LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
 HDC hdc, mem1dc, mem2dc;
 PAINTSTRUCT ps;
 static HBITMAP hBit1, hBit2, oldBit1, oldBit2;
 static int Ypos=-10;
 static RECT rectview;
 char str[] = "움직여랏";

 switch(iMsg)
 {
 case WM_CREATE:
  SetTimer(hwnd, 1, 50, NULL);
  hBit2 = (HBITMAP) LoadBitmap( ((LPCREATESTRUCT)lParam)->hInstance, MAKEINTRESOURCE(IDB_BITMAP5_2));
  break;
 case WM_TIMER:
  switch(wParam)
  {
  case 1:
   Ypos+=5;
   if(Ypos>rectview.bottom)
    Ypos = -10;

   hdc = GetDC(hwnd);
   if(hBit1==NULL)
    hBit1 = CreateCompatibleBitmap(hdc, rectview.right, rectview.bottom);
   mem1dc = CreateCompatibleDC(hdc);
   mem2dc = CreateCompatibleDC(mem1dc);
   oldBit1 = (HBITMAP)SelectObject(mem1dc, hBit1);
   oldBit2 = (HBITMAP)SelectObject(mem2dc, hBit2);
   BitBlt(mem1dc, 0, 0, rectview.right, rectview.bottom, mem2dc, 0, 0, SRCCOPY);
   SetBkMode(mem1dc, TRANSPARENT);
   TextOut(mem1dc, 200, Ypos, str, strlen(str));
   SelectObject(mem1dc, oldBit1);
   SelectObject(mem2dc, oldBit2);
   DeleteDC(mem1dc);
   DeleteDC(mem2dc);
   ReleaseDC(hwnd, hdc);
   InvalidateRgn(hwnd, NULL, TRUE);
   break;
  }
  break;
 case WM_PAINT:
  GetClientRect(hwnd, &rectview);
  hdc = BeginPaint(hwnd, &ps);
  mem1dc = CreateCompatibleDC(hdc);
  oldBit1 = (HBITMAP)SelectObject(mem1dc, hBit1);
  BitBlt(hdc, 0, 0, rectview.right, rectview.bottom, mem1dc, 0, 0, SRCCOPY);
  SelectObject(mem1dc, oldBit1);
  DeleteDC(mem1dc);
  EndPaint(hwnd, &ps);
  break;
 case WM_DESTROY:
  KillTimer(hwnd, 1);
  if(hBit1)
   DeleteObject(hBit1);
  if(hBit2)
   DeleteObject(hBit2);
  PostQuitMessage(0);
  break;
 }
 return DefWindowProc(hwnd, iMsg, wParam, lParam);
}

그리고 궁금한게
SelectObject(mem1dc, hBit1);
TextOut(mem1dc, 200, Ypos, str, strlen(str));
요렇게 하면 hBit1에 텍스트가 출력된상태로 저장되있나요?