dialog help needed

here are all of my codes

Main.CPP

Code:

#include <windows.h>
#include "resource.h"
#include "dialog.h"

const char *ClsName = "BasicApp";
const char *WndName = "Mystical Island"; //window name

LRESULT CALLBACK WndProcedure(HWND hWnd, UINT uMsg,
			   WPARAM wParam, LPARAM lParam);

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
               LPSTR lpCmdLine, int nCmdShow) //main function of window
{
	MSG        Msg; //window messages
	HWND       hWnd; //handle of window
	WNDCLASSEX WndClsEx;  //structure of window

	// Create the application window
	WndClsEx.cbSize        = sizeof(WNDCLASSEX); //type
	WndClsEx.style         = CS_HREDRAW | CS_VREDRAW; //horizontal | vertical
	WndClsEx.lpfnWndProc   = WndProcedure; 
	WndClsEx.cbClsExtra    = 0; //none
	WndClsEx.cbWndExtra    = 0; //none
	WndClsEx.hIcon         = LoadIcon(NULL, IDI_APPLICATION); //loading icon
	WndClsEx.hCursor       = LoadCursor(NULL, IDC_ARROW); //loading cursor
	WndClsEx.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); //background color
	WndClsEx.lpszMenuName  = MAKEINTRESOURCE(IDR_MYMENU); //loading menu
	WndClsEx.lpszClassName = ClsName; //varaible class name
	WndClsEx.hInstance     = hInstance; //previous instance
	WndClsEx.hIconSm  = LoadIcon(NULL, IDI_APPLICATION);


	// Register the application
	RegisterClassEx(&WndClsEx);

	// Create the window object
	hWnd = CreateWindow(ClsName,
			  WndName,
			  WS_OVERLAPPEDWINDOW,
			  CW_USEDEFAULT,
			  CW_USEDEFAULT,
			  CW_USEDEFAULT,
			  CW_USEDEFAULT,
			  NULL,
			  NULL,
			  hInstance,
			  NULL);
	
	// Find out if the window was created
	if( !hWnd ) // If the window was not created,
		return 0; // stop the application

	// Display the window to the user
	ShowWindow(hWnd, SW_SHOWNORMAL);
	UpdateWindow(hWnd);

	// Decode and treat the messages
	// as long as the application is running
	while( GetMessage(&Msg, NULL, 0, 0) )
	{
             TranslateMessage(&Msg);
             DispatchMessage(&Msg);
	}
	return Msg.wParam;
}

LRESULT CALLBACK WndProcedure(HWND hWnd, UINT Msg,
			   WPARAM wParam, LPARAM lParam)
{
    switch(Msg)
    {  
      switch(LOWORD(wParam))
    {
        case ID_HELP_ABOUT:
        {
            int ret = DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_ABOUT), hwnd, AboutDlgProc);
            if(ret == IDOK){
                MessageBox(hwnd, "Dialog exited with IDOK.", "Notice",
                    MB_OK | MB_ICONINFORMATION);
            }
            else if(ret == IDCANCEL){
                MessageBox(hwnd, "Dialog exited with IDCANCEL.", "Notice",
                    MB_OK | MB_ICONINFORMATION);
            }
            else if(ret == -1){
                MessageBox(hwnd, "Dialog failed!", "Error",
                    MB_OK | MB_ICONINFORMATION);
            }
        }
        }
        break;            
    case WM_DESTROY:
        // then close it
        PostQuitMessage(WM_QUIT);
        break;
    default:
        // Process the left-over messages
        return DefWindowProc(hWnd, Msg, wParam, lParam);
    }
    // If something was not done, let it go
    return 0;
}

Windows1.rc

Code:

#include "resource.h"
#include "windows.h"

IDR_MYMENU MENU
BEGIN
    POPUP "&File"
    BEGIN
        MENUITEM "E&xit", 9001
    END

    POPUP "&Area"
    BEGIN
        MENUITEM "&Go", 9002
        MENUITEM "G&o somewhere else", 0, GRAYED
    END
    
    POPUP "&Battle"
    BEGIN
        MENUITEM "&Player", 9003
END
    POPUP "&Help"
    BEGIN
        MENUITEM "&About", 9004
    END
END

IDD_ABOUT DIALOG DISCARDABLE  0, 0, 239, 66
STYLE  DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "About Mystical Island"
FONT 8, "Courier New"
BEGIN
    DEFPUSHBUTTON   "&OK",IDOK,174,18,50,14
    PUSHBUTTON      "&Cancel",IDCANCEL,174,35,50,14
    GROUPBOX        "About this program...",IDC_STATIC,7,7,225,52
    CTEXT           "This is a test version of the RPG, \r\n\r\nMystical Island by  Renegade"
                    IDC_STATIC,16,18,144,33
END

dialog.h

Code:

#ifndef _DIALOG_H_
#define _DIALOG_H_
BOOL CALLBACK AboutDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
    switch(Message)
    {
        case WM_INITDIALOG:

        return TRUE;
        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case IDOK:
                    EndDialog(hwnd, IDOK);
                break;
                case IDCANCEL:
                    EndDialog(hwnd, IDCANCEL);
                break;
            }
        break;
        default:
            return FALSE;
    }
    return TRUE;
}
#endif

finally, resource.h

Code:

#ifndef _RESOURCE_H_
#define _RESOURCE_H_

#define IDR_MYMENU 101
#define ID_FILE_EXIT 9001
#define ID_AREA_GO 9002
#define ID_BATTLE_PLAYER 9003
#define ID_HELP_ABOUT 9004
#define IDC_STATIC -1
#endif

I get these errors:
main.cpp: In function `LRESULT WndProcedure(HWND__*, UINT, WPARAM, LPARAM)':
main.cpp:76: error: `IDD_ABOUT' undeclared (first use this function)
main.cpp:76: error: (Each undeclared identifier is reported only once for each function it appears in.)
main.cpp:76: error: `hwnd' undeclared (first use this function)
main.cpp:72: warning: unreachable code at beginning of switch statement

Thank you in advance, and if any1 can help through IM my AIM screen name is: MetalChansey18

You know, you could try reading your errors before you post here. I'm not trying to be rude, but really. IDD_ABOUT isn't declared, anywhere. Look through your code, it isn't there. In WndProcedure(), the argument says HWND hWnd, not hwnd. In that function, hwnd isn't declared.

Also, I don't know where everyone keeps getting PostQuitMessage(WM_QUIT), but WM_QUIT is defined to be 18. If you want your program to end, you must use PostQuitMessage(0).

OMG, read throught the code before I post here, I've been reading that code for hours, and I made it myself, after reading tutorials all day almost. The tutorial I read said nothing about defining IDD_About and please don't insult me like a downloading source code junkee, because i don't hardly even c+p from tutorial I usually type it out. Please don't say look at the code before posting because that tends to make people hostile when they been working their heart out at this stuff. Thanx for the advice if it works. Peace to ya.

I know. I'm sorry for being harsh, and I wasn't making any assumptions about you. I don't do that, cause I know what it's like. But you could have found the hwnd error. Bah, I'm criticizing you again. I apologize. I'm just used to dealing with simple errors like this. It's second nature to me.

DEFPUSHBUTTON "&OK",IDOK,174,18,50,14
PUSHBUTTON "&Cancel",IDCANCEL,174,35,50,14
GROUPBOX "About this program...",IDC_STATIC,7,7,225,52
CTEXT "This is a test version of the RPG, \r\n\r\nMystical Island by Renegade"
IDC_STATIC,16,18,144,33

when i did this it gave me improper syntax tofix it place GROUPBOX at the top and CTEXT under it