CurPosWnd");
	wc.lpszMenuName = NULL;
	wc.style = 0;

	RegisterClassEx(&wc);

	hwnd = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW, TEXT("CurPosWnd"), TEXT("Cursor"), WS_VISIBLE | WS_SYSMENU, 10, 10, 100, 100, NULL, NULL, hInstance, NULL);
	hCursor = CreateWindowEx(0, TEXT("STATIC"), TEXT("0, 0"), WS_VISIBLE | WS_CHILD, 10, 25, 70, 20, hwnd, NULL, hInstance, NULL);

	ShowWindow(hwnd, SW_SHOW);
	EnumChildWindows(hwnd, FontProc, 0);
	SetTimer(hwnd, IDT_TIMER1, 50, TimerProc);
	UpdateWindow(hwnd);
	//PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE);
	while(GetMessage(&msg, NULL, 0, 0) > 0)
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return msg.wParam;

}

VOID CALLBACK TimerProc(HWND hWnd, UINT Msg, UINT_PTR idEvent, DWORD dwTime)
{
	HWND hCursor = FindWindowEx(hWnd, 0, TEXT("STATIC"), NULL);
	TCHAR cursorBuf[20];
	POINT p;
	GetCursorPos(&p);
	wsprintf(cursorBuf, TEXT("(%d, %d)"), p.x, p.y);
	SetWindowText(hCursor, cursorBuf);	
}

BOOL CALLBACK FontProc(HWND hWnd, LPARAM lParam)
{
	HFONT hfDefault = (HFONT) GetStockObject(DEFAULT_GUI_FONT);
	SendMessage(hWnd, WM_SETFONT, (WPARAM) hfDefault, MAKELPARAM(FALSE, 0));
	return TRUE;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	switch(Msg)
	{
	case WM_CLOSE:
		DestroyWindow(hWnd);
		break;
	case WM_DESTROY:
		KillTimer(hWnd, IDT_TIMER1);
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, Msg, wParam, lParam);
	}
	return 0;
}

Coordinate-finder source.