Не могу скопировать текст из одного Edit в другой

#include <windows.h>
#include <process.h>
 
 
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 
HINSTANCE hInst;
HWND hEdit, hEdit2;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
    static char szAppName[] = {"cpp"};
 
    HWND hwnd;
    MSG msg;
    WNDCLASSEX wndclass;
 
    wndclass.cbSize = sizeof(wndclass);
    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc = WndProc;
    wndclass.cbClsExtra = 0;
    wndclass.cbWndExtra = 0;
    wndclass.hInstance = hInstance;
    wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);
    wndclass.lpszMenuName = NULL;
    wndclass.lpszClassName = L"szAppName";
    wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
 
    RegisterClassEx (&wndclass);
 
    hwnd = CreateWindow(L"szAppName", L"First in Windows",WS_OVERLAPPEDWINDOW|WS_VSCROLL, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
 
    hInst = hInstance;
 
    ShowWindow (hwnd, iCmdShow);
    UpdateWindow (hwnd);
 
 
    while (GetMessage(&msg, NULL, 0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return msg.wParam;
 
}
 
void Thread (PVOID pvoid)
{
    char Buffer[50];
    
    GetWindowTextA (hEdit,  Buffer, 50) ;
    SetWindowTextA (hEdit2, Buffer);
    for (int i = 0; i < 50; i++)
    {
        if (Buffer[i] == 'w')
        {
        MessageBoxA(NULL, "W is find!", "Message", MB_OK);
        i = 50;
        }
    }
    
    _endthread();
 
}
 
 
LRESULT CALLBACK WndProc (HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    
    HDC hdc; 
    
    
    
    
    
 
 
    switch (iMsg)
    {
    case WM_CREATE:
        
        hEdit = CreateWindow (L"edit", NULL,WS_CHILD|WS_BORDER|WS_VISIBLE, 50,50, 100, 20, hwnd, NULL, hInst, NULL);
 
        hEdit2 = CreateWindow (L"edit", NULL,WS_CHILD|WS_BORDER|WS_VISIBLE, 50,80, 100, 20, hwnd, NULL, hInst, NULL);
 
 
        _beginthread (Thread, 0, NULL);
 
        return 0;
    case WM_PAINT:
 
        
        return 0;
 
 
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
 
 
    
    }
 
    return DefWindowProc (hwnd, iMsg, wParam, lParam);
 
}

case WM_COMMAND:
  if (HIWORD(wParam) == EN_CHANGE && (HWND)lParam == hEdit) {
    int length = GetWindowTextLength(hEdit);
    if (length) {
      char *text = new char[++length];
      GetWindowTextA(hEdit, text, length);
      SetWindowTextA(hEdit2, text);
      UpdateWindow(hEdit2);}
    else SetWindowTextA(hEdit2, "");}