CreateWindow (for newbie)

[hencox]

Hi!

I'm trying to create an invisible window using CreateWindow(). Which is the easiest way to do this? I've had a look at the parameters of this call. I think some of them are cryptic (like lpClassName and hInstance). I've also tried calling this function, but I always get error #1407 (ERROR_CANNOT_FIND_WND_CLASS). Are there any #defines that would help me get past parameters like

lpClassName

and

hInstance

?

Thanks
Henrik

 

[OlafBogus]

lpClassName is the name of a registered windows class ie...
WNDCLASS wc;
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC) CaliWndProc;
wc.hIcon = LoadIcon(hInst,IDI_CAL);
wc.cbClsExtra = 0;
wc.cbWndExtra = DLGWINDOWEXTRA;
wc.hInstance = hinstance;
wc.hCursor = LoadCursor( NULL, IDC_ARROW );
wc.hbrBackground = (HBRUSH) COLOR_WINDOW + 1;
wc.lpszMenuName = "myMenu";
wc.lpszClassName = "myWindowClass";

/* Register the window class and return success/failure code. */

if (!RegisterClass(&wc))
return FALSE ;

hinstance is the handle to the instance of the module to be associated with the window...the first parameter of WinMain or if using MFC..the m_hInstance member of your CWinApp.

 

[hencox]

Thanks!
Are there any pre-defined registered window classes I can use, so that I won't have to fill in that entire struct?

Currently my application is a console. Maybe I need to change its type to WinMain?

Regards
Henrik

 

[OlafBogus]

yup...every window on the system has an associated registered class...combo boxed edit boxes and the like...
the predefined system ones are...as far as I remember...
COMBOBOX
EDIT
LISTBOX
MDICLIENT
RichEdit
RICHEDIT_CLASS
SCROLLBAR
STATIC
BUTTON

fix to the above...
I ripped the above from some old code...sould read...
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.lpfnWndProc = (WNDPROC) MainWndProc;
wc.hbrBackground = GetStockObject(WHITE_BRUSH);