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- /*-------------------------------------
- EMF7.C -- Enhanced Metafile Demo #7
- (c) Charles Petzold, 1998
- -------------------------------------*/
-
- #include <windows.h>
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR lpszCmdLine, int iCmdShow)
- {
- static TCHAR szAppName[] = TEXT ("EMF7") ;
- 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 = 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 ("Enhanced Metafile Demo #7"),
- 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 ;
- }
-
- int CALLBACK EnhMetaFileProc (HDC hdc, HANDLETABLE * pHandleTable,
- CONST ENHMETARECORD * pEmfRecord,
- int iHandles, LPARAM pData)
- {
- HBRUSH hBrush ;
- HPEN hPen ;
- LOGBRUSH lb ;
-
- if (pEmfRecord->iType != EMR_HEADER && pEmfRecord->iType != EMR_EOF)
-
- PlayEnhMetaFileRecord (hdc, pHandleTable, pEmfRecord, iHandles) ;
-
- if (pEmfRecord->iType == EMR_RECTANGLE)
- {
- hBrush = SelectObject (hdc, GetStockObject (NULL_BRUSH)) ;
-
- lb.lbStyle = BS_SOLID ;
- lb.lbColor = RGB (0, 255, 0) ;
- lb.lbHatch = 0 ;
-
- hPen = SelectObject (hdc,
- ExtCreatePen (PS_SOLID | PS_GEOMETRIC, 5, &lb, 0, NULL)) ;
-
- Ellipse (hdc, 100, 100, 200, 200) ;
-
- DeleteObject (SelectObject (hdc, hPen)) ;
- SelectObject (hdc, hBrush) ;
- }
- return TRUE ;
- }
-
- LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- ENHMETAHEADER emh ;
- HDC hdc, hdcEMF ;
- HENHMETAFILE hemfOld, hemf ;
- PAINTSTRUCT ps ;
- RECT rect ;
-
- switch (message)
- {
- case WM_CREATE:
-
- // Retrieve existing metafile and header
-
- hemfOld = GetEnhMetaFile (TEXT ("..\\emf3\\emf3.emf")) ;
-
- GetEnhMetaFileHeader (hemfOld, sizeof (ENHMETAHEADER), &emh) ;
-
- // Create a new metafile DC
-
- hdcEMF = CreateEnhMetaFile (NULL, TEXT ("emf7.emf"), NULL,
- TEXT ("EMF7\0EMF Demo #7\0")) ;
-
- // Enumerate the existing metafile
-
- EnumEnhMetaFile (hdcEMF, hemfOld, EnhMetaFileProc, NULL,
- (RECT *) & emh.rclBounds) ;
-
- // Clean up
-
- hemf = CloseEnhMetaFile (hdcEMF) ;
-
- DeleteEnhMetaFile (hemfOld) ;
- DeleteEnhMetaFile (hemf) ;
- return 0 ;
-
- case WM_PAINT:
- hdc = BeginPaint (hwnd, &ps) ;
-
- GetClientRect (hwnd, &rect) ;
-
- rect.left = rect.right / 4 ;
- rect.right = 3 * rect.right / 4 ;
- rect.top = rect.bottom / 4 ;
- rect.bottom = 3 * rect.bottom / 4 ;
-
- hemf = GetEnhMetaFile (TEXT ("emf7.emf")) ;
-
- PlayEnhMetaFile (hdc, hemf, &rect) ;
- DeleteEnhMetaFile (hemf) ;
- EndPaint (hwnd, &ps) ;
- return 0 ;
-
- case WM_DESTROY:
- PostQuitMessage (0) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, message, wParam, lParam) ;
- }
-