diff options
| -rw-r--r-- | src/webenginewidgets/api/qwebenginepage.cpp | 9 | ||||
| -rw-r--r-- | src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc | 16 | ||||
| -rw-r--r-- | src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc | 4 |
3 files changed, 29 insertions, 0 deletions
diff --git a/src/webenginewidgets/api/qwebenginepage.cpp b/src/webenginewidgets/api/qwebenginepage.cpp index 5da39e814..67f3d7a76 100644 --- a/src/webenginewidgets/api/qwebenginepage.cpp +++ b/src/webenginewidgets/api/qwebenginepage.cpp @@ -2406,6 +2406,10 @@ void QWebEnginePage::printToPdf(const QString &filePath, const QPageLayout &page The \a resultCallback must take a const reference to a QByteArray as parameter. If printing was successful, this byte array will contain the PDF data, otherwise, the byte array will be empty. + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + \since 5.7 */ void QWebEnginePage::printToPdf(const QWebEngineCallback<const QByteArray&> &resultCallback, const QPageLayout &pageLayout) @@ -2441,6 +2445,11 @@ void QWebEnginePage::printToPdf(const QWebEngineCallback<const QByteArray&> &res The \a resultCallback must take a boolean as parameter. If printing was successful, this boolean will have the value \c true, otherwise, its value will be \c false. + + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + \since 5.8 */ void QWebEnginePage::print(QPrinter *printer, const QWebEngineCallback<bool> &resultCallback) diff --git a/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc b/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc index d012c678c..035b45a6d 100644 --- a/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc +++ b/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc @@ -485,6 +485,10 @@ The \a resultCallback must take a boolean parameter. It will be called with a value of \c true if the \a subString was found; otherwise the callback value will be \c false. + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + For example: \snippet qtwebengine_qwebenginepage_snippet.cpp 0 */ @@ -613,6 +617,10 @@ \note \a resultCallback can be any of a function pointer, a functor or a lambda, and it is expected to take a QString parameter. + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + \sa setHtml(), toPlainText() */ @@ -624,6 +632,10 @@ \note \a resultCallback can be any of a function pointer, a functor or a lambda, and it is expected to take a QString parameter. + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + \sa toHtml() */ @@ -743,6 +755,10 @@ \warning Do not execute lengthy routines in the callback function, because it might block the rendering of the web engine page. + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + See scripts() for an alternative API to inject scripts. \sa QWebEngineScript::ScriptWorldId diff --git a/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc b/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc index 09346a446..501959ab9 100644 --- a/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc +++ b/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc @@ -252,6 +252,10 @@ \a resultCallback must take a boolean parameter. It will be called with a value of \c true if \a subString was found; otherwise the callback value will be \c false. + \warning We guarantee that the callback (\a resultCallback) is always called, but it might be done + during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid + value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it. + \sa selectedText(), selectionChanged() */ |