#include <windows.h>
#include "winlib.h"

extern HINSTANCE hInst;


BOOL CALLBACK InputDlgProc(HWND hDlg, UINT msg,
		WPARAM wParam, LPARAM lParam)
{
	static INPUT_DATA id, *pid;
	RECT rect;
	int capHeight, scrWidth, scrHeight, totHeight, edge;
	
	switch (msg) {
		case WM_INITDIALOG:
			pid = (INPUT_DATA*)lParam;
			id = *pid;

			capHeight = GetSystemMetrics(SM_CYCAPTION);
			scrWidth = GetSystemMetrics(SM_CXSCREEN);
			scrHeight = GetSystemMetrics(SM_CYSCREEN);
			edge = GetSystemMetrics(SM_CYEDGE);

			totHeight = 130 + capHeight + (2 * edge) + 2;

			MoveWindow(hDlg,
			(scrWidth / 2) - (id.width / 2),
			(scrHeight / 2) - (totHeight / 2),
			id.width, totHeight,
			FALSE);

			GetClientRect(hDlg, &rect);

			MoveWindow(GetDlgItem(hDlg, IDC_INPUT),
			20, 30, rect.right - 40, 23,
			FALSE);

			MoveWindow(GetDlgItem(hDlg, IDOK),
			(rect.right / 2) - 90, 90, 80, 28,
			FALSE);

			MoveWindow(GetDlgItem(hDlg, IDCANCEL),
			(rect.right / 2) + 10, 90, 80, 28,
			FALSE);

			SetWindowText(hDlg, id.title);
			SetDlgItemText(hDlg, IDC_INPUT, id.data);

			SetFocus(GetDlgItem(hDlg, IDC_INPUT));
			return FALSE;
          
		case WM_COMMAND :
			switch (LOWORD (wParam)) {
				case IDOK:
					GetDlgItemText(hDlg, IDC_INPUT, id.data, 511);
					*pid = id;
					EndDialog(hDlg, 1);
					return TRUE;

				case IDCANCEL:
					EndDialog (hDlg, 0);
					return TRUE ;
			}
			break;
	}
	return FALSE;
}


char* GetInput(HWND hParent, char *title, char *dflt, int width)
{
	static char input[512];
	INPUT_DATA id;
	
	strcpy(input, "");
	strcpy(id.title, title);
	strcpy(id.data, dflt);
	id.width = width;
	
	if (DialogBoxParam(hInst, "InputBox", hParent,
			InputDlgProc, (LPARAM)&id)) {
		strcpy(input, id.data);
		return input;
	} else
		return NULL;
}

.