home *** CD-ROM | disk | FTP | other *** search
- /*----------------------------------------
- ENDJOIN.C -- Ends and Joins Demo
- (c) Charles Petzold, 1998
- ----------------------------------------*/
-
- #include <windows.h>
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- static TCHAR szAppName[] = TEXT ("EndJoin") ;
- 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 ("This program requires Windows NT!"),
- szAppName, MB_ICONERROR) ;
- return 0 ;
- }
-
- hwnd = CreateWindow (szAppName, TEXT ("Ends and Joins 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 iMsg, WPARAM wParam, LPARAM lParam)
- {
- static int iEnd[] = { PS_ENDCAP_ROUND, PS_ENDCAP_SQUARE, PS_ENDCAP_FLAT };
- static int iJoin[]= { PS_JOIN_ROUND, PS_JOIN_BEVEL, PS_JOIN_MITER } ;
- static int cxClient, cyClient ;
- HDC hdc ;
- int i ;
- LOGBRUSH lb ;
- PAINTSTRUCT ps ;
-
- switch (iMsg)
- {
- case WM_SIZE:
- cxClient = LOWORD (lParam) ;
- cyClient = HIWORD (lParam) ;
- return 0 ;
-
- case WM_PAINT:
- hdc = BeginPaint (hwnd, &ps) ;
-
- SetMapMode (hdc, MM_ANISOTROPIC) ;
- SetWindowExtEx (hdc, 100, 100, NULL) ;
- SetViewportExtEx (hdc, cxClient, cyClient, NULL) ;
-
- lb.lbStyle = BS_SOLID ;
- lb.lbColor = RGB (128, 128, 128) ;
- lb.lbHatch = 0 ;
-
- for (i = 0 ; i < 3 ; i++)
- {
- SelectObject (hdc,
- ExtCreatePen (PS_SOLID | PS_GEOMETRIC |
- iEnd [i] | iJoin [i], 10,
- &lb, 0, NULL)) ;
- BeginPath (hdc) ;
-
- MoveToEx (hdc, 10 + 30 * i, 25, NULL) ;
- LineTo (hdc, 20 + 30 * i, 75) ;
- LineTo (hdc, 30 + 30 * i, 25) ;
-
- EndPath (hdc) ;
- StrokePath (hdc) ;
-
- DeleteObject (
- SelectObject (hdc,
- GetStockObject (BLACK_PEN))) ;
-
- MoveToEx (hdc, 10 + 30 * i, 25, NULL) ;
- LineTo (hdc, 20 + 30 * i, 75) ;
- LineTo (hdc, 30 + 30 * i, 25) ;
- }
- EndPaint (hwnd, &ps) ;
- return 0 ;
-
- case WM_DESTROY:
- PostQuitMessage (0) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, iMsg, wParam, lParam) ;
- }
-