home *** CD-ROM | disk | FTP | other *** search
- /*---------------------------------------
- PRINT4.C -- Printing with Banding
- (c) Charles Petzold, 1996
- ---------------------------------------*/
-
- #include <windows.h>
-
- HDC GetPrinterDC (void) ; // in PRINT.C
- void PageGDICalls (HDC, int, int) ;
-
- HINSTANCE hInst ;
- char szAppName[] = "Print4" ;
- char szCaption[] = "Print Program 4 (Banding)" ;
-
- BOOL bUserAbort ;
- HWND hDlgPrint ;
-
- BOOL CALLBACK PrintDlgProc (HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam)
- {
- switch (msg)
- {
- case WM_INITDIALOG :
- SetWindowText (hDlg, szAppName) ;
- EnableMenuItem (GetSystemMenu (hDlg, FALSE), SC_CLOSE,
- MF_GRAYED) ;
- return TRUE ;
-
- case WM_COMMAND :
- bUserAbort = TRUE ;
- EnableWindow (GetParent (hDlg), TRUE) ;
- DestroyWindow (hDlg) ;
- hDlgPrint = 0 ;
- return TRUE ;
- }
- return FALSE ;
- }
-
- BOOL CALLBACK AbortProc (HDC hdcPrn, int iCode)
- {
- MSG msg ;
-
- while (!bUserAbort && PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
- {
- if (!hDlgPrint || !IsDialogMessage (hDlgPrint, &msg))
- {
- TranslateMessage (&msg) ;
- DispatchMessage (&msg) ;
- }
- }
- return !bUserAbort ;
- }
-
- BOOL PrintMyPage (HWND hwnd)
- {
- static DOCINFO di = { sizeof (DOCINFO), "Print4: Printing", NULL } ;
- BOOL bError = FALSE ;
- HDC hdcPrn ;
- RECT rect ;
- int xPage, yPage ;
-
- if (NULL == (hdcPrn = GetPrinterDC ()))
- return TRUE ;
-
- xPage = GetDeviceCaps (hdcPrn, HORZRES) ;
- yPage = GetDeviceCaps (hdcPrn, VERTRES) ;
-
- EnableWindow (hwnd, FALSE) ;
-
- bUserAbort = FALSE ;
- hDlgPrint = CreateDialog (hInst, "PrintDlgBox", hwnd, PrintDlgProc) ;
-
- SetAbortProc (hdcPrn, AbortProc) ;
-
- if (StartDoc (hdcPrn, &di) > 0 && StartPage (hdcPrn) > 0 &&
- ExtEscape (hdcPrn, NEXTBAND, 0, NULL, sizeof (rect), (LPSTR) &rect) > 0)
- {
- while (!IsRectEmpty (&rect) && !bUserAbort)
- {
- Rectangle (hdcPrn, rect.left, rect.top, rect.right,
- rect.bottom) ;
- PageGDICalls (hdcPrn, xPage, yPage) ;
-
- if (ExtEscape (hdcPrn, NEXTBAND, 0, NULL, sizeof (rect),
- (LPSTR) &rect) < 0)
- {
- bError = TRUE ; // If error, set flag and
- break ; // break out of loop
- }
- }
- }
- else
- bError = TRUE ;
-
- if (!bError)
- {
- if (bUserAbort)
- AbortDoc (hdcPrn) ;
- else
- if (EndPage (hdcPrn))
- EndDoc (hdcPrn) ;
- }
-
- if (!bUserAbort)
- {
- EnableWindow (hwnd, TRUE) ;
- DestroyWindow (hDlgPrint) ;
- }
-
- DeleteDC (hdcPrn) ;
-
- return bError || bUserAbort ;
- }
-