FillWindow Function

Im too lazy to fill in these parameters over and over when I always make them the same thing. So I made this function which gets a lot of errors.

Code:

---

int FillWindow(WNDCLASSEX *wcl, LRESULT CALLBACK WndProc)
{
        wcl.cbSize = sizeof(WNDCLASSEX);

        wcl.hInstance = GetModuleHandle(NULL);

        wcl.lpszClassName = "classname";

        wcl.lpfnWndProc = WndProc;

        wcl.style = 0;

        wcl.hIcon = LoadIcon(NULL, IDI_APPLICATION);

        wcl.hIconSm = LoadIcon(NULL, IDI_WINLOGO);

        wcl.hCursor = LoadCursor(NULL, IDC_ARROW);

        wcl.lpszMenuName = NULL;

        wcl.cbClsExtra = 0;

        wcl.cbWndExtra = 0;

        wcl.hbrBackground = (HBRUSH) GetStockObject(0);

        return 0;

}

---

error C2228: left of '.cbSize' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(22) : error C2228: left of '.hInstance' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(24) : error C2228: left of '.lpszClassName' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(26) : error C2228: left of '.lpfnWndProc' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(28) : error C2228: left of '.style' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(30) : error C2228: left of '.hIcon' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(32) : error C2228: left of '.hIconSm' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(34) : error C2228: left of '.hCursor' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(36) : error C2228: left of '.lpszMenuName' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(38) : error C2228: left of '.cbClsExtra' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(40) : error C2228: left of '.cbWndExtra' must have class/struct/union type
c:\program files\microsoft visual studio\vc98\include\mywindows.h(42) : error C2228: left of '.hbrBackground' must have class/struct/union type

You want to either use a reference (if C++), in which case pass it as WNDCLASSEX &wcl, or if it's C, you have to dereference the pointer as wcl->cbSize = sizeof(...) using the -> operator rather than the . operator.