Problem With Vc++7 And Dialog Boxes...

I'm writing a win32 app in Win API, using VC++ 7.0.

So I made my dialog box in the resource editor... and put this code in my main.cpp

Code:

---

BOOL CALLBACK MainDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam) {
        switch(Message) {
  case WM_INITDIALOG:

          return TRUE;
  case WM_COMMAND:
          switch(LOWORD(wParam)) {

    }
        }
        return TRUE;
}

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

        HICON hMyIcon = LoadIcon(hInstance, "icon1.ico");
        DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_MAIN), 0, MainDlgProc);

        while(GetMessage(&Msg, NULL, 0, 0) > 0)
        {
  TranslateMessage(&Msg);
  DispatchMessage(&Msg);
        }

        return Msg.wParam;
}

---

But the dialog box shows up with some parts transparent and just screwed up, and i cant interact with it, and I have to ctrl+alt+del to quit

Any ideas?

Thanks

Your switch syntax is wrong, need to fix it first.

Code:

---

switch (somevalue)
{
case 0:
break; (or return)

case 1:
    switch (othervalue)
    {
            case 0:
            break;

            case 1:
            break;
    }
break; (or return)

default:
break;

---

Returning true means the app has processed the msg.

All cases you return true.

Add a default handler

// for messages that we don't deal with
default:
return DefWindowProc (hwnd, message, wParam, lParam);

or

return zero to any msgs you don't process.

Quote:

---

Originally Posted by MSDN

Typically, the dialog box procedure should return TRUE if it processed the message, and FALSE if it did not. If the dialog box procedure returns FALSE, the dialog manager performs the default dialog operation in response to the message.

---

You aren't "processing" the messages that you're handling in any way. You need to return FALSE instead of TRUE.

Code:

---

BOOL CALLBACK MainDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
        switch(Message)
        {
        case WM_INITDIALOG:
                {
                        // do whatever
                        break;
                }
        case WM_COMMAND:
                {
                        switch(LOWORD(wParam))
                        {
                                case IDC_WHATEVER:
                                {
                                        // do something
                                        break;
                                }
                        }
                        // break;
                }
               
        }
        return FALSE;
}

---

Thank you! You fixed my problem

Quote:

---

// for messages that we don't deal with
default:
return DefWindowProc (hwnd, message, wParam, lParam);

---

Don't do this for Dialog boxes.