Loading bitmap image in c++ thread - c++

Question

I am attempting to load in a selected .bmp file and display it in WM_PAINT. The function is being ran by the code so visual studio does see it.
here is the code that seems to be not working:
case WM_PAINT:
{
_hWindowDC = BeginPaint(_hwnd, &ps);
if (g_bIsFileLoaded)
{
std::wstring wsFileName = g_vecImageFileNames.back();
g_vecImageFileNames.pop_back();
std::string File(wsFileName.length(), ' ');
std::copy(wsFileName.begin(), wsFileName.end(), File.begin());
HBITMAP h_BitMap = (HBITMAP)LoadImageA(g_hInstance, File.c_str(), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
HDC h_HomeDC = CreateCompatibleDC(_hWindowDC);
BITMAP BitMap;
int i_Final = GetObject(reinterpret_cast<HGDIOBJ>(h_BitMap), sizeof(BITMAP), reinterpret_cast<LPVOID>(&BitMap));
HBITMAP h_OldBit = (HBITMAP)::SelectObject(h_HomeDC, h_BitMap);
SetStretchBltMode(_hWindowDC, HALFTONE);
BOOL PaintBit = StretchBlt(_hWindowDC, 1, 1, 50, 50, h_HomeDC, 0, 0, BitMap.bmWidth, BitMap.bmHeight, SRCCOPY);
::SelectObject(h_HomeDC, h_OldBit);
::DeleteDC(h_HomeDC);
::DeleteObject(h_BitMap);
InvalidateRect(_hwnd, NULL, NULL);
g_bIsFileLoaded = false;
}
EndPaint(_hwnd, &ps);
return (0);
}
break;