Не меняется текст кнопки! Pls help!

Подскажите, почему не меняется текст кнопки?

Код:

Code:

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

HINSTANCE hInst;

const char szWindow[] = "Мой компьютер";
HWND  hWnd, hwndDlg;


DWORD WINAPI WaitWindow(LPVOID)
{
    while(TRUE)
    {
        if ( FindWindow(NULL, szWindow) )
        {
            hWnd = FindWindow(NULL, szWindow);
            goto wFound;
            break;
        }
        else
            continue;
        }

        wFound:
        MessageBox(0, "found", 0, 0);
        SetDlgItemText(hwndDlg, IDC_BTN_TEST, "works");

  return 0;
}

BOOL CALLBACK DialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    int inc = 10;
    HANDLE hThread;
    DWORD IDThread;

    switch(uMsg)
    {
        case WM_INITDIALOG:
            hThread = CreateThread(NULL, 0, WaitWindow, (void*)inc, 0, &IDThread);

            return TRUE;

        case WM_CLOSE:
            EndDialog(hwndDlg, 0);
            return TRUE;

        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case IDC_BTN_QUIT:
                    EndDialog(hwndDlg, 0);
                    return TRUE;

                case IDC_BTN_TEST:
                    //MessageBox(hwndDlg, "You clicked \"Test\" button!", "Information", MB_ICONINFORMATION);
                    SetDlgItemText(hwndDlg, IDC_BTN_TEST, "works");
                    return TRUE;
            }
    }

    return FALSE;
}


int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    hInst = hInstance;

    return DialogBox(hInstance, MAKEINTRESOURCE(DLG_MAIN), NULL, (DLGPROC)DialogProc);
}