qt5base-lts/examples/widgets/graphicsview
Craig Scott d97fd7af2b Build examples in isolated sub-builds using ExternalProject
Examples are intended to show how to build against an installed Qt.
Building them as part of the main build means the way the Qt targets
are defined and created are not representative of an end user's build.
By building them as separate projects using ExternalProject, we can
more closely replicate the intended audience's environment. This
should allow us to catch more problems earlier.

Having examples built as part of the main build also creates problems
with some static builds where a tool built by the main build is needed
during configure time. This happens with other repos like qtdeclarative
but not (currently) with qtbase. Converting the examples in qtbase to
be built using ExternalProject is intended as a demonstrator for how
other repos can do similar. Until other repos are converted, they will
continue to work as they did before, with examples as part of the main
build for non-static builds only.

The new build-externally behavior is only supported for non-prefix
builds with this change. Prefix builds will continue to use the old
non-external method. Support for building examples externally in
prefix builds will be a separate change.

Task-number: QTBUG-90820
Fixes: QTBUG-91068
Change-Id: I2304329940568dbdb7da18d54d5595ea7d8668bc
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-05-26 13:33:29 +02:00
..
anchorlayout CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
basicgraphicslayouts CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
chip CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
collidingmice CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
diagramscene CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
dragdroprobot CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
elasticnodes CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
embeddeddialogs CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
flowlayout CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
simpleanchorlayout CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
weatheranchorlayout CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
CMakeLists.txt Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
graphicsview.pro Move QStateMachine from QtCore to QtScxml 2020-08-24 20:10:25 +02:00
README Moving .qdoc files under examples/widgets/doc 2012-08-20 12:20:55 +02:00

Qt is provided with a comprehensive canvas through the GraphicsView
classes.

These examples demonstrate the fundamental aspects of canvas programming
with Qt.


Documentation for these examples can be found via the Examples
link in the main Qt documentation.