Question about Edit Boxes

Hey, does anyone know how to clear edits in win32?
This is what i have but its not working, its compiling fine but when i click 'Clear' nothing happens.

PHP Code:

---

HWND NAME;
HWND MESSAGE;
HWND CLEAR;

switch(&msg)
{
     case WM_CREATE:

     NAME    = CreateWindowEx(0, TEXT("EDIT"), "Username", WS_CHILD | WS_VISIBLE, 25, 140, 350, 20, hwnd, (HMENU)IDC_NAME, hInstance, NULL);

     MESSAGE = CreateWindowEx(0, TEXT("EDIT"), "Message", WS_CHILD | WS_VISIBLE | ES_MULTILINE, 25, 170, 350, 100, hwnd, (HMENU)IDC_MESSAGE, hInstance, NULL);

     CLEAR   = CreateWindowEx(0, TEXT("BUTTON"), "Clear", WS_CHILD | WS_VISIBLE | BS_FLAT, 198, 280, 175, 20, hwnd, (HMENU)IDC_CLEAR, hInstance, NULL);

     break;

     case WM_COMMAND:
       {
             switch(LOWORD(wParam))
                  {
                            case IDC_CLEAR:
                                
                                SetWindowText(NAME, TEXT(" "));
                                SetWindowText(MESSAGE, TEXT(" "));
                                
                                break;
                  }
       }
        break;
} 


---

You need to check the lParam of WM_COMMAND to ensure the msg/id is from a valid control.

nope, that didnt work :(
when i click the clear button, nothing happens

worked fine for me. Check reply to pm you sent as explicit code is given there.

i did, but it didnt work

Perhaps you could zip up and attach your code so that we could take a closer look and maybe get a better idea of what the problem is? If you want to, of course. :)

Other than that I can only suggest you also try looking for the BN_CLICKED msg coming into your WM_COMMAND handler and so cover all possibilities there.

ie in your WM_COMMAND handler:

Code:

---

if (lParam)
  {
  //must be a control, so check for btn click msg
  if (HIWORD(wParam)==BN_CLICKED)
    {
    //button must have been clicked, so check for id
    if (LOWORD(wParam)==IDC_CLEAR)
      {
      //'clear' btn clicked
      SetWindowText(NAME, TEXT(""));
      SetWindowText(MESSAGE, TEXT(""));
      }
    }
  }

---

And ensure the HWND's are static's if inside the callback.