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Diffstat (limited to 'doc/src/declarative/qdeclarativedebugging.qdoc')
| -rw-r--r-- | doc/src/declarative/qdeclarativedebugging.qdoc | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/doc/src/declarative/qdeclarativedebugging.qdoc b/doc/src/declarative/qdeclarativedebugging.qdoc index 4ff7fdebdb..99dd2d2887 100644 --- a/doc/src/declarative/qdeclarativedebugging.qdoc +++ b/doc/src/declarative/qdeclarativedebugging.qdoc @@ -60,8 +60,35 @@ Rectangle { \section1 Debugging Transitions When a transition doesn't look quite right, it can be helpful to view it in slow -motion to see what is happening more clearly. The \l {Qt Declarative UI Runtime}{qml} tool provides a -"Slow Down Animations" menu option to facilitate this. +motion to see what is happening more clearly. This functionality is supported +in the \l {Qt Declarative UI Runtime}{qmlviewer} tool: to enable this, +click on the "Debugging" menu, then "Slow Down Animations". + + +\section1 Debugging module imports + +The \c QML_IMPORT_TRACE environment variable can be set to enable debug output +from QML's import loading mechanisms. + +For example, for a simple QML file like this: + +\qml +import Qt 4.7 + +Rectangle { width: 100; height: 100 } +\endqml + +If you set \c {QML_IMPORT_TRACE=1} before running the \l {Qt Declarative UI Runtime}{qmlviewer} +(or your QML C++ application), you will see output similar to this: + +\code +QDeclarativeImportDatabase::addImportPath "/qt-sdk/imports" +QDeclarativeImportDatabase::addImportPath "/qt-sdk/bin/QMLViewer.app/Contents/MacOS" +QDeclarativeImportDatabase::addToImport 0x106237370 "." -1.-1 File as "" +QDeclarativeImportDatabase::addToImport 0x106237370 "Qt" 4.7 Library as "" +QDeclarativeImportDatabase::resolveType "Rectangle" = "QDeclarativeRectangle" +\endcode + \section1 Debugging with Qt Creator |