[Dev-C++] Help with Dialogs

[Paul H. <dra...@ne...>]

I am a beginner to 'Win32 programming' I have also been studying 'the =
forgers-win32-tutorial' and I'm stuck at the dialogs section. The =
program runs but the 'Dialog' does'nt appear, just an error saying =
'Dialog error' which appears when you return the value -1

[code] Win example3.c

#include <windows.h>
#include "Win_example3.h"
#define ID_FILE_EXIT 9001
#define ID_STUFF_GO 9002
#define ID_HELP_ABOUT 9003

const char g_szClassName[] =3D "myWindowClass";

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;
}

// Step 4: the Window Procedure
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM =
lParam)
{
switch(msg)
{
case WM_CREATE:
{
HMENU hMenu, hSubMenu;
HICON hIcon, hIconSm;

hMenu =3D CreateMenu();

hSubMenu =3D CreatePopupMenu();
AppendMenu(hSubMenu, MF_STRING, ID_FILE_EXIT, "E&xit");
AppendMenu(hMenu, MF_STRING | MF_POPUP, (UINT)hSubMenu, "&File");

hSubMenu =3D CreatePopupMenu();
AppendMenu(hSubMenu, MF_STRING, ID_STUFF_GO, "&Go");
AppendMenu(hMenu, MF_STRING | MF_POPUP, (UINT)hSubMenu, "&Stuff");

hSubMenu =3D CreatePopupMenu();
AppendMenu(hSubMenu, MF_STRING, ID_HELP_ABOUT, "&About");
AppendMenu(hMenu, MF_STRING | MF_POPUP, (UINT)hSubMenu, "&Help");

SetMenu(hwnd, hMenu);


hIcon =3D LoadImage(NULL, "Win_example.ico", IMAGE_ICON, 32, 32, =
LR_LOADFROMFILE);
if(hIcon)
SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM)hIcon);
else
MessageBox(hwnd, "Could not load large icon!", "Error", MB_OK | =
MB_ICONERROR);

hIconSm =3D LoadImage(NULL, "Win_example.ico", IMAGE_ICON, 16, 16, =
LR_LOADFROMFILE);
if(hIconSm)
SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)hIconSm);
else
MessageBox(hwnd, "Could not load small icon!", "Error", MB_OK | =
MB_ICONERROR);
}
break;
case WM_COMMAND:
{
switch(LOWORD(wParam))
{
case ID_HELP_ABOUT:
{
int ret =3D DialogBox(GetModuleHandle(NULL),=20
MAKEINTRESOURCE(IDD_ABOUT), hwnd, AboutDlgProc);
if(ret =3D=3D IDOK){
MessageBox(hwnd, "Dialog exited with IDOK.", "Notice",
MB_OK | MB_ICONINFORMATION);
}
else if(ret =3D=3D IDCANCEL){
MessageBox(hwnd, "Dialog exited with IDCANCEL.", "Notice",
MB_OK | MB_ICONINFORMATION);
}
else if(ret =3D=3D -1){
MessageBox(hwnd, "Dialog failed!", "Error",
MB_OK | MB_ICONINFORMATION);
}
}
break;
case ID_FILE_EXIT:
PostMessage(hwnd, WM_CLOSE, 0, 0);
break;
case ID_STUFF_GO:
MessageBox(hwnd, "It's working", "Go", MB_OK);
break;
}
}
break;
case WM_LBUTTONDOWN:
{
char szFileName[MAX_PATH];
HINSTANCE hInstance =3D GetModuleHandle(NULL);
GetModuleFileName(hInstance, szFileName, MAX_PATH);
MessageBox(hwnd, szFileName, "This program is:", MB_OK | =
MB_ICONINFORMATION);
}
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hwnd;
MSG Msg;

//Step 1: Registering the Window Class
wc.cbSize =3D sizeof(WNDCLASSEX);
wc.style =3D 0;
wc.lpfnWndProc =3D WndProc;
wc.cbClsExtra =3D 0;
wc.cbWndExtra =3D 0;
wc.hInstance =3D hInstance;
wc.hIcon =3D LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor =3D LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground =3D (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName =3D NULL;
wc.lpszClassName =3D g_szClassName;
wc.hIconSm =3D LoadIcon(NULL, IDI_APPLICATION);

if(!RegisterClassEx(&wc))
{
MessageBox(NULL, "Window Registration Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}

// Step 2: Creating the Window
hwnd =3D CreateWindowEx(
WS_EX_CLIENTEDGE,
g_szClassName,
"The title of my window",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 240, 120,
NULL, NULL, hInstance, NULL);

if(hwnd =3D=3D NULL)
{
MessageBox(NULL, "Window Creation Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}

ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);

// Step 3: The Message Loop
while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}

[/code]

[code] Win_example3.rc

#include <windows.h>
#include "Win_example3.h"
IDD_ABOUT DIALOG DISCARDABLE 0, 0, 239, 66
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "My About Box"
FONT 8, "MS Sans Serif"
{
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 "An example program showing how to use Dialog Boxes\r\n\r\nby =
theForger",
IDC_STATIC,16,18,144,33
}

[/code]

[code] Win_example3.h

#define IDD_ABOUT 1001

[/code]

I have followed what other people have said about it, but they did'nt =
seem to work. If you can clarify this for me or any ideas would be =
appreciated Thank You in advance!