Navigate in Windows Dialog with arrow keys

Question

I am using plain Windows API. I would like to navigate between the Textboxes of a Dialog using arrow keys VK_UP, VK_DOWN. VK_LEFT, VK_RIGHT. I have subclassed the Textboxes in order to get the WM_CHAR, and I get every keystroke, including backspace, delete, etc but no arrow keys! What am I doing wrong? Thanks for advice!

    //subclassing
SetWindowSubclass(GetDlgItem(hDlg, IDC_TEXTBOX1),TextBoxProc, IDC_TEXTBOX1,param);

with

LRESULT CALLBACK
TextBoxProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam,
             UINT_PTR Id, DWORD_PTR param)
{
    switch (msg)
    {
       case WM_CHAR:
            char c= (char)wParam;
etc
}

Answer 1

It should be WM_KEYDOWN instead of WM_CHAR

LRESULT CALLBACK TextBoxProc(
    HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, UINT_PTR, DWORD_PTR)
{
    switch (msg)
    {
    case WM_KEYDOWN:
    {
        if (wParam == VK_DOWN)
        {
            OutputDebugString(L"VK_DOWN\n");
            return TRUE;// or break!
        }
        break;
    }
    default:break;
    }

    return DefSubclassProc(hWnd, msg, wParam, lParam);
}