Window creation in C++

[vc185002]

can we create a window without using-->

int APIENTRY WinMain(HINSTANCE hinstance,
HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdshow)

right now i m creating a window using CreateWindow(,,,,) but in this we hav to pass a register class which takes the HINSTANSE of the WinMian function.
I want to know if we can create a window without using this as i have to work on C++ not on Win32 ie

void main (void)
{
//here i want to create a window
}

Virender