Create a window with the correct display of the title?

Question

C++ / C#

if (!(hwnd = CreateWindowEx(dwexstyle, reinterpret_cast<LPCWSTR>("My Window"), reinterpret_cast<LPCWSTR>(title), WS_CLIPSIBLINGS | WS_CLIPCHILDREN | dwstyle, 0, 0, windowrect->right - windowrect->left+menuwidth, windowrect->bottom - windowrect->top + menuheight, 0, 0, hinstance, 0)))

Let me explain, the name title is used for the title of the window char *title
What's the catch?