Thread: How to fill an ellipse

Apparently its not the same as to fill a rectangle and i cant find the right function.
Thanks in advance!

Code:

#include <windows.h>
#include <winuser.h>

#define ID_TIMER    1

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

void DrawRectangle (HWND) ;
void DrawEllipse (HWND) ;
int cxClient, cyClient ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("Beeper1") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;
     
     wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc   = WndProc ;
     wndclass.cbClsExtra    = 0 ;
     wndclass.cbWndExtra    = 0 ;
     wndclass.hInstance     = hInstance ;
     wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;
     wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
     wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
     wndclass.lpszMenuName  = NULL ;
     wndclass.lpszClassName = szAppName ;
     
     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("Program requires Windows NT!"), 
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
     
     hwnd = CreateWindow (szAppName, TEXT ("Beeper1 Timer Demo"),
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          NULL, NULL, hInstance, NULL) ;
          
     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;
          
     while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     HBRUSH      hBrush ;
     HDC         hdc ;
     PAINTSTRUCT ps ;
     RECT        rc ;
     
     switch (message)
     {
     case WM_SIZE:
          cxClient = LOWORD (lParam) ;
          cyClient = HIWORD (lParam) ;
          return 0 ;
     
     case WM_CREATE:
          SetTimer (hwnd, ID_TIMER, 2000, NULL) ;
          return 0 ;

     case WM_TIMER :
          InvalidateRect (hwnd, NULL, FALSE) ;     
          return 0 ;
          
     case WM_PAINT :
          hdc = BeginPaint (hwnd, &ps) ;
          
          GetClientRect (hwnd, &rc) ;
          hBrush = CreateSolidBrush (RGB(0,0,0)) ;
          FillRect (hdc, &rc, hBrush) ;
          DrawEllipse (hwnd) ;
          EndPaint (hwnd, &ps) ;
          DeleteObject (hBrush) ;
          return 0 ;
          
     case WM_DESTROY :
          KillTimer (hwnd, ID_TIMER) ;
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}
void DrawEllipse (HWND hwnd)
{
     HBRUSH hBrush ;
     HDC    hdc = NULL;
     PAINTSTRUCT ps;
     hdc= BeginPaint(hwnd, &ps);
     
     if (cxClient == 0 || cyClient == 0)
          return ;
     
     Ellipse (hdc,rand () % cxClient, rand () % cyClient,
                     rand () % cxClient, rand () % cyClient) ;
     
     hBrush = CreateSolidBrush (RGB (rand () % 256, rand () % 256, rand () % 256)) ;
     hdc = GetDC (hwnd) ;
     
     FillEllipse (hBrush,Ellipse) ;
     ReleaseDC (hwnd, hdc) ;
     DeleteObject (hBrush) ;
}