diff options
Diffstat (limited to 'examples/webenginewidgets/printme/doc/src/printme.qdoc')
| -rw-r--r-- | examples/webenginewidgets/printme/doc/src/printme.qdoc | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/examples/webenginewidgets/printme/doc/src/printme.qdoc b/examples/webenginewidgets/printme/doc/src/printme.qdoc index 1ba37d0c3..f17fae1a8 100644 --- a/examples/webenginewidgets/printme/doc/src/printme.qdoc +++ b/examples/webenginewidgets/printme/doc/src/printme.qdoc @@ -66,8 +66,8 @@ \section1 Print Handler - In the \c{PrintHandler} function, we first implement \c{printPreview()}, - where we instantiate \l{QPrinter} together with \l{QPrintPreviewDialog}. + In the \c{PrintHandler} class, we first implement \c{printPreview()}, + where we instantiate \l{QPrintPreviewDialog}. We need the \l{QPrintPreviewDialog::paintRequested} handle to generate a set of preview pages. @@ -77,16 +77,23 @@ Now we can implement the \c{PrintHandler::printDocument()} slot, which is called in response to the \l{QPrintPreviewDialog::paintRequested} signal. + To do actual painting on a printer, we call the \l QWebEngineView::print() + function. Because this call is asynchronous, we need to use + a local event loop. We begin the local event loop by calling + \l{QEventLoop::exec()}. \quotefromfile webenginewidgets/printme/printhandler.cpp \skipto PrintHandler::printDocument( \printuntil /^\}/ - To do actual painting on a printer, we call the \l QWebEngineView::print() - function. Because this call blocks the main event loop, we need to create - a local one. We begin the local event loop by calling - \l{QEventLoop::exec()}. When the local event loop terminates, - we check for \c{result} and report any errors that occurred. + To get notified about the result of printing job, we implement + \c{PrintHandler::printFinished()} slot as handler of + \l QWebEngineView::printFinished() signal. We check for \c{success} and + report any errors that occurred. + + \quotefromfile webenginewidgets/printme/printhandler.cpp + \skipto PrintHandler::printFinished( + \printuntil /^\}/ The last function we implement, \c{PrintHandler::print()}, is trivial, because it simply opens \l{QPrintDialog} and calls the previously |