Dialog Box Problems

  
// Our Includes


#include <windows.h>
#include <windowsx.h>
#include <fstream.h>
#include <iostream.h>
#include "resource.h"

// Our Defines


#define WIN32_LEAN_AND_MEAN

// Our Globals


char strFileName[260];  // Our Location of the ROM Image we are opening

bool EmulationRunning = true; // Is the Emulator Translating?

HINSTANCE WindowInstance; // Global Instance


// Our About Box Dialog Procedure


BOOL CALLBACK AboutDlgProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	switch(Msg)
	{
	case WM_COMMAND:
		{
			switch(wParam)
			{
			case IDOK:
				{
					EndDialog(hWnd, IDOK);
					return TRUE;
				}
				break;
			}
		}
		break;
	}
	return FALSE;
}
// Our MsgHandler() Function


LRESULT CALLBACK MsgHandler(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	switch(Msg)
	{
	case WM_CLOSE:
		{
			PostQuitMessage(0);
			EmulationRunning = false;
			return 0;
		}
		break;
	case WM_QUIT:
		{
			PostQuitMessage(0);
			EmulationRunning = false;
			return 0;
		}
		break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			EmulationRunning = false;
			return 0;
		}
		break;
	case WM_COMMAND:
		{
			switch(wParam)
			{
			case ID_FILE_EXIT:
				{
					PostQuitMessage(0);
					EmulationRunning = false;
					return 0;
				}
				break;
			case ID_FILE_OPENROMIMAGE:
				{
					OPENFILENAME ofn;
					ZeroMemory(&ofn, sizeof(ofn));
					ofn.lpstrFilter = "NES Roms (*.NES)\0*.NES\0All Files (*.*)\0*.*\0";
					ofn.nFilterIndex = 1;
					ofn.lStructSize = sizeof(OPENFILENAME);
					ofn.hwndOwner = hWnd;
					ofn.lpstrFileTitle = NULL;
					ofn.nMaxFileTitle = 0;
					ofn.lpstrInitialDir = NULL;
					ofn.lpstrFile = NULL;
					GetOpenFileName(&ofn);

				}
				break;
			case ID_HELP_ABOUT:
				{
					DialogBox(WindowInstance, MAKEINTRESOURCE(ABOUT_DIALOG), hWnd, 
						      (DLGPROC)AboutDlgProc);
				}
				break;
			}
		}
		break;
	}
	return DefWindowProc(hWnd, Msg, wParam, lParam);
}

// WinMain


int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	MSG Msg;
	HWND MainWindow;
	WNDCLASSEX NesPC;
	ifstream RomImage;

	// Initialize our Main Window Class


	NesPC.cbSize = sizeof(WNDCLASSEX);
	NesPC.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS;
	NesPC.lpfnWndProc = MsgHandler;
	NesPC.cbClsExtra = 0;
	NesPC.cbWndExtra = 0;
	NesPC.hInstance = hInstance;
	NesPC.hIcon = LoadIcon(NULL, IDI_WINLOGO);
	NesPC.hCursor = LoadCursor(NULL, IDC_ARROW);
	NesPC.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
	NesPC.lpszMenuName = NULL;
	NesPC.lpszClassName = "NesPC";
	NesPC.hIconSm = LoadIcon(NULL, IDI_WINLOGO);

	RegisterClassEx(&NesPC);

	MainWindow = CreateWindowEx(NULL,
								"NesPC",
								"NesPC Version 0.01 Alpha",
								WS_POPUPWINDOW | WS_OVERLAPPEDWINDOW | WS_VISIBLE,
								100,
								100,
								320,
								240,
								NULL,
								NULL,
								hInstance,
								NULL);
	
	WindowInstance = hInstance;
	SetMenu(MainWindow, LoadMenu(hInstance, MAKEINTRESOURCE(NESPC)));
	ShowWindow(MainWindow, SW_SHOWNORMAL);

	while(EmulationRunning == true)
	{
		// Draw Our Emulation Screen Here

		if(GetMessage(&Msg, NULL, 0, 0))
		{
			TranslateMessage(&Msg);
			DispatchMessage(&Msg);
		}
	}
	return Msg.wParam;
}